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mtg.plot3d and tk_pfn.graph accept the option fit=1.
If it is set to one, (max+min)/2 is moved to the center of the z-axis.

\input texinfo
@def@colon{:}

@iftex
@catcode`@#=6
@def@b#1{{@bf@gt #1}}
@catcode`@#=@other
@end iftex
@overfullrule=0pt
@setfilename asir-contrib-mk_graph
@settitle mk_graph Manual
@titlepage
@title mk_graph Manual
@subtitle Edition : 2009.02.12
@author OpenXM.org
@end titlepage

@synindex vr fn
@node Top,, (dir), (dir)

@menu
* Function Manual::
* Index::
@end menu

@node Function Manual,,, Top
@chapter Function Manual

@menu
* Outline::
* Notation::
* Functions::
@end menu

@node Outline,,, Function Manