/*
* $Id: metapost.trm,v 1.5.2.4 1999/09/16 16:05:21 lhecking Exp $
*/
/* GNUPLOT - metapost.trm */
/*[
* Copyright 1990 - 1993, 1998
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
/* 1999/04/22
* GNUPLOT -- metapost.trm
*
* This terminal driver supports:
* Metapost Commands
*
* Based on metafont.trm, written by
* Pl Hedne
* Trondheim, Norway
* Pal.Hedne@termo.unit.no;
* with improvements by Carsten Steger
*
* and pstricks.trm, written by
* David Kotz and Raymond Toy
*
* Adapted to metapost by:
* Daniel H. Luecking <luecking@comp.uark.edu> and
* L Srinivasa Mohan <mohan@chemeng.iisc.ernet.in>
*/
#include "driver.h"
#ifdef TERM_REGISTER
register_term(mp)
#endif
#ifdef TERM_PROTO
TERM_PUBLIC void MP_options __PROTO((void));
TERM_PUBLIC void MP_init __PROTO((void));
TERM_PUBLIC void MP_graphics __PROTO((void));
TERM_PUBLIC void MP_text __PROTO((void));
TERM_PUBLIC void MP_linetype __PROTO((int linetype));
TERM_PUBLIC void MP_move __PROTO((unsigned int x, unsigned int y));
TERM_PUBLIC void MP_point __PROTO((unsigned int x, unsigned int y, int number));
TERM_PUBLIC void MP_pointsize __PROTO((double size));
TERM_PUBLIC void MP_linewidth __PROTO((double width));
TERM_PUBLIC void MP_vector __PROTO((unsigned int ux, unsigned int uy));
TERM_PUBLIC void MP_arrow __PROTO((unsigned int sx, unsigned int sy,
unsigned int ex, unsigned int ey,
TBOOLEAN head));
TERM_PUBLIC void MP_put_text __PROTO((unsigned int x, unsigned int y, char str[]));
TERM_PUBLIC int MP_justify_text __PROTO((enum JUSTIFY mode));
TERM_PUBLIC int MP_text_angle __PROTO((int ang));
TERM_PUBLIC void MP_reset __PROTO((void));
TERM_PUBLIC int MP_set_font __PROTO((char *font));
TERM_PUBLIC void MP_boxfill __PROTO((int style,
unsigned int x1, unsigned int y1,
unsigned int width, unsigned int height));
/* 5 inches wide by 3 inches high (default) */
#define MP_XSIZE 5.0
#define MP_YSIZE 3.0
/* gnuplot units will be one pixel if printing device has this
resolution */
#define MP_DPI (300)
#define MP_XMAX (MP_XSIZE*MP_DPI)
#define MP_YMAX (MP_YSIZE*MP_DPI)
#define MP_HTIC (5*MP_DPI/72) /* nominally 5pt */
#define MP_VTIC (5*MP_DPI/72) /* " 5pt */
#define MP_HCHAR (MP_DPI*53/10/72) /* " 5.3pt */
#define MP_VCHAR (MP_DPI*11/72) /* " 11pt */
#endif /* TERM_PROTO */
#ifndef TERM_PROTO_ONLY
#ifdef TERM_BODY
static double MP_xsize = MP_XSIZE;
static double MP_ysize = MP_YSIZE;
/* static double MP_xmax = MP_XMAX;
static double MP_ymax = MP_YMAX;
* unused, for now
*/
static int MP_posx;
static int MP_posy;
static char MP_fontname[MAX_ID_LEN + 1];
static double MP_fontsize;
static double MP_textmag;
enum JUSTIFY MP_justify = LEFT;
static int MP_ang = 0;
static int MP_char_code = 0;
/* number of nodes in an output line so far */
static int MP_linecount = 1;
/* Number of point types */
#define MP_POINT_TYPES 10
/* Number of line types */
#define MP_LINE_TYPES 8
/* are we in the middle of a MP path? */
static TBOOLEAN MP_inline = FALSE;
/* colored or dashed lines? */
static TBOOLEAN MP_color = FALSE;
static TBOOLEAN MP_solid = FALSE;
/* compatability mode*/
static TBOOLEAN MP_notex = FALSE;
/* has a font change taken place? */
static TBOOLEAN MP_fontchanged = FALSE;
/* The old types */
static int MP_oldline = -2;
/* The old sizes */
static double MP_oldptsize = 1.0;
static double MP_oldpen = 1.0;
/* terminate any path in progress */
static void MP_endline __PROTO((void));
/* max number of path nodes before a newline */
#define MP_LINEMAX 5
TERM_PUBLIC void
MP_options()
{
MP_color = FALSE;
MP_solid = FALSE;
MP_notex = FALSE;
MP_fontsize = 10.0;
MP_textmag = 1.0;
strcpy(MP_fontname, "cmr10");
strcpy(default_font, ""); /* output file will store default font info */
while (!END_OF_COMMAND) {
if (almost_equals(c_token, "m$onochrome")) {
MP_color = FALSE;
c_token++;
continue;
}
if (almost_equals(c_token, "c$olor") || almost_equals(c_token, "c$olour")) {
MP_color = TRUE;
c_token++;
continue;
}
if (almost_equals(c_token, "s$olid")) {
MP_solid = TRUE;
c_token++;
continue;
}
if (almost_equals(c_token, "da$shed")) {
MP_solid = FALSE;
c_token++;
continue;
}
if (almost_equals(c_token, "n$otex")) {
MP_notex = TRUE;
strcpy(MP_fontname, "pcrr8r");
c_token++;
continue;
}
if (almost_equals(c_token, "t$ex")) {
MP_notex = FALSE;
c_token++;
continue;
}
if (almost_equals(c_token, "de$fault")) {
c_token++;
continue;
}
if (almost_equals(c_token, "m$agnification")) {
c_token++;
if (!END_OF_COMMAND) { /* global text scaling */
struct value a;
MP_textmag = (double) real(const_express(&a));
}
c_token++;
continue;
}
break;
}
if (!END_OF_COMMAND && isstring(c_token)) { /* font name */
quote_str(MP_fontname, c_token, MAX_ID_LEN);
c_token++;
}
if (!END_OF_COMMAND) { /*font size */
struct value a;
MP_fontsize = (double) real(const_express(&a));
c_token++;
}
/* minimal error recovery: */
if (MP_fontsize < 5.0)
MP_fontsize = 5.0;
if (MP_fontsize > 99.99)
MP_fontsize = 99.99;
term->v_char = (unsigned int) (MP_DPI * MP_fontsize * MP_textmag * 11 / 720);
if (MP_notex) { /* Courier is a little wider than cmtt */
term->h_char = (unsigned int) (MP_DPI * MP_fontsize * MP_textmag * 6.0 / 720 + 0.5);
} else {
term->h_char = (unsigned int) (MP_DPI * MP_fontsize * MP_textmag * 5.3 / 720 + 0.5);
}
sprintf(term_options, "%s%s%s%s%6.3f \"%s\" %5.2f",
MP_color ? "color " : "", MP_solid ? "solid " : "",
MP_notex ? "notex " : "", "mag ",
MP_textmag, MP_fontname, MP_fontsize);
}
TERM_PUBLIC void
MP_init()
{
time_t now;
time(&now);
MP_posx = MP_posy = 0;
fprintf(gpoutfile, "%%GNUPLOT Metapost output: %s\n", asctime(localtime(&now)));
fputs("\n\
defaultmpt:=mpt:=4;\n\
th:=.6;\n\
\n\
def scalepen expr n = pickup pencircle scaled (n*th) enddef;\n\
def ptsize expr n = mpt:=n*defaultmpt enddef;\n",
gpoutfile);
fprintf(gpoutfile, "\ntextmag:=%6.3f;\n", MP_textmag);
fputs("\
vardef makepic(expr str) =\n\
if picture str : str scaled textmag\n\
% otherwise a string\n\
else: str infont defaultfont scaled (defaultscale*textmag)\n\
fi\n\
enddef;\n\
\n\
def infontsize(expr str, size) =\n\
infont str scaled (size / fontsize str)\n\
enddef;\n",
gpoutfile);
if (MP_notex) {
fprintf(gpoutfile, "\n\
defaultfont:= \"%s\";\n\
defaultscale := %6.3f/fontsize defaultfont;\n",
MP_fontname, MP_fontsize);
} else {
fputs("\n\
%font changes\n\
verbatimtex\n\
\\def\\setfont#1#2{%.\n\
\\font\\gpfont=#1 at #2pt\n\
\\gpfont}\n",
gpoutfile);
fprintf(gpoutfile, "\\setfont{%s}{%5.2f}\netex\n",
MP_fontname, MP_fontsize);
}
fputs("\n\
color currentcolor; currentcolor=black;\n\
boolean colorlines,dashedlines;\n",
gpoutfile);
if (MP_color) {
fputs("colorlines:=true;\n", gpoutfile);
} else {
fputs("colorlines:=false;\n", gpoutfile);
}
if (MP_solid) {
fputs("dashedlines:=false;\n", gpoutfile);
} else {
fputs("dashedlines:=true;\n", gpoutfile);
}
fputs("\n\
def _wc = withpen currentpen withcolor currentcolor enddef;\n\
def _ac = addto currentpicture enddef;\n\
def _sms = scaled mpt shifted enddef;\n\
% drawing point-types\n\
def gpdraw (expr n, x, y) =\n\
if n<0: _ac contour fullcircle _sms (x,y)\n\
elseif (n=1) or (n=3):\n\
_ac doublepath ptpath[n] _sms (x,y) _wc;\n\
_ac doublepath ptpath[n] rotated 90 _sms (x,y) _wc\n\
elseif n<6: _ac doublepath ptpath[n] _sms (x,y) _wc\n\
else: _ac contour ptpath[n] _sms (x,y) _wc\n\
fi\n\
enddef;\n\
\n\
% the point shapes\n\
path ptpath[];\n\
%diamond\n\
ptpath0 = ptpath6 = (-1/2,0)--(0,-1/2)--(1/2,0)--(0,1/2)--cycle;\n\
% plus sign\n\
ptpath1 = (-1/2,0)--(1/2,0);\n\
% square\n\
ptpath2 = ptpath7 = (-1/2,-1/2)--(1/2,-1/2)--(1/2,1/2)--(-1/2,1/2)--cycle;\n\
% cross\n\
ptpath3 := (-1/2,-1/2)--(1/2,1/2);\n\
% circle:\n\
ptpath4 = ptpath8:= fullcircle;\n\
% triangle\n\
ptpath5 = ptpath9 := (0,1/2)--(-1/2,-1/2)--(1/2,-1/2)--cycle;\n\
\n\
def linetype expr n =\n\
currentcolor:= if colorlines : col[n] else: black fi;\n\
if n = -1 :\n\
drawoptions(withcolor currentcolor withpen (currentpen scaled .5));\n\
elseif n < 1 :\n\
drawoptions(_wc);\n\
else :\n\
drawoptions( if dashedlines: dashed lt[n] fi _wc);\n\
fi\n\
enddef;\n\
\n\
% dash patterns\n\
picture lt[];\n\
lt1=dashpattern(on 2 off 2); % dashes\n\
lt2=dashpattern(on 2 off 2 on 0.2 off 2); %dash-dot\n\
lt3=lt1 scaled 1.414;\n\
lt4=lt2 scaled 1.414;\n\
lt5=lt1 scaled 2;\n\
lt6:=lt2 scaled 2;\n\
lt7=dashpattern(on 0.2 off 2); %dots\n\
\n\
color col[],cyan, magenta, yellow;\n\
cyan=blue+green; magenta=red+blue;yellow=green+red;\n\
col[-2]:=col[-1]:=col0:=black;\n\
col1:=red;\n\
col2:=(.2,.2,1); %blue\n\
col3:=(1,.66,0); %orange\n\
col4:=.85*green;\n\
col5:=.9*magenta;\n\
col6:=0.85*cyan;\n\
col7:=.85*yellow;\n\
\n\
%placing text\n\
picture GPtext;\n\
def put_text(expr pic, x, y, r, j) =\n\
GPtext:=makepic(pic);\n\
GPtext:=GPtext shifted\n\
if j = 1: (-(ulcorner GPtext + llcorner GPtext)/2)\n\
elseif j = 2: (-center GPtext)\n\
else: (-(urcorner GPtext + lrcorner GPtext)/2)\n\
fi\n\
rotated if r > 0: 90 else: 0 fi;\n\
draw GPtext shifted (x,y)\n\
enddef;\n",
gpoutfile);
}
TERM_PUBLIC void
MP_graphics()
{
/* initialize "remembered" drawing parameters */
MP_oldline = -2;
MP_oldpen = 1.0;
MP_oldptsize = pointsize;
fprintf(gpoutfile, "\nbeginfig(%d);\nw:=%gin;h:=%gin;\n",
MP_char_code, MP_xsize, MP_ysize);
fprintf(gpoutfile, "a:=w/%d;b:=h/%d;\n", term->xmax, term->ymax);
fprintf(gpoutfile, "scalepen 1; ptsize %g;linetype -2;\n", pointsize);
MP_char_code++;
}
TERM_PUBLIC void
MP_text()
{
if (MP_inline)
MP_endline();
fputs("endfig;\n", gpoutfile);
}
TERM_PUBLIC void
MP_linetype(lt)
int lt;
{
int linetype = lt;
if (linetype >= MP_LINE_TYPES)
linetype %= MP_LINE_TYPES;
if (MP_inline)
MP_endline();
if (MP_oldline != linetype) {
fprintf(gpoutfile, "linetype %d;\n", linetype);
MP_oldline = linetype;
}
}
TERM_PUBLIC void
MP_move(x, y)
unsigned int x;
unsigned int y;
{
if ((x != MP_posx) || (y != MP_posy)) {
if (MP_inline)
MP_endline();
MP_posx = x;
MP_posy = y;
} /* else we seem to be there already */
}
TERM_PUBLIC void
MP_point(x, y, pt)
unsigned int x;
unsigned int y;
int pt;
{
int pointtype = pt;
if (MP_inline)
MP_endline();
/* Print the shape defined by 'number'; number < 0 means
to use a dot, otherwise one of the defined points. */
if (pointtype >= MP_POINT_TYPES)
pointtype %= MP_POINT_TYPES;
fprintf(gpoutfile, "gpdraw(%d,%da,%db);\n", pointtype, x, y);
}
TERM_PUBLIC void
MP_pointsize(ps)
double ps;
{
if (MP_oldptsize != ps) {
if (MP_inline)
MP_endline();
fprintf(gpoutfile, "ptsize %g;\n", ps);
MP_oldptsize = ps;
}
}
TERM_PUBLIC void
MP_linewidth(lw)
double lw;
{
if (MP_oldpen != lw) {
if (MP_inline)
MP_endline();
fprintf(gpoutfile, "scalepen %g;\n", lw);
MP_oldpen = lw;
}
}
TERM_PUBLIC void
MP_vector(ux, uy)
unsigned int ux;
unsigned int uy;
{
if ((ux == MP_posx) && (uy == MP_posy))
return; /* Zero length line */
if (MP_inline) {
if (MP_linecount++ >= MP_LINEMAX) {
fputs("\n", gpoutfile);
MP_linecount = 1;
}
} else {
MP_inline = TRUE;
fprintf(gpoutfile, "draw (%da,%db)", MP_posx, MP_posy);
MP_linecount = 2;
}
MP_posx = ux;
MP_posy = uy;
fprintf(gpoutfile, "--(%da,%db)", MP_posx, MP_posy);
}
static void
MP_endline()
{
MP_inline = FALSE;
fprintf(gpoutfile, ";\n");
}
TERM_PUBLIC void
MP_arrow(sx, sy, ex, ey, head)
unsigned int sx;
unsigned int sy;
unsigned int ex;
unsigned int ey;
TBOOLEAN head;
{
MP_move(sx, sy);
if (head) {
fprintf(gpoutfile, "drawarrow (%da,%db)--(%da,%db);\n",
sx, sy, ex, ey);
} else if ((sx != ex) || (sy != ey)) {
fprintf(gpoutfile, "draw (%da,%db)--(%da,%db);\n",
sx, sy, ex, ey);
} /* else: arrow with no length and no head = sound of one hand clapping? */
MP_posx = ex;
MP_posy = ey;
}
TERM_PUBLIC void
MP_put_text(x, y, str)
unsigned int x, y;
char str[];
{
int i, j = 0;
char *text;
/* ignore empty strings */
if (!str || !*str)
return;
/* F***. why do drivers need to modify string args? */
text = gp_alloc(strlen(str)+1, "temp string");
strcpy(text,str);
if (MP_inline)
MP_endline();
switch (MP_justify) {
case LEFT:
j = 1;
break;
case CENTRE:
j = 2;
break;
case RIGHT:
j = 3;
break;
}
if (MP_notex) {
for (i = 0; i < strlen(text); i++)
if (text[i] == '"')
text[i] = '\''; /* Replace " with ' */
if (MP_fontchanged) {
fprintf(gpoutfile, "\
put_text(\"%s\" infontsize(\"%s\",%5.2f), %da, %db, %d, %d);\n",
text, MP_fontname, MP_fontsize, x, y, MP_ang, j);
