=================================================================== RCS file: /home/cvs/OpenXM_contrib/gnuplot/Attic/0FAQ,v retrieving revision 1.1.1.2 retrieving revision 1.1.1.3 diff -u -p -r1.1.1.2 -r1.1.1.3 --- OpenXM_contrib/gnuplot/Attic/0FAQ 2000/01/22 14:15:46 1.1.1.2 +++ OpenXM_contrib/gnuplot/Attic/0FAQ 2003/09/15 07:09:21 1.1.1.3 @@ -1,179 +1,188 @@ -[next] [up] [previous] + Gnuplot FAQ + - Gnuplot FAQ - Contents - * Contents - * Meta - Questions - o 0.1 Where do I get this document? - o 0.2 Where do I send comments about this document? - * 1. General Information - o 1.1 What is gnuplot? - o 1.2 How did it come about and why is it called gnuplot? - o 1.3 Does gnuplot have anything to do with the FSF and the GNU - project? - o 1.4 What does gnuplot offer? - o 1.5 Is gnuplot suitable for batch processing? - o 1.6 Can I run gnuplot on my computer? - o 1.7 Legalize it! - o 1.8 Is gnuplot Y2K compliant? - o 1.9 Where do I get further information? - * 2. Setting it up - o 2.1 What is the current version of gnuplot? - o 2.2 Where can I get gnuplot? - o 2.3 How do I get gnuplot to compile on my system? - o 2.4 What documentation is there, and how do I get it? - * 3. Working with it. - o 3.1 How do I get help? - o 3.2 How do I print out my graphs? - o 3.3 How do I include my graphs in ? - o 3.4 How do I post-process a gnuplot graph? - o 3.5 How do I change symbol size, line thickness and the like? - o 3.6 How do I generate plots in the GIF format? - o 3.7 Can I animate my graphs? - o 3.8 How do I plot implicit defined graphs? - * 4. Wanted features - o 4.1 What's new in gnuplot 3.7? - o 4.2 Does gnuplot have hidden line removal? - o 4.3 Does gnuplot support bar-charts/histograms/boxes? - o 4.4 Does gnuplot support pie charts? - o 4.5 Does gnuplot quarterly time charts? - o 4.6 Does gnuplot support multiple y-axes on a single plot? - o 4.7 Can I put multiple pages on one page? - o 4.8 Can I put both data files and commands into a single file? - o 4.9 Can I put Greek letters and super/subscripts into my labels? - o 4.10 Can I do 1:1 scaling of axes? - o 4.11 Can I put tic marks for x and y axes into 3d plots? - o 4.12 Does gnuplot support a driver for ? - o 4.13 Can I put different text sizes into my plots? - o 4.14 How do I modify gnuplot, and apply 'patches'? - o 4.15 How do I skip data points? - o 4.16 How do I plot every nth point? - o 4.17 How do I plot a vertical line? - * 5. Miscellaneous - o 5.1 I've found a bug, what do I do? - o 5.2 Can I use gnuplotroutines for my own programs? - o 5.3 What extensions have people made to gnuplot? Where can I get - them? - o 5.4 Can I do heavy-duty data processing with gnuplot? - o 5.5 I have ported gnuplotto another system, or patched it. What do - I do? - o 5.6 I want to help in developing the next version of gnuplot. What - can I do? - * 6. Making life easier - o 6.1 How do I plot two functions in non-overlapping regions? - o 6.2 How do I run my data through a filter before plotting? - o 6.3 How do I make it easier to use gnuplot with LATEX? - o 6.4 How do I save and restore my settings? - o 6.5 How do I plot lines (not grids) using splot? - o 6.6 How do I plot a function f(x,y) which is bounded by other - functions in the x-y plain? - o 6.7 How do I get rid of ? - o 6.8 How do I call gnuplot from my own programs? - o 6.9 What if I need h-bar (Planck's constant)? - * 7. Known Problems - o 7.1 Gnuplot is not plotting any points under X11! How come? - o 7.2 My isoline data generated by a Fortran program is not handled - correctly. What can I do? - o 7.3 Why does gnuplot ignore my very small numbers? - o 7.4 Gnuplot is plotting nothing when run via gnuplot ! - What can I do? - o 7.5 My formulas are giving me nonsense results! What's going on? - o 7.6 Set output 'filename' isn't outputting everything it should! - o 7.7 When using the LATEX-terminal, there is an error during the - LATEX-run! - o 7.8 The exit command does not work as documented! - o 7.9 I can't find the demos and example files at the URLs in the - documentation! - o 7.10 Calling gnuplot in a pipe or with a gnuplot-script doesn't - produce aplot! - * 8. Credits + * 0 Meta - Questions + + 0.1 Where do I get this document? + + 0.2 Where do I send comments about this document? + + * 1 General Information + + 1.1 What is gnuplot? + + 1.2 How did it come about and why is it called gnuplot? + + 1.3 Does gnuplot have anything to do with the FSF and the GNU project? + + 1.4 What does gnuplot offer? + + 1.5 Is gnuplot suitable for batch processing? + + 1.6 Can I run gnuplot on my computer? + + 1.7 Legalize it! + + 1.8 Is gnuplot Y2K compliant? + + 1.9 Where do I get further information? + + * 2 Setting it up + + 2.1 What is the current version of gnuplot? + + 2.2 Where can I get gnuplot? + + 2.3 How do I get gnuplot to compile on my system? + + 2.4 What documentation is there, and how do I get it? + + * 3 Working with it. + + 3.1 How do I get help? + + 3.2 How do I print out my graphs? + + 3.3 How do I include my graphs in ? + + 3.4 How do I post-process a gnuplot graph? + + 3.5 How do I change symbol size, line thickness and the like? + + 3.6 How do I generate plots in the GIF format? + + 3.7 Can I animate my graphs? + + 3.8 How do I plot implicit defined graphs? + + * 4 Wanted features + + 4.1 What's new in gnuplot 3.7? + + 4.2 Does gnuplot have hidden line removal? + + 4.3 Does gnuplot support bar-charts/histograms/boxes? + + 4.4 Does gnuplot support pie charts? + + 4.5 Does gnuplot quarterly time charts? + + 4.6 Does gnuplot support multiple y-axes on a single plot? + + 4.7 Can I put multiple pages on one page? + + 4.8 Can I put both data files and commands into a single file? + + 4.9 Can I put Greek letters and super/subscripts into my labels? + + 4.10 Can I do 1:1 scaling of axes? + + 4.11 Can I put tic marks for x and y axes into 3d plots? + + 4.12 Does gnuplot support a driver for ? + + 4.13 Can I put different text sizes into my plots? + + 4.14 How do I modify gnuplot, and apply 'patches'? + + 4.15 How do I skip data points? + + 4.16 How do I plot every nth point? + + 4.17 How do I plot a vertical line? + + 4.18 How do I plot data files + + 4.19 How do I include accentuated characters in Postscript output? + + * 5 Miscellaneous + + 5.1 I've found a bug, what do I do? + + 5.2 Can I use gnuplot routines for my own programs? + + 5.3 What extensions have people made to gnuplot? Where can I get them? + + 5.4 I need an integration, fft, iir-filter,....! + + 5.5 Can I do heavy-duty data processing with gnuplot? or What is beyond + gnuplot? + + 5.6 I have ported gnuplot to another system, or patched it. What do I + do? + + 5.7 I want to help in developing the next version of gnuplot. What can + I do? + + 5.8 Open questions for inclusion into the FAQ? + + * 6 Making life easier + + 6.1 How do I plot two functions in non-overlapping regions? + + 6.2 How do I run my data through a filter before plotting? + + 6.3 How do I make it easier to use gnuplot with LATEX? + + 6.4 How do I save and restore my settings? + + 6.5 How do I plot lines (not grids) using splot? + + 6.6 How do I plot a function f(x,y) which is bounded by other functions + in the x-y plain? + + 6.7 How do I get rid of in a plot? + + 6.8 How do I call gnuplot from my own programs? + + 6.9 What if I need h-bar (Planck's constant)? + + * 7 Known Problems + + 7.1 Gnuplot is not plotting any points under X11! How come? + + 7.2 My isoline data generated by a Fortran program is not handled + correctly. What can I do? + + 7.3 Why does gnuplot ignore my very small numbers? + + 7.4 Gnuplot is plotting nothing when run via gnuplot ! What + can I do? + + 7.5 My formulas are giving me nonsense results! What's going on? + + 7.6 Set output 'filename' isn't outputting everything it should! + + 7.7 When using the LATEX-terminal, there is an error during the + LATEX-run! + + 7.8 The exit command does not work as documented! + + 7.9 I can't find the demos and example files at the URLs in the + documentation! + + 7.10 Calling gnuplot in a pipe or with a gnuplot-script doesn't produce + a plot! + + * 8 Credits -Meta - Questions +0 Meta - Questions 0.1 Where do I get this document? -This document is posted about once every two weeks to the newsgroups -comp.graphics.apps.gnuplot . Its newest (plaintext) version is available via -anonymous ftp from ftp.ucc.ie in /pub/gnuplot/faq/gnuplot-faq.txt . +This document is posted about once every two weeks to the newsgroups ~ +comp.graphics.apps.gnuplot. Its newest (plaintext) version is available via +anonymous ftp from ftp.gnuplot.info in /pub/gnuplot/faq/gnuplot-faq.txt. -If you have access to the WWW, you can get the newest version of this -document from ~http://www.ucc.ie/gnuplot/gnuplot-faq.html . +If you have access to the WWW, you can get the newest version of this document +from http://www.ucc.ie/gnuplot/gnuplot-faq.html. -Today's version is version Revision: 1.4, dated Date: 99/10/07 09:37:56 +Today's version is version $Revision: 1.1.1.3 $, dated 2002/12/07 18:33: +30 $ 0.2 Where do I send comments about this document? -Send comments, suggestions etc via email to the developer newsgroup -info-gnuplot-beta@Dartmouth.EDU and additionally to j.vonhagen@web.de . +Send comments, suggestions etc via email to the developer mailing list +info-gnuplot-beta@Dartmouth.EDU. -1. General Information +1 General Information 1.1 What is gnuplot? gnuplot is a command-driven interactive function plotting program. It can be -used to plot functions and data points in both two- and three-dimensional -plots in many different formats, and will accommodate many of the needs of -today's scientists for graphic data representation. gnuplot is copyrighted, -but freely distributable; you don't have to pay for it. +used to plot functions and data points in both two- and three-dimensional plots +in many different formats, and will accommodate many of the needs of today's +scientists for graphic data representation. gnuplot is copyrighted, but freely +distributable; you don't have to pay for it. This document deals with gnuplot Version 3.7 which is the latest official -release as of October 20, 1999. References to bug-fix versions or (recent) +release as of December 10, 2002. References to bug-fix versions or (recent) beta versions are explicitly marked. 1.2 How did it come about and why is it called gnuplot? -The authors of gnuplot are: Thomas Williams, Colin Kelley, Russell Lang, -Dave Kotz, John Campbell, Gershon Elber, Alexander Woo and many others. +The authors of gnuplot are: Thomas Williams, Colin Kelley, Russell Lang, Dave +Kotz, John Campbell, Gershon Elber, Alexander Woo and many others. The following quote comes from Thomas Williams: - I was taking a differential equation class and Colin was taking - Electromagnetics, we both thought it'd be helpful to visualize the - mathematics behind them. We were both working as sys admin for an - EE VLSI lab, so we had the graphics terminals and the time to do - some coding. The posting was better received than we expected, and - prompted us to add some, albeit lame, support for file data. + I was taking a differential equation class and Colin was taking + Electromagnetics, we both thought it'd be helpful to visualize the + mathematics behind them. We were both working as sys admin for an EE VLSI + lab, so we had the graphics terminals and the time to do some coding. The + posting was better received than we expected, and prompted us to add some, + albeit lame, support for file data. - Any reference to GNUplot is incorrect. The real name of the - program is "gnuplot". You see people use "gnuplot" quite a bit - because many of us have an aversion to starting a sentence with a - lower case letter, even in the case of proper nouns and titles. - gnuplot is not related to the GNU project or the FSF in any but - the most peripheral sense. Our software was designed completely - independently and the name "gnuplot" was actually a compromise. I - wanted to call it "llamaplot" and Colin wanted to call it "nplot." - We agreed that "newplot" was acceptable but, we then discovered - that there was an absolutely ghastly pascal program of that name - that the Computer Science Dept. occasionally used. I decided that - "gnuplot" would make a nice pun and after a fashion Colin agreed. + Any reference to GNUplot is incorrect. The real name of the program is + "gnuplot". You see people use "gnuplot" quite a bit because many of us have + an aversion to starting a sentence with a lower case letter, even in the + case of proper nouns and titles. gnuplot is not related to the GNU project + or the FSF in any but the most peripheral sense. Our software was designed + completely independently and the name "gnuplot" was actually a compromise. + I wanted to call it "llamaplot" and Colin wanted to call it "nplot." We + agreed that "newplot" was acceptable but, we then discovered that there was + an absolutely ghastly pascal program of that name that the Computer Science + Dept. occasionally used. I decided that "gnuplot" would make a nice pun and + after a fashion Colin agreed. 1.3 Does gnuplot have anything to do with the FSF and the GNU project? -Gnuplot is neither written nor maintained by the FSF. It is not covered by -the General Public License, either. It used to be distributed by the FSF, -however, due to licensing issues it is no longer. +Gnuplot is neither written nor maintained by the FSF. It is not covered by the +General Public License, either. It used to be distributed by the FSF, however, +due to licensing issues it is no longer. -Gnuplot is freeware in the sense that you don't have to pay for it. However -it is not freeware in the sense that you would be allowed to distribute a -modified version of your gnuplot freely. Please read and accept the -Copyright file in your distribution. +Gnuplot is freeware in the sense that you don't have to pay for it. However it +is not freeware in the sense that you would be allowed to distribute a modified +version of your gnuplot freely. Please read and accept the Copyright file in +your distribution. 1.4 What does gnuplot offer? - * Plotting of two-dimensional functions and data points in many different - styles (points, lines, error bars) - * computations in integer, float and complex arithmetic - * plotting of three-dimensional data points and surfaces in many - different styles (contour plot, mesh). - * support for complex arithmetic - * self - defined functions - * support for a large number of operating systems, graphics file formats - and devices - * extensive on-line help - * labels for title, axes, data points - * command line editing and history on most platforms + * Plotting of two-dimensional functions and data points in many different + styles (points, lines, error bars) + * computations in integer, float and complex arithmetic + * plotting of three-dimensional data points and surfaces in many different + styles (contour plot, mesh). + * support for complex arithmetic + * self - defined functions + * support for a large number of operating systems, graphics file formats and + devices + * extensive on-line help + * labels for title, axes, data points + * command line editing and history on most platforms 1.5 Is gnuplot suitable for batch processing? @@ -185,46 +194,45 @@ use. 1.6 Can I run gnuplot on my computer? Gnuplot is available for a number of platforms. These are: Unix (X11 and -NeXTSTEP), VAX/VMS, OS/2, MS-DOS, Amiga, MS-Windows, OS-9/68k, Atari ST, -BeOS, and the Macintosh. +NeXTSTEP), VAX/VMS, OS/2, MS-DOS, Amiga, MS-Windows, OS-9/68k, Atari ST, BeOS, +and the Macintosh. Please notify the FAQ-maintainer of any further ports you might be aware of. -You should be able to compile the gnuplot source more or less out of the box -on any reasonable standard (ANSI/ISO C, POSIX) environment. +You should be able to compile the gnuplot source more or less out of the box on +any reasonable standard (ANSI/ISO C, POSIX) environment. 1.7 Legalize it! -Gnuplot is freeware authored by a collection of volunteers, who cannot make -any legal statement about the compliance or non-compliance of gnuplot or its -uses. There is also no warranty whatsoever. Use at your own risk. +Gnuplot is freeware authored by a collection of volunteers, who cannot make any +legal statement about the compliance or non-compliance of gnuplot or its uses. +There is also no warranty whatsoever. Use at your own risk. Citing from the README of a mathematical subroutine package by R. Freund: - For all intent and purpose, any description of what the codes are - doing should be construed as being a note of what we thought the - codes did on our machine on a particular Tuesday of last year. If - you're really lucky, they might do the same for you someday. Then - again, do you really feel *that* lucky? + For all intent and purpose, any description of what the codes are doing + should be construed as being a note of what we thought the codes did on our + machine on a particular Tuesday of last year. If you're really lucky, they + might do the same for you someday. Then again, do you really feel *that* + lucky? 1.8 Is gnuplot Y2K compliant? Gnuplot's compliance depends in part on the compliance of the underlying -operating system and hardware. The only use gnuplot makes of a system- -supplied date is in the "set timestamp" command, which simply echos the date -on the plot. If the underlying OS cannot produce an accurate time string, -then the "set timestamp" command may fail to print the correct date on -plots. +operating system and hardware. The only use gnuplot makes of a system- supplied +date is in the "set timestamp" command, which simply echos the date on the +plot. If the underlying OS cannot produce an accurate time string, then the +"set timestamp" command may fail to print the correct date on plots. In gnuplot 3.5, if the user chooses to use %y in a timestamp format, rather -than %Y, it will print 2-digit rather than 4-digit years. The effects depend -on the importance you place on the timestamps printed on plots. +than %Y, it will print 2-digit rather than 4-digit years. The effects depend on +the importance you place on the timestamps printed on plots. -Gnuplot3.7 also allows the use of time/date data as variables, but the user -has complete control over the input format of the data and the output format -of the tic labels - the same 2-digit "%y" (interpreted as 1900+) and 4-digit -"%Y" formats are both available. But again, these are user-specifiable, so -if there is a Y2K problem here, it is the responsibility of the user. +Gnuplot 3.7 also allows the use of time/date data as variables, but the user +has complete control over the input format of the data and the output format of +the tic labels - the same 2-digit "%y" (interpreted as 1900+) and 4-digit "%Y" +formats are both available. But again, these are user-specifiable, so if there +is a Y2K problem here, it is the responsibility of the user. Of course, gnuplot is built by executing a makefile, which may well be date-dependent. So if the operating system has a Y2K problem, the process of @@ -234,67 +242,64 @@ problem with gnuplot per se. IMPORTANT NOTICE As of gnuplot beta version 3.7.0.9, the interpretation of the "%y" two digit -year specifier was changed in accordance with the recommendations of The -Open Group and all major Unix vendors. When a century is not otherwise -specified, values in the range 69-99 refer to the twentieth century and -values in the range 00-68 refer to the twenty-first century. Be very careful -when interpreting 2-digit year expressions. +year specifier was changed in accordance with the recommendations of The Open +Group and all major Unix vendors. When a century is not otherwise specified, +values in the range 69-99 refer to the twentieth century and values in the +range 00-68 refer to the twenty-first century. Be very careful when +interpreting 2-digit year expressions. 1.9 Where do I get further information? The following sites have more information about gnuplot. - * ~http://www.comnets.rwth-aachen.de/doc/gnu/gnuplot37/gnuplot.html an - online documentation in html-format - * ~http://www.usf.uni-osnabrueck.de/ breiter/tools/gnuplot/index.en.html - has many links to many features and add-ons for gnuplot - * ~http://web.math-cs.uni.edu/cs/Help/gnuplot/TOC.html contains an online - tutorial - * ~http://brian.me.tufts.edu/GnuplotInLaTeX/ contrains infos abount - gnuplot and LATEX - * ~http://www.eso.org/ ndevilla/gnuplot/ explains the use of a gnuplot - API in ANSI C (commonly known as gnuplot_(pipes) - * ~http://ricardo.ecn.wfu.edu/ cottrell/qplot/ on how to plot quarterly - time data - * ~http://monsoon.harvard.edu/ mhagger/download a Python interface for - gnuplot - * ftp.thewrittenword.com in /free/by-package/ contains Solaris, IRIX, - HP-UX and Digital Unix binaries - * ~http://www.sci.muni.cz/ mikulik/gnuplot.html has Petr's famous OS/2 - mouse support and the pm3d terminal for colour 3d surfaces. Furthermore - some more links to other sites + * http://www.comnets.rwth-aachen.de/doc/gnu/gnuplot37/gnuplot.html an online + documentation in html-format + * http://www.usf.uni-osnabrueck.de/ breiter/tools/gnuplot/index.en.html has + many links to many features and add-ons for gnuplot + * http://web.cs.uni.edu/Help/gnuplot/ contains an online tutorial + * http://brian.me.tufts.edu/GnuplotInLaTeX/ contains infos abount gnuplot and + LATEX + * http://ndevilla.free.fr/gnuplot/ explains the use of a gnuplot API in ANSI + C (commonly known as gnuplot_pipes + * http://ricardo.ecn.wfu.edu/ cottrell/qplot/ on how to plot quarterly time + data + * http://monsoon.harvard.edu/ mhagger/download a Python interface for gnuplot + * ftp.thewrittenword.com in /free/by-package/ contains Solaris, IRIX, HP-UX + and Digital Unix binaries + * http://www.sci.muni.cz/ mikulik/gnuplot.html has Petr's famous OS/2 mouse + support and the pm3d terminal for colour 3d surfaces. Furthermore some more + links to other sites -Some documentation is available in other languages than English. Those -include: +Some documentation is available in other languages than English. Those include: - * ~http://mucha.obspm.fr/ grouss/gnuplt/gnuplot.html contient des - informations dans la langue de Molière: les 1ers pas avec gnuplot, - malheureusement seulement version 3.5 - * ~http://www.al.lu/euler/gnuplot.shtml encore des informations en langue - française avec possibilité de téléchargement des versions binaires + * http://www.multimania.com/ gersoo/gnuplt/index.html contient des + informations dans la langue de Molière: les 1ers pas avec gnuplot, + malheureusement seulement version 3.5. Vous trouverez un cours directement + en ligne appelleé "1ers pas avec gnuplot". Le cours est aussi disponible en + Postscript. + * http://www.al.lu/euler/gnuplot.shtml encore des informations en langue + française avec possibilité de téléchargement des versions binaires -Here are some more sites, however these are somewhat outdated in carrying -still references to beta versions. If you download software from there you -should be aware that beta versions are not officially endorsed. +Here are some more sites, however these are somewhat outdated in carrying still +references to beta versions. If you download software from there you should be +aware that beta versions are not officially endorsed. - * ~http://www.cs.dartmouth.edu/gnuplot_info.html slightly outdated site - for the 3.6 beta version, but also a web-gateway to the users' - newsgroup - * ~http://members.theglobe.com/gnuplot/ basically same as above. - * ~http://users.ece.gatech.edu/ schooley/gnuplot.html contains a - Macintosh version based on 3.6 beta 322 + * http://www.cs.dartmouth.edu/gnuplot_info.html slightly outdated site for + the 3.6 beta version, but also a web-gateway to the users' newsgroup + * http://members.theglobe.com/gnuplot/ basically same as above. + * http://homepage.mac.com/gnuplot/ is the new site for a Macintosh port of + gnuplot -The following sites were said to exist, howevere they seem to be down right -now. +The following sites were said to exist, however they seem to be down right now. - * ~http://www.geocities.com/SiliconValley/Foothills/6647/ the copyright - statement and some binaries contains ads - * ~http://www.delorie.com/gnu/docs/gnuplot/gplot_toc.html doesn't work - * picard.tamu.edu in /pub/gnuplot gives a tutorial - * ~http://feff.phys.washington.edu/ ravel/gnuplot has a new mode for the - users of (X)Emacs + * http://www.geocities.com/SiliconValley/Foothills/6647/ the copyright + statement and some binaries contains ads + * http://www.delorie.com/gnu/docs/gnuplot/gplot_toc.html doesn't work + * picard.tamu.edu in /pub/gnuplot gives a tutorial + * http://feff.phys.washington.edu/ ravel/gnuplot has a new mode for the users + of (X)Emacs -2. Setting it up +2 Setting it up 2.1 What is the current version of gnuplot? @@ -304,32 +309,35 @@ The current version of gnuplot is 3.7, which has many 2.2 Where can I get gnuplot? -The source distribution ("gnuplot-3.7.tar.gz" or a similar name) is -available from the official distribution site and its mirrors. +The best place is definitly http://www.gnuplot.info. From there you find +various pointers to other sites. -The main server is ftp.ucc.ie in /pub/gnuplot/ . This server is mirrored by -several others, among those are +The source distribution ("gnuplot-3.7.tar.gz" or a similar name) is available +from the official distribution site and its mirrors. - * mirror.aarnet.edu.au in /pub/gnuplot/ - * ftp.dartmouth.edu in /pub/gnuplot/ - * ftp.irisa.fr in /pub/gnuplot/ - * ftp.gnuplot.vt.edu in /pub/gnuplot/ +The main server is ftp.gnuplot.info in /pub/gnuplot/. This server is mirrored +by several others, among those are -You can also have a look at the following WWW-pages which provide a source -to obtain gnuplot: + * mirror.aarnet.edu.au in /pub/gnuplot/ + * ftp.dartmouth.edu in /pub/gnuplot/ + * ftp.irisa.fr in /pub/gnuplot/ + * ftp.gnuplot.vt.edu in /pub/gnuplot/ - * ~http://members.theglobe.com/gnuplot/ - * ~http://www.geocities.com/SiliconValley/Foothills/6647/ - * ~http://mirror.aarnet.edu.au/pub/gnuplot/ +You can also have a look at the following WWW-pages which provide a source to +obtain gnuplot: + * http://members.theglobe.com/gnuplot/ + * http://www.geocities.com/SiliconValley/Foothills/6647/ + * http://mirror.aarnet.edu.au/pub/gnuplot/ + The current version for the Macintosh is 2.04b, based on gnuplot 3.5 pre3.6beta338, and is available from - * ~http://users.ece.gatech.edu/ schooley/ . + * http://users.ece.gatech.edu/ schooley/. Unfortunately, this version does not seem to be maintained anymore. -Source and binary distributions for the Amiga are available on Aminet +Source and binary distributions for the Amiga are available on Aminet ftp.wustl.edu in aminet/ and its mirrors, for example ftp.uni-kl.de, oes.orst.edu or ftp.luth.se. @@ -338,40 +346,39 @@ called gp37dos.zip, gp37dj.zip, gp37w16.zip, gp37mgw.z OS/2 binaries are called gp37os2.zip. -An X11 Window System front-end is available at -~http://www.flash.net/ dmishee/xgfe/xgfe.html . +An X11 Window System front-end is available at http://www.flash.net/ dmishee/ +xgfe/xgfe.html. -The NeXTSTEP front end can be found at next-ftp.peak.org in -/pub/next/binaries/plotting/Gnuplot1.2_bin.tar.Z . +The NeXTSTEP front end can be found at next-ftp.peak.org in /pub/next/binaries/ +plotting/Gnuplot1.2_bin.tar.Z. -A version for OS-9/68K can be found at cabrales.cs.wisc.edu in -/pub/OSK/GRAPHICS/gnuplot32x.tar.Z ; it includes both an X-Window Systems -and a non - X-Window Systems version. +A version for OS-9/68K can be found at cabrales.cs.wisc.edu in /pub/OSK/ +GRAPHICS/gnuplot32x.tar.Z; it includes both an X-Window Systems and a non - +X-Window Systems version. -Versions for the Atari ST and TT, which include some GEM windowing support, -are available from ftp.uni-kl.de in /pub/atari/graphics/ , as gplt35st.zip -and gplt35tt.zip. They work best under MiNT. +Versions for the Atari ST and TT, which include some GEM windowing support, are +available from ftp.uni-kl.de in /pub/atari/graphics/, as gplt35st.zip and +gplt35tt.zip. They work best under MiNT. -Executable files, plus documentation in Japanese, exist for the X680x0 on -ftp.csis.oita-u.ac.jp in /pub/x68k/fj.binaries.x68000/vol2 . +Executable files, plus documentation in Japanese, exist for the X680x0 on +ftp.csis.oita-u.ac.jp in /pub/x68k/fj.binaries.x68000/vol2. It is a good idea to look for a nearby ftp site when downloading things. You can use archie for this. See if an archie client is installed at your system -(by simply typing archie at the command prompt), or send mail to -archie@sura.net with the word 'help' in both the subject line and the body -of the mail. However, be aware that the version you find at a near ftp site -may well be out of date; check the last modification date and the number of -bytes against the newest release at one of the official servers. +(by simply typing archie at the command prompt), or send mail to +archie@sura.net with the word 'help' in both the subject line and the body of +the mail. However, be aware that the version you find at a near ftp site may +well be out of date; check the last modification date and the number of bytes +against the newest release at one of the official servers. -If you can't locate a working archie server, you can use other web-based -search engines for searching for gnuplot. One of these would be Lycos at -~http://ftpsearch.lycos.com/ . +If you can't locate a working archie server, you can use other web-based search +engines for searching for gnuplot. One of these would be Lycos at http:// +ftpsearch.lycos.com/. -As of June 1999, the gnuplot distribution is also mirrored at the -Comprehensive TeX Archive Network (CTAN) in the graphics/gnuplot directory. -See +As of June 1999, the gnuplot distribution is also mirrored at the Comprehensive +TeX Archive Network (CTAN) in the graphics/gnuplot directory. See - * ~http://www.ctan.org/ . + * http://www.ctan.org/. Bug fixes can also be found at gnuplot distribution sites in the patches directory. @@ -380,60 +387,59 @@ directory. As you would any other installation. Read the files README.1ST and README. -For Unix, use configure and make. For DOS, if you are using bash and DJGPP, -you can just run djconfig.sh. For other platforms, copy the relevant -makefile from config/ to src, change to src and run make. +For Unix, use configure and make. For DOS, if you are using bash and DJGPP, you +can just run djconfig.sh. For other platforms, copy the relevant makefile from +config/ to src, change to src and run make. 2.4 What documentation is there, and how do I get it? The documentation is included in the source distribution. Look at the docs subdirectory, where you'll find - * a Unix man page, which says how to start gnuplot - * a help file, which also can be printed as a manual - * a tutorial on using gnuplot with LATEX - * a quick reference summary sheet for TEXonly + * a Unix man page, which says how to start gnuplot + * a help file, which also can be printed as a manual + * a tutorial on using gnuplot with LATEX + * a quick reference summary sheet for TEXonly -PostScript copies of the documentation can be ftp'd from ftp.dartmouth.edu -in /pub/gnuplot , as manual.ps.Z and tutorial.ps.Z +PostScript copies of the documentation can be ftp'd from ftp.dartmouth.edu in / +pub/gnuplot, as manual.ps.Z and tutorial.ps.Z -The documentation is built during the installation if you have LATEX -installed on your system, look in the directories docs and tutorial. +The documentation is built during the installation if you have LATEX installed +on your system, look in the directories docs and tutorial. Documentation about gnuplot is available in the most common formats at the gnuplot distribution sites in the files gpdoc.zip and gpdoc2.zip. -3. Working with it. +3 Working with it. 3.1 How do I get help? Read this document. -Give the 'help' command at the initial prompt. After that, keep looking -through the keywords. Good starting points are 'plot' and 'set'. +Give the 'help' command at the initial prompt. After that, keep looking through +the keywords. Good starting points are 'plot' and 'set'. Read the manual, if you have it. Look through the demo subdirectory; it should give you some ideas. -Ask your colleagues, the system administrator or the person who set up -gnuplot. +Ask your colleagues, the system administrator or the person who set up gnuplot. -If all these fail, please upgrade to the newest version of gnuplot or urge -your system-administrator to do so. Then post a question to -comp.graphics.apps.gnuplot or send mail to the gatewayed mailing list -info-gnuplot@dartmouth.edu . Do not forget to cite the version number and -the operating system. If you want to subscribe to the mailing list, send a -mail to majordomo@dartmouth.edu with the body of the message being -'subscribe info-gnuplot'. Please don't do this if you can get -comp.graphics.apps.gnuplot directly. If you post a question there, it is -considered good form to solicit e-mail replies and post a summary. +If all these fail, please upgrade to the newest version of gnuplot or urge your +system-administrator to do so. Then post a question to ~ +comp.graphics.apps.gnuplot or send mail to the gatewayed mailing list +info-gnuplot@dartmouth.edu. Do not forget to cite the version number and the +operating system. If you want to subscribe to the mailing list, send a mail to +majordomo@dartmouth.edu with the body of the message being 'subscribe +info-gnuplot'. Please don't do this if you can get ~comp.graphics.apps.gnuplot +directly. If you post a question there, it is considered good form to solicit +e-mail replies and post a summary. 3.2 How do I print out my graphs? The kind of output produced is determined by the 'set terminal' command; for -example, 'set terminal postscript' will produce the graph in PostScript -format. Output can be redirected using the 'set output' command. +example, 'set terminal postscript' will produce the graph in PostScript format. +Output can be redirected using the 'set output' command. As an example, the following prints out a graph of sin(x) on a Unix machine running the X-Window System. @@ -452,68 +458,68 @@ lp: printed file sin.ps on fg20.rz.uni-karlsruhe.de (5 ! gnuplot> -In Microschrott Windows you click in the upper left corner of the graph -window and print directly from there. +In Microschrott Windows you click in the upper left corner of the graph window +and print directly from there. 3.3 How do I include my graphs in ? Basically, you save your plot to a file in a format your word processor can -understand (using "set term" and "set output", see above), and then you read -in the plot from your word processor. Vector formats should be prefered, as -you can scale your graph later to the right size. +understand (using "set term" and "set output", see above), and then you read in +the plot from your word processor. Vector formats should be preferred, as you +can scale your graph later to the right size. -Details depend on the kind of word processor you use; use "set term" to get -a list of available file formats. +Details depend on the kind of word processor you use; use "set term" to get a +list of available file formats. Many word processors can use Encapsulated PostScript for graphs. This can be generated by the "set terminal postscript eps" command. Most MS-DOS word processors understand HPGL (terminal type hpgl). -With TeX, it depends on what you use to print your dvi files. If you use -dvips or dvi2ps, you can use Encapsulated PostScript. For emTeX (popular for -MS-DOSns OS/2), you can use emTeX, otherwise use the LATEXterminal type, -which generates a picture environment. +With TeX, it depends on what you use to print your dvi files. If you use dvips +or dvi2ps, you can use Encapsulated PostScript. For emTeX (popular for MS-DOSns +OS/2), you can use emTeX, otherwise use the LATEX terminal type, which +generates a picture environment. -If nothing else helps, try using the pgm or ppm format and converting it to -a bitmap format your favourite word processor can understand. An invaluable -tool for this is Jef Poskanzer's PBMPLUS package. +If nothing else helps, try using the pgm or ppm format and converting it to a +bitmap format your favourite word processor can understand. An invaluable tool +for this is Jef Poskanzer's PBMPLUS package. -The PBMPLUS package is available in the contrib distribution for the -X-Window System. The original site for this is ftp.x.org in /contrib/ . -There are many mirrors, e.g. ftp.tu-darmstadt.de in /pub/X11/contrib/ or . -sunsite.unc.edu in /pub/X11/contrib/ . +The PBMPLUS package is available in the contrib distribution for the X-Window +System. The original site for this is ftp.x.org in /contrib/. There are many +mirrors, e.g. ftp.tu-darmstadt.de in /pub/X11/contrib/ or . sunsite.unc.edu in +/pub/X11/contrib/. -The most recent release of pbm by the author is dated December 91 and is -called pbmplus10dec91.tar.Z. +The most recent release of pbm by the author is dated December 91 and is called +pbmplus10dec91.tar.Z. There is new version including lots of patches from the net that is not maintained by the author called netpbm, with the newest version called netpbm-1mar1994.tar.gz. -Check archie (see Q2.2) for an archive site near you. +Check archie (see Q[*] ) for an archive site near you. -For Microso$t Windows and MacOS you can use the clip board to copy your -graph and paste it into your favourite Windows or MacOS word processor. +For Microso$t Windows and MacOS you can use the clip board to copy your graph +and paste it into your favourite Windows or MacOS word processor. 3.4 How do I post-process a gnuplot graph? This depends on the terminal type you use. -You can use the terminal type fig (you may need to recompile gnuplot to -enable this terminal type, by putting #define FIG into ), and use -the xfig drawing program to edit the plot afterwards. You can obtain the -xfig program from its web site ~http://www.xfig.org/ . More information -about the text-format used for fig can be found in the fig-package. +You can use the terminal type fig (you may need to recompile gnuplot to enable +this terminal type, by putting #define FIG into ), and use the xfig +drawing program to edit the plot afterwards. You can obtain the xfig program +from its web site http://www.xfig.org/. More information about the text-format +used for fig can be found in the fig-package. -You may use the tgif terminal, which creates output suitable for reading -within tgif (~http://bourbon.cs.umd.edu:8001/tgif/ ), an interactive 2-D -drawing tool under X11. +You may use the tgif terminal, which creates output suitable for reading within +tgif (http://bourbon.cs.umd.edu:8001/tgif/), an interactive 2-D drawing tool +under X11. -Both tgif and xfig can also be obtained from the X Window contrib -distribution (see Q3.3). +Both tgif and xfig can also be obtained from the X Window contrib distribution +(see Q3.3). Pstoedit can convert Postscript into a wide variety of formats. Pstoedit is -available a ~http://www.geocities.com/SiliconValley/Nework/1958/pstoedit/ . +available a http://www.geocities.com/SiliconValley/Nework/1958/pstoedit/. Gimp may be able to post-process pixel graphics generated with gnuplot. @@ -525,42 +531,38 @@ graphic formats, and pixel based programs for pixel gr Again, this depends on the terminal type. For PostScript, you can edit the generated PostScript file. An overview of what means what in the PostScript files gnuplot generates can be found at picard.tamu.edu in /pub/gnuplot/ as -gs-ps.doc. A general introduction to PostScript can be found at +gs-ps.doc. A general introduction to PostScript can be found at unix.hensa.ac.uk in /pub/misc/ukc.reports/comp.sci/reports/ as 11-92.ps.Z. 3.6 How do I generate plots in the GIF format? -If gnuplot was compiled with the external GD library, there is a gif -terminal. +If gnuplot was compiled with the external GD library, there is a gif terminal. -As of version 1.6, gd library dropped support for gif in favour of the -superior png format. For those who absolutely need gif support in gnuplot, -we are providing older versions of gd library at the gnuplot distribution -sites which are free of Unisys patented code. Please read also the file -README a the ftp-sites. +As of version 1.6, gd library dropped support for gif in favour of the superior +png format. For those who absolutely need gif support in gnuplot, we are +providing older versions of gd library at the gnuplot distribution sites which +are free of Unisys patented code. Please read also the file README a the +ftp-sites. 3.7 Can I animate my graphs? -First have a look at animate.dem in the demo directory of gnuplot. -Basically, animated graphs are a sequence of plots in a suitable format. +First have a look at animate.dem in the demo directory of gnuplot. Basically, +animated graphs are a sequence of plots in a suitable format. -Then have a look at the tool whirlgif 3.04, available at -~http://www.danbbs.dk/ dineo/whirlgif . It reads run-length encoded gifs and -packs them into a minimal animation. On the web-pages you will find a manual -and an example. +Then have a look at the tool whirlgif 3.04, available at http://www.danbbs.dk/ + dino/whirlgif. It reads run-length encoded gifs and packs them into a minimal +animation. On the web-pages you will find a manual and an example. You can also write a small script to get gnuplot to output a family of GIF -files, then have it execute some animator such as gifsicle: -~http://http://www.lcdf.org/ eddietwo/gifsicle or gifmerge -~http://http://the-labs.com/GIFMerge +files, then have it execute some animator such as gifsicle: http://http:// +www.lcdf.org/ eddietwo/gifsicle or gifmerge http://http://the-labs.com/GIFMerge mpeg_encode will encode a sequence of images into the mpeg-format. 3.8 How do I plot implicit defined graphs? -Implicit graphs or curves cannot be plotted directly in gnuplot. However -there is a workaround. - +Implicit graphs or curves cannot be plotted directly in gnuplot. However there +is a workaround. gnuplot> # as example. Place your definition in the following line gnuplot> f(x,y) = y - x**2 / tan(y) gnuplot> set contour base @@ -572,45 +574,44 @@ gnuplot> splot f(x,y) gnuplot> set out gnuplot> set term {your usual terminal for interactive work} gnuplot> plot 'curve.dat' w l +The trick is to draw the single contour line z=0 of the surface z=f(x,y), and +store the resulting contour curve to a gnuplot datafile. -The trick is to draw the single contour line z=0 of the surface z=f(x,y), -and store the resulting contour curve to a gnuplot datafile. +4 Wanted features -4. Wanted features - 4.1 What's new in gnuplot 3.7? -Too many things to be named here. Please refer to the NEWS file in the -source distribution. +Too many things to be named here. Please refer to the NEWS file in the source +distribution. 4.2 Does gnuplot have hidden line removal? -Version 3.7 supports hidden line removal on all platforms; use the command -set hidden3d. +Version 3.7 supports hidden line removal on all platforms; use the command set +hidden3d. -The 16-bit binaries of gnuplot support the hidden line removal only -partially as the hidden-line algorithm may hit the 640k memory limit. +The 16-bit binaries of gnuplot support the hidden line removal only partially +as the hidden-line algorithm may hit the 640k memory limit. 4.3 Does gnuplot support bar-charts/histograms/boxes? -Use the style "with boxes" for bar charts. To get filled boxes, you can try -a modification by Steve Cumming and jturk, available via ftp from the -contrib directory ftp.ucc.ie in /pub/gnuplot/contrib/gpl37fboxpatch.tar.gz . +Use the style "with boxes" for bar charts. To get filled boxes, you can try a +modification by Steve Cumming and jturk, available via ftp from the contrib +directory ftp.ucc.ie in /pub/gnuplot/contrib/gpl37fboxpatch.tar.gz. Bernhard Reiter wrote an AWK script to post-process the fig-terminal output. -Please have a look at -~http://www.usf.uni-osnabrueck.de/ breiter/tools/gnuplot/barcharts.en.html . +Please have a look at http://www.usf.uni-osnabrueck.de/ breiter/tools/gnuplot/ +barcharts.en.html. 4.4 Does gnuplot support pie charts? -It's not possible in gnuplot, but have a look at -~http://www.usf.uni-osnabrueck.de/ breiter/tools/piechart/piecharts.en.html +It's not possible in gnuplot, but have a look at http:// +www.usf.uni-osnabrueck.de/ breiter/tools/piechart/piecharts.en.html 4.5 Does gnuplot quarterly time charts? -It's not possible in gnuplot, but have a look at -~http://ricardo.ecn.wfu.edu/ cottrell/qplot . The corresponding file -qplot.zip can be obtained from the contrib directory on any gnuplot server. +It's not possible in gnuplot, but have a look at http://ricardo.ecn.wfu.edu/ + cottrell/qplot. The corresponding file qplot.zip can be obtained from the +contrib directory on any gnuplot server. 4.6 Does gnuplot support multiple y-axes on a single plot? @@ -620,26 +621,36 @@ Yes. You can have 2 x- and 2 y-axes per plot. See "plo Yes. "set multiplot" -If you use the postscript terminal and plot one graph per page you can use -the program mpage (~http://www.mesa.nl/pub/mpage ) to print multiple logical -pages per physical page. A similar program is the psnup program in the -psutils package. This package is available at any CTAN mirror. +If you use the postscript terminal and plot one graph per page you can use the +program mpage (http://www.mesa.nl/pub/mpage) to print multiple logical pages +per physical page. A similar program is the psnup program in the psutils +package. This package is available at any CTAN mirror. 4.8 Can I put both data files and commands into a single file? -This feature is in gnuplot 3.7 when using the set multiplot command. +This is possible by the new plot "-" possibility. The plot "-" command allows +to read the data to be plot from standard input or the current batch job. +gnuplot> plot "-" +1 1 +2 4 +3 9 + + 4.9 Can I put Greek letters and super/subscripts into my labels? -You might try using the LATEXterminal type and putting text like -"\alpha_{3}" into it. +You might try using the LATEX terminal type and putting text like "\\alpha_{3}" +or '\alpha_{3}' into it. The enhanced option in the postscript terminal is also able to use sub- and -superscripts. +superscripts. It also allows to use Greek letters and symbols via symbol fonts. If you include your gnuplot-graphs into a LATEX document you can use the LATEX-package psfrag to typeset any characters into your graphs. +One more possibility is to use the MetaPost terminal. It supports TEX syntax +and is converted onto encapsulated PostScript by mpost. + 4.10 Can I do 1:1 scaling of axes? Use "set size square". @@ -654,8 +665,8 @@ To see a list of the available graphic drivers for you gnuplot, type "set term". Some graphics drivers are included in the normal distribution, but are -uncommented by default. If you want to use them, you'll have to change - gnuplot/term.h, and recompile. +uncommented by default. If you want to use them, you'll have to change gnuplot/ +term.h, and recompile. 4.13 Can I put different text sizes into my plots? @@ -666,18 +677,17 @@ help for the different terminals. For this, you will need to recompile gnuplot. -Modifications people make are either done by replacing files, such as -terminal drivers, or by 'patching'. If a file is a replacement, it will -probably tell you in its README or in the lines at the beginning. +Modifications people make are either done by replacing files, such as terminal +drivers, or by 'patching'. If a file is a replacement, it will probably tell +you in its README or in the lines at the beginning. -To patch a file, you need Larry Wall's patch utility. On many UNIX systems, -it is already installed; do a man patch to check. If it isn't, you'll have -to get it; it can be found wherever GNU software is archived. +To patch a file, you need Larry Wall's patch utility. On many UNIX systems, it +is already installed; do a man patch to check. If it isn't, you'll have to get +it; it can be found wherever GNU software is archived. 4.15 How do I skip data points? By specifying ? as a data value, as in - 1 2 2 3 3 ? @@ -691,13 +701,25 @@ This can be specified with the various options for the Depending on context, the main methods are: - * set arrow .... .... nohead where you have to compute explicitly the - start and the end of the arrow. - * generate (inlined) datapoints and plot them - * switch to parametric mode + * set arrow .... .... nohead where you have to compute explicitly the start + and the end of the arrow. + * generate (inlined) datapoints and plot them + * switch to parametric mode -5. Miscellaneous +4.18 How do I plot data files +4.19 How do I include accentuated characters in Postscript output? + +To obtain accentuated characters like ü or n into postscript plots you should +use the postscript character codes together with the appropriate encoding +option. See the following example: + +gnuplot> set encoding iso_8859_1 +gnuplot> set title "M\374nchner Bierverbrauch \374ber die Jahre" +gnuplot> plot "bier.dat" u 1:2 + +5 Miscellaneous + 5.1 I've found a bug, what do I do? First, try to see whether it actually is a bug, or whether it is a feature @@ -707,34 +729,34 @@ Next, see whether you have an old version of gnuplot; the bug has been fixed in a newer release. Fixes for bugs reported since the release of the current version are held in -the patches directory at gnuplotdistribution sites. Before submitting a bug +the patches directory at gnuplot distribution sites. Before submitting a bug report, please check whether the bug in question has already been fixed. -If, after checking these things, you still are convinced that there is a -bug, proceed as follows. If you have a fairly general sort of bug report, -posting to comp.graphics.apps.gnuplot is probably the way to go. If you have -investigated a problem in detail, especially if you have a context or -unified diff that fixes the problem, please e-email a report to -bug-gnuplot@dartmouth.edu . +If, after checking these things, you still are convinced that there is a bug, +proceed as follows. If you have a fairly general sort of bug report, posting +to ~comp.graphics.apps.gnuplot is probably the way to go. If you have +investigated a problem in detail, especially if you have a context or unified +diff that fixes the problem, please e-email a report to +bug-gnuplot@dartmouth.edu. -The bug-gnuplot list is for reporting and collecting bug fixes, the -comp.graphics.apps.gnuplot newsgroup will be more help for finding work -arounds or actually solving gnuplotrelated problems. If you do send in a bug -report, be sure and include the version of gnuplot (including patchlevel) as -shown by the command "show version long", terminal driver, operating system, -an exact description of the bug and input which can reproduce the bug. -Failure to indicate these details can render a solution to your problem -almost impossible. Also, any context diffs should be referenced against the -latest official version of gnuplotif at all possible. +The bug-gnuplot list is for reporting and collecting bug fixes, the ~ +comp.graphics.apps.gnuplot newsgroup will be more help for finding work arounds +or actually solving gnuplot related problems. If you do send in a bug report, +be sure and include the version of gnuplot (including patchlevel) as shown by +the command "show version long", terminal driver, operating system, an exact +description of the bug and input which can reproduce the bug. Failure to +indicate these details can render a solution to your problem almost impossible. +Also, any context diffs should be referenced against the latest official +version of gnuplot if at all possible. -5.2 Can I use gnuplotroutines for my own programs? +5.2 Can I use gnuplot routines for my own programs? Yes. John Campbell jdc@nauvax.ucc.nau.edu has written gplotlib, a version of -gnuplotas C subroutines callable from a C program. This is available as -gplotlib.tar.Z at ftp.nau.edu in /pub/gplotlib.tar.Z . This library has been +gnuplot as C subroutines callable from a C program. This is available as +gplotlib.tar.gz at ftp.nau.edu in /pub/gplotlib.tar.gz. This library has been updated to be compatible with version 3.5. -On systems supporting the pipes, you can pipe commands to gnuplotfrom other +On systems supporting the pipes, you can pipe commands to gnuplot from other programs. 5.3 What extensions have people made to gnuplot? Where can I get them? @@ -743,82 +765,105 @@ Extensions are available from ftp.ucc.ie in /pub/gnupl Some extensions available: - * barchart_via_fig: awk scripts to produce barcharts with filled boxes. - * date-errorbar: allows dates in the hi/lo fields for errorbars. - * gp37os2-mouse: OS/2 binaries with mouse support (feature included in - current beta versions). - * perltk: A perl/tk canvas widget. - * polyg.patch: Implements a polygon plotting style. - * xgfe: graphical front end using the Qt widgets available at - ~http://lnc.usc.edu/docs/xgfe/xgfe.html . + * barchart_via_fig: awk scripts to produce barcharts with filled boxes. + * date-errorbar: allows dates in the hi/lo fields for errorbars. + * gp37os2-mouse: OS/2 binaries with mouse support (feature included in + current beta versions). + * perltk: A perl/tk canvas widget. + * polyg.patch: Implements a polygon plotting style. + * xgfe: graphical front end using the Qt widgets available at http:// + lnc.usc.edu/docs/xgfe/xgfe.html. + * Gnuplot.py: A python package to create graphs from within python. More + information at http://monsoon.harvard.edu/ mhagger/Gnuplot/Gnuplot.html. -5.4 Can I do heavy-duty data processing with gnuplot? +5.4 I need an integration, fft, iir-filter,....! -gnuplotalone is not suited very well for this. One thing you might try is +Gnuplot has been and is a plotting program, no data processing or mathematical +program suite. Therefore gnuplot can't do that. Look into the demo +"bivariat.dem" for a basic implementation of an integration. + +For more sophisticated data-processing read the next section. + +5.5 Can I do heavy-duty data processing with gnuplot? or What is beyond +gnuplot? + +gnuplot alone is not suited very well for this. One thing you might try is fudgit, an interactive multi-purpose fitting program written by Martin-D. -Lacasse (isaac@frodo.physics.mcgill.ca). It can use gnuplotas its graphics -back end and is available from ftp.physics.mcgill.ca in -/pub/Fudgit/fudgit_2.33.tar.Z and from the main Linux server, tsx-11.mit.edu -and its numerous mirrors around the world as -/pub/linux/sources/usr.bin/fudgit-2.33.tar.z. Versions are available for -AIX, Data General, HP-UX, IRIX 4, Linux, NeXT, Sun3, Sun4, Ultrix, OS/2 and -MS-DOS. The MS-DOS version is available on simtel20 mirrors (simtel20 itself -has closed down) in the "math" subdirectory as fudg_231.zip. +Lacasse (isaac@frodo.physics.mcgill.ca). It can use gnuplot as its graphics +back end and is available from ftp.physics.mcgill.ca in /pub/Fudgit/ +fudgit_2.33.tar.Z and from the main Linux server, tsx-11.mit.edu and its +numerous mirrors around the world as /pub/linux/sources/usr.bin/ +fudgit-2.33.tar.z. Versions are available for AIX, Data General, HP-UX, IRIX 4, +Linux, NeXT, Sun3, Sun4, Ultrix, OS/2 and MS-DOS. The MS-DOS version is +available on simtel20 mirrors (simtel20 itself has closed down) in the "math" +subdirectory as fudg_231.zip. Carsten Grammes has written a fitting program which has been merged into -gnuplot3.7. +gnuplot 3.7. Michael Courtney has written a program called lsqrft, which uses the -Levenberg-Marquardt - Algorithm for fitting data to a function. It is -available from hobbes.nmsu.edu in /pub/os2/apps/analysis/lsqrft15.zip ; -sources, which should compile on Unix, and executables for MS-DOS and OS/2 -are available. There is an interface to the OS/2 presentation manager. +Levenberg-Marquardt - Algorithm for fitting data to a function. It is available +from hobbes.nmsu.edu in /pub/os2/apps/analysis/lsqrft15.zip; sources, which +should compile on Unix, and executables for MS-DOS and OS/2 are available. +There is an interface to the OS/2 presentation manager. -You might also want to look at the applications developed by the Software -Tools Group (STG) at the National Center for Supercomputing Applications. -Ftp to ftp.ncsa.uiuc.edu and get the file README.BROCHURE for more -information. +You might also want to look at the applications developed by the Software Tools +Group (STG) at the National Center for Supercomputing Applications. Ftp to +ftp.ncsa.uiuc.edu and get the file README.BROCHURE for more information. You can also try pgperl, an integration of the PGPLOT plotting package with -Perl 5. Information can be found at -~http://www.ast.cam.ac.uk/AAO/local/www/kgb/pgperl , the source is available -from ftp.ast.cam.ac.uk in /pub/kgb/pgperl/ or linux.nrao.edu in -/pub/packages/pgperl/ . +Perl 5. Information can be found at http://www.ast.cam.ac.uk/AAO/local/www/kgb/ +pgperl, the source is available from ftp.ast.cam.ac.uk in /pub/kgb/pgperl/ or +linux.nrao.edu in /pub/packages/pgperl/. -Another possibility is Octave. To quote from its README: Octave is a -high-level language, primarily intended for numerical computations. It -provides a convenient command line interface for solving linear and -nonlinear problems numerically. The latest released version of Octave is -always available from ~http://www.che.wisc.edu/octave/ and via anonymous ftp -from bevo.che.wisc.edu in /pub/octave . +Another possibility is Octave. To quote from its README: Octave is a high-level +language, primarily intended for numerical computations. It provides a +convenient command line interface for solving linear and nonlinear problems +numerically. The latest released version of Octave is always available from +http://www.che.wisc.edu/octave/ and via anonymous ftp from bevo.che.wisc.edu in +/pub/octave. Octave is licensed under GPL (see http://www.gnu.org/copyleft/ +gpl.html). By the way, octave uses gnuplot as its plotting engine, so you get a +data-processing program on top of gnuplot. -5.5 I have ported gnuplotto another system, or patched it. What do I do? +Finally, there is scilab at http://www-rocq.inria.fr/scilab/ doing about the +same as matlab. It is free but copyrighted software. -If your patch is small, mail it to info-gnuplot-beta@dartmouth.edu , with a +5.6 I have ported gnuplot to another system, or patched it. What do I do? + +If your patch is small, mail it to info-gnuplot-beta@dartmouth.edu, with a thorough description of what the patch is supposed to do, which version of -gnuplotit is relative to, etc. Also, you can send notification of the patch -to the FAQ maintainer, if you want a mention. Please don't send the patch -itself to me. +gnuplot it is relative to, etc. Also, you can send notification of the patch to +the FAQ maintainer, if you want a mention. Please don't send the patch itself +to me. -If your modifications are extensive (such as a port to another system), -place them on a web/ftp site for download. There is currently no possibility -to upload patches. Send a note to info-gnuplot-beta@dartmouth.edu on where -to find the patch, what it is supposed to do, which version of gnuplotit is -to be applied against. For the time being (summer 1999) you can also send -the patch to gnuplot@ftp.ucc.ie . +If your modifications are extensive (such as a port to another system), place +them on a web/ftp site for download. There is currently no possibility to +upload patches. Send a note to info-gnuplot-beta@dartmouth.edu on where to find +the patch, what it is supposed to do, which version of gnuplot it is to be +applied against. For the time being (summer 1999) you can also send the patch +to gnuplot@ftp.ucc.ie. -5.6 I want to help in developing the next version of gnuplot. What can I do? +5.7 I want to help in developing the next version of gnuplot. What can I do? -Join the gnuplotbeta test mailing list by sending a mail containing the line -subscribe info-gnuplot-beta in the body (not the subject) of the mail to -Majordomo@Dartmouth.EDU . +Join the gnuplot beta test mailing list by sending a mail containing the line +subscribe info-gnuplot-beta in the body (not the subject) of the mail to +Majordomo@Dartmouth.EDU. -6. Making life easier +Also check with http://sourceforge.net/projects/gnuplot about latest source for +beta releases for development. +5.8 Open questions for inclusion into the FAQ? + +info-gnuplot-beta@Dartmouth.EDU. + +Please submit your questions (along with the answer) to +info-gnuplot-beta@Dartmouth.EDU. + +6 Making life easier + 6.1 How do I plot two functions in non-overlapping regions? Use a parametric plot. An example: - gnuplot> set parametric gnuplot> a=1 gnuplot> b=3 @@ -831,19 +876,16 @@ gnuplot> f2(x) = x**2/8 gnuplot> plot [t=0:1] x1(t),f1(x1(t)) title "f1", x2(t), f2(x2(t)) title "f2" You can also use gnuplot's ability to ignore mathematically undefined -expressions: the expression 1/0 is silently ignored, thus a construction -like - +expressions: the expression 1/0 is silently ignored, thus a construction like gnuplot> set xran [-10:10] gnuplot> plot (abs(x)>0.5?1/0: x**2) - plots a quadratic function only for |x| < 0.5. 6.2 How do I run my data through a filter before plotting? -If your system supports the popen() function, as Unix does, you should be -able to run the output through another process, for example a short awk -program, such as +If your system supports the popen() function, as Unix does, you should be able +to run the output through another process, for example a short awk program, +such as gnuplot> plot "< awk ' { print $1, $3/$2 } ' file.in" @@ -853,13 +895,12 @@ datafiles. See "help plot". 6.3 How do I make it easier to use gnuplot with LATEX? There is a set of LATEX macros and shell scripts that are meant to make your -life easier when using gnuplot with LaTeX. This package can be found on -ftp.dartmouth.edu in pub/gnuplot/latex.shar , by David Kotz. For example, -the program "plotskel" can turn a gnuplot-output file plot.tex into a -skeleton file skel.tex, that has the same size as the original plot but -contains no graph. With the right macros, the skeleton can be used for -preliminary LATEX passes, reserving the full graph for later passes, saving -tremendous amounts of time. +life easier when using gnuplot with LATEX. This package can be found on +ftp.dartmouth.edu in pub/gnuplot/latex.shar, by David Kotz. For example, the +program "plotskel" can turn a gnuplot-output file plot.tex into a skeleton file +skel.tex, that has the same size as the original plot but contains no graph. +With the right macros, the skeleton can be used for preliminary LATEX passes, +reserving the full graph for later passes, saving tremendous amounts of time. 6.4 How do I save and restore my settings? @@ -869,17 +910,15 @@ for details. 6.5 How do I plot lines (not grids) using splot? If the data in a data file for splot is arranged in such a way that each one -has the same number of data points (using blank lines as delimiters, as -usual), splot will plot the data with a grid. If you want to plot just -lines, use a different number of data entries (you can do this by doubling -the last data point, for example). Don't forget to set parametric mode, of -course. +has the same number of data points (using blank lines as delimiters, as usual), +splot will plot the data with a grid. If you want to plot just lines, use a +different number of data entries (you can do this by doubling the last data +point, for example). Don't forget to set parametric mode, of course. -6.6 How do I plot a function f(x,y) which is bounded by other functions in -the x-y plain? +6.6 How do I plot a function f(x,y) which is bounded by other functions in the +x-y plain? An example: - gnuplot> f(x,y) = x**2 + y **2 gnuplot> x(u) = 3*u gnuplot> yu(x) = x**2 @@ -889,37 +928,37 @@ gnuplot> set cont gnuplot> splot [0:1] [0:1] u,yl(x(u))+(yu(x(u)) - yl(x(u)))*v,\ > f(x(u), (yu(x(u)) - yl(x(u)))*v) -6.7 How do I get rid of ? +6.7 How do I get rid of in a plot? -Usually, there is a set command to do this; do a gnuplot> ?set no for a -short overview. +Usually, there is a set command to do this; do a gnuplot> ?set no for a short +overview. 6.8 How do I call gnuplot from my own programs? -There's a code which works for a UNIX system, using (efficient) named pipes. -On M$ Windows platforms, due to the lacking standard input of GUI programs, -you need to use the C-code pgnuplot written by Hans-Bernhard Broeker -broeker@physik.rwth-aachen.de . You can obtain this file on a ftp-server +There's a code which works for a UNIX system, using (efficient) named pipes. On +M$ Windows platforms, due to the lacking standard input of GUI programs, you +need to use the C-code pgnuplot written by Hans-Bernhard Broeker +broeker@physik.rwth-aachen.de. You can obtain this file on a ftp-server carrying the source for gnuplot. 6.9 What if I need h-bar (Planck's constant)? There is no predefined variable like pi. However to put h-bar as a character -into the label, you must use the PostScript terminal. You can play around -with constructs like @{/=56 -} {/=24 h} or {/=8 @{/Symbol=24 -} _{/=14 h}} -In the latter, the "-" (a long one in /Symbol) is non-spacing and 24-pt. The -14-pt "h" is offset by an 8-pt space (which is the space preceding the "_") -but smaller, since it's written as a subscript. But these don't look too -much like the hbar we're used to, since the bar is horizontal instead of -sloped. I don't see a way to get that. I tried using an accent ( -264 in isoLatin encoding), but I haven't found a way to scale and position -the pieces correctly. +into the label, you must use the PostScript terminal. You can play around with +constructs like @{/=56 -} {/=24 h} or {/=8 @{/Symbol=24 -} _{/=14 h}} In the +latter, the "-" (a long one in /Symbol) is non-spacing and 24-pt. The 14-pt "h" +is offset by an 8-pt space (which is the space preceding the "_") but smaller, +since it's written as a subscript. But these don't look too much like the hbar +we're used to, since the bar is horizontal instead of sloped. I don't see a way +to get that. I tried using an accent ( +264 in isoLatin encoding), but I haven't found a way to scale and position the +pieces correctly. One more possibility would be {/=14 @^{/Symbol=10 -}{/=14 h}}. (This is a hint by Richard Crawford). -7. Known Problems +7 Known Problems 7.1 Gnuplot is not plotting any points under X11! How come? @@ -931,19 +970,21 @@ On VMS, you need to make several symbols: Then run gnuplot from your command line, and use "set term x11". +If you run gnuplot on Unix systems, be sure that the newest gnuplot_x11 is the +first in your search path. + 7.2 My isoline data generated by a Fortran program is not handled correctly. What can I do? -Update to the newest gnuplot. Gnuplot 3.7 is able to read Fortran-style -files where a blanc line can contain more than a linefeed. +Update to the newest gnuplot. Gnuplot 3.7 is able to read Fortran-style files +where a blank line can contain more than a linefeed. 7.3 Why does gnuplot ignore my very small numbers? Gnuplot treats all numbers less than 1e-08 as zero, by default. Thus, if you -are trying to plot a collection of very small numbers, they may be plotted -as zero. Worse, if you're plotting on a log scale, they will be off scale. -Or, if the whole set of numbers is "zero", your range may be considered -empty: +are trying to plot a collection of very small numbers, they may be plotted as +zero. Worse, if you're plotting on a log scale, they will be off scale. Or, if +the whole set of numbers is "zero", your range may be considered empty: gnuplot> plot 'test1' Warning: empty y range [4.047e-19:3e-11], adjusting to [-1:1] @@ -953,13 +994,11 @@ gnuplot> plot 'test1' y range is less than `zero` The solution is to change gnuplot's idea of "zero": - gnuplot> set zero 1e-20 For more information, "help set zero" -7.4 Gnuplot is plotting nothing when run via gnuplot ! What can I -do? +7.4 Gnuplot is plotting nothing when run via gnuplot ! What can I do? Put a pause -1 after the plot command in the file. On an X-Window System system, you can also use the -persist option, the X11 window is then not @@ -985,74 +1024,80 @@ You need to flush the output with a closing 'set outpu 7.7 When using the LATEX-terminal, there is an error during the LATEX-run! -Please upgrade to gnuplot 3.7. Some versions of its beta-release had a -problem in the LATEX-terminal. +Please upgrade to gnuplot 3.7. Some versions of its beta-release had a problem +in the LATEX-terminal. +The LATEX2$\epsilon$ -core does no longer include the commands " +Diamond" and " +Box"; they are included in the latexsym package, which is part of the base +distribution and thus part of any LaTeX implementation. Please do not forget to +use this package. + 7.8 The exit command does not work as documented! -This is a known bug and is fixed in the latest release. If you need the -feature please upgrade to the latest release. +This is a known bug and is fixed in the latest release. If you need the feature +please upgrade to the latest release. -7.9 I can't find the demos and example files at the URLs in the -documentation! +7.9 I can't find the demos and example files at the URLs in the documentation! -The examples have been removec from the NASA site. You can find the examples -now at ~http://www.gnuplot.vt.edu/gnuplot/gpdocs . There you will find both -PNG and GIF versions of the demo plots. There are some licensing problems -with GIF images, so you should probably prefer the PNG ones. They also have -the advantage to be much smaller in size. +The examples have been removed from the NASA site. You can find the examples +now at http://www.gnuplot.vt.edu/gnuplot/gpdocs. There you will find both PNG +and GIF versions of the demo plots. There are some licensing problems with GIF +images, so you should probably prefer the PNG ones. They also have the +advantage to be much smaller in size. -7.10 Calling gnuplot in a pipe or with a gnuplot-script doesn't produce -aplot! +7.10 Calling gnuplot in a pipe or with a gnuplot-script doesn't produce a plot! You can call gnuplot by using a short Perl-script like the following: - -#!/usr/bin/perl -open GP, "/usr/local/bin/gnuplot"; -print GP,"plot '/tmp/data.dat' with lines\n"; +#!/usr/local/bin/perl -w +open (GP, "|/usr/local/bin/gnuplot -persist") or die "no gnuplot"; +# force buffer to flush after each write +use FileHandle; +GP->autoflush(1); +print GP,"set term x11;plot '/tmp/data.dat' with lines\n"; close GP -Gnuplot closes its plot window on exit. The close GP command is executed, -and the plot window is closed even before you have a chance to look at it. +Gnuplot closes its plot window on exit. The close GP command is executed, and +the plot window is closed even before you have a chance to look at it. -There are thre solutions to this: first, use the pause -1 command in gnuplot -before closing the pipe. Second, close the pipe only if you are sure that -you don't need gnuplot and its plot window anymore. Last, you can use the -command line option -persist: this option leaves the X-Window System plot -window open. +There are three solutions to this: first, use the pause -1 command in gnuplot +before closing the pipe. Second, close the pipe only if you are sure that you +don't need gnuplot and its plot window anymore. Last, you can use the command +line option -persist: this option leaves the X-Window System plot window open. -8. Credits +8 Credits Gnuplot 3.7's main contributors are (in alphabetical order) Hans-Bernhard -Broeker, John Campbell, Robert Cunningham, David Denholm, Gershon Elber, -Roger Fearick, Carsten Grammes, Lucas Hart, Lars Hecking, Thomas Koenig, -David Kotz, Ed Kubaitis, Russell Lang, Alexander Lehmann, Alexander Mai, -Carsten Steger, Tom Tkacik, Jos Van der Woude, James R. Van Zandt, and Alex -Woo. +Broeker, John Campbell, Robert Cunningham, David Denholm, Gershon Elber, Roger +Fearick, Carsten Grammes, Lucas Hart, Lars Hecking, Thomas Koenig, David Kotz, +Ed Kubaitis, Russell Lang, Alexander Lehmann, Alexander Mai, Carsten Steger, +Tom Tkacik, Jos Van der Woude, James R. Van Zandt, and Alex Woo. This list was initially compiled by John Fletcher with contributions from -Russell Lang, John Campbell, David Kotz, Rob Cunningham, Daniel Lewart and -Alex Woo. Reworked by Thomas Koenig from a draft by Alex Woo, with -corrections and additions from Alex Woo, John Campbell, Russell Lang, David -Kotz and many corrections from Daniel Lewart. Again reworked for gnuplot 3.7 -by Alexander Mai and Jürgen v.Hagen with corrections by , Lars Hecking, -Hans-Bernhard Broecker and other people. +Russell Lang, John Campbell, David Kotz, Rob Cunningham, Daniel Lewart and Alex +Woo. Reworked by Thomas Koenig from a draft by Alex Woo, with corrections and +additions from Alex Woo, John Campbell, Russell Lang, David Kotz and many +corrections from Daniel Lewart. Again reworked for gnuplot 3.7 by Alexander Mai +and Juergen v.Hagen with corrections by Lars Hecking, Hans-Bernhard Broecker +and other people. About this document ... Gnuplot FAQ -This document was generated using the LaTeX2HTML translator Version 98.1p1 -release (March 2nd, 1998) +This document was generated using the LaTeX2HTML translator Version 2002-2-1 +(1.70) -Copyright © 1993, 1994, 1995, 1996, 1997, Nikos Drakos, Computer Based -Learning Unit, University of Leeds. +Copyright © 1993, 1994, 1995, 1996, Nikos Drakos, Computer Based Learning Unit, +University of Leeds. +Copyright © 1997, 1998, 1999, Ross Moore, Mathematics Department, Macquarie +University, Sydney. The command line arguments were: -latex2html -split 0 -show_section_numbers -html_version 3.2 gnuplot-faq.tex. +latex2html -split 0 -show_section_numbers -html_version 4.0 -nonavigation +faq.tex -The translation was initiated by Juergen von Hagen on 1999-10-20 - ------------------------------------------------------------------------ -[next] [up] [previous] -Juergen von Hagen -1999-10-20 +The translation was initiated by Lars Hecking on 2002-12-10 +------------------------------------------------------------------------------- + +Lars Hecking 2002-12-10