} else {
fprintf(gpoutfile, "put_text(\"%s\", %da, %db, %d, %d);\n",
text, x, y, MP_ang, j);
}
} else if (MP_fontchanged) {
fprintf(gpoutfile, "\
put_text( btex \\setfont{%s}{%5.2f} %s etex, %da, %db, %d, %d);\n",
MP_fontname, MP_fontsize, text, x, y, MP_ang, j);
} else {
fprintf(gpoutfile, "put_text( btex %s etex, %da, %db, %d, %d);\n",
text, x, y, MP_ang, j);
}
free(text);
}
TERM_PUBLIC int
MP_justify_text(mode)
enum JUSTIFY mode;
{
MP_justify = mode;
return (TRUE);
}
TERM_PUBLIC int
MP_text_angle(ang)
int ang;
{
/* Metapost code does the conversion */
MP_ang = ang;
return (TRUE);
}
TERM_PUBLIC int
MP_set_font(font)
char *font;
{
if (*font) {
size_t sep = strcspn(font, ",");
strncpy(MP_fontname, font, sep);
MP_fontname[sep] = NUL;
sscanf(&(font[sep + 1]), "%lf", &MP_fontsize);
if (MP_fontsize < 5)
MP_fontsize = 5.0;
if (MP_fontsize >= 100)
MP_fontsize = 99.99;
/* */
MP_fontchanged = TRUE;
} else {
MP_fontchanged = FALSE;
}
return TRUE;
}
TERM_PUBLIC void
MP_reset()
{
fputs("end.\n", gpoutfile);
}
TERM_PUBLIC void
MP_boxfill(sty, x1, y1, wd, ht)
int sty;
unsigned int x1, y1, wd, ht;
{
/* for now simply clear box if sty <= 0, do nothing otherwise */
if (MP_inline)
MP_endline();
if (sty <= 0)
fprintf(gpoutfile, "\
fill (%da,%db)--(%da,%db)--(%da,%db)--(%da,%db)--cycle withcolor background;\n",
x1, y1, x1 + wd, y1, x1 + wd, y1 + ht, x1, y1 + ht);
}
#endif /* TERM_BODY */
#ifdef TERM_TABLE
TERM_TABLE_START(mp_driver)
"mp", "MetaPost plotting standard",
MP_XMAX, MP_YMAX, MP_VCHAR, MP_HCHAR,
MP_VTIC, MP_HTIC, MP_options, MP_init, MP_reset,
MP_text, null_scale, MP_graphics, MP_move, MP_vector,
MP_linetype, MP_put_text, MP_text_angle,
MP_justify_text, MP_point, MP_arrow, MP_set_font, MP_pointsize,
0, 0, 0, MP_boxfill, MP_linewidth
TERM_TABLE_END(mp_driver)
#undef LAST_TERM
#define LAST_TERM mp_driver
#endif /* TERM_TABLE */
#endif /* TERM_PROTO_ONLY */
#ifdef TERM_HELP
START_HELP(mp)
"1 mp",
"?commands set terminal mpost",
"?set terminal mp",
"?set term mp",
"?terminal mp",
"?term mp",
"?mp",
"?metapost",
"",
" The `mp` driver produces output intended to be input to the Metapost program.",
" Running Metapost on the file creates EPS files containing the plots. By",
" default, Metapost passes all text through TeX. This has the advantage of",
" allowing essentially any TeX symbols in titles and labels.",
"",
" The `mp` terminal is selected with a command of the form",
" set term mp {color} {solid} {notex} {mag <magsize>} {\"<name>\"} {<size>}",
" The option `color` causes lines to be drawn in color (on a printer or display",
" that supports it), `monochrome` (or nothing) selects black lines. The option",
" `solid` draws solid lines, while `dashed` (or nothing) selects lines with",
" different patterns of dashes. If `solid` is selected but `color` is not,",
" nearly all lines will be identical. This may occasionally be useful, so it is",
" allowed.",
"",
" The option `notex` bypasses TeX entirely, therefore no TeX code can be used in",
" labels under this option. This is intended for use on old plot files or files",
" that make frequent use of common characters like `$` and `%` that require",
" special handling in TeX.",
"",
" Changing font sizes in TeX has no effect on the size of mathematics, and there",
" is no foolproof way to make such a change, except by globally setting a",
" magnification factor. This is the purpose of the `magnification` option. It",
" must be followed by a scaling factor. All text (NOT the graphs) will be scaled",
" by this factor. Use this if you have math that you want at some size other",
" than the default 10pt. Unfortunately, all math will be the same size, but see",
" the discussion below on editing the MP output. `mag` will also work under",
" `notex` but there seems no point in using it as the font size option (below)",
" works as well.",
"",
" A name in quotes selects the font that will be used when no explicit font is",
" given in a `set label` or `set title`. A name recognized by TeX (a TFM file",
" exists) must be used. The default is \"cmr10\" unless `notex` is selected,",
" then it is \"pcrr8r\" (Courier). Even under `notex`, a TFM file is needed by",
" Metapost. The file `pcrr8r.tfm` is the name given to Courier in LaTeX's psnfss",
" package. If you change the font from the `notex` default, choose a font that",
" matches the ASCII encoding at least in the range 32-126. `cmtt10` almost",
" works, but it has a nonblank character in position 32 (space).",
"",
" The size can be any number between 5.0 and 99.99. If it is omitted, 10.0 is",
" used. It is advisable to use `magstep` sizes: 10 times an integer or",
" half-integer power of 1.2, rounded to two decimals, because those are the most",
" available sizes of fonts in TeX systems.",
"",
" All the options are optional. If font information is given, it must be at the",
" end, with size (if present) last. The size is needed to select a size for the",
" font, even if the font name includes size information. For example,",
" `set term mp \"cmtt12\"` selects cmtt12 shrunk to the default size 10. This",
" is probably not what you want or you would have used cmtt10.",
"",
" The following common ascii characters need special treatment in TeX:",
" $, &, #, %, _; |, <, >; ^, ~, \\, {, and }",
" The five characters $, #, &, _, and % can simply be escaped, e.g., `\\$`.",
" The three characters <, >, and | can be wrapped in math mode, e.g., `$<$`.",
" The remainder require some TeX work-arounds. Any good book on TeX will give",
" some guidance.",
"",
" If you type your labels inside double quotes, backslashes in TeX code need to",
" be escaped (doubled). Using single quotes will avoid having to do this, but",
" then you cannot use `\\n` for line breaks. As of this writing, version 3.7 of",
" gnuplot processess titles given in a `plot` command differently than in other",
" places, and backslashes in TeX commands need to be doubled regardless of the",
" style of quotes.",
"",
" Metapost pictures are typically used in TeX documents. Metapost deals with",
" fonts pretty much the same way TeX does, which is different from most other",
" document preparation programs. If the picture is included in a LaTeX document",
" using the graphics package, or in a plainTeX document via epsf.tex, and then",
" converted to PostScript with dvips (or other dvi-to-ps converter), the text in",
" the plot will usually be handled correctly. However, the text may not appear",
" if you send the Metapost output as-is to a PostScript interpreter.",
"",
"2 Metapost Instructions",
"?commands set terminal mp detailed",
"?set terminal mp detailed",
"?set term mp detailed",
"?mp detailed",
"?metapost detailed",
"",
" - Set your terminal to Metapost, e.g.:",
" set terminal mp mono \"cmtt12\" 12",
"",
" - Select an output-file, e.g.:",
" set output \"figure.mp\"",
"",
" - Create your pictures. Each plot (or multiplot group) will generate a",
" separate Metapost beginfig...endfig group. Its default size will be 5 by 3",
" inches. You can change the size by saying `set size 0.5,0.5` or whatever",
" fraction of the default size you want to have.",
"",
" - Quit gnuplot.",
"",
" - Generate EPS files by running Metapost on the output of gnuplot:",
" mpost figure.mp OR mp figure.mp",
" The name of the Metapost program depends on the system, typically `mpost` for",
" a Unix machine and `mp` on many others. Metapost will generate one EPS file",
" for each picture.",
"",
" - To include your pictures in your document you can use the graphics package",
" in LaTeX or epsf.tex in plainTeX:",
" \\usepackage{graphics} % LaTeX",
" \\input epsf.tex % plainTeX",
" If you use a driver other than dvips for converting TeX DVI output to PS, you",
" may need to add the following line in your LaTeX document:",
" \\DeclareGraphicsRule{*}{eps}{*}{}",
" Each picture you made is in a separate file. The first picture is in, e.g.,",
" figure.0, the second in figure.1, and so on.... To place the third picture in",
" your document, for example, all you have to do is:",
" \\includegraphics{figure.2} % LaTeX",
" \\epsfbox{figure.2} % plainTeX",
"",
" The advantage, if any, of the mp terminal over a postscript terminal is",
" editable output. Considerable effort went into making this output as clean as",
" possible. For those knowledgeable in the Metapost language, the default line",
" types and colors can be changed by editing the arrays `lt[]` and `col[]`.",
" The choice of solid vs dashed lines, and color vs black lines can be change by",
" changing the values assigned to the booleans `dashedlines` and `colorlines`.",
" If the default `tex` option was in effect, global changes to the text of",
" labels can be achieved by editing the `vebatimtex...etex` block. In",
" particular, a LaTeX preamble can be added if desired, and then LaTeX's",
" built-in size changing commands can be used for maximum flexibility. Be sure",
" to set the appropriate MP configuration variable to force Metapost to run",
" LaTeX instead of plainTeX."
END_HELP(mp)
#endif /* TERM_HELP */
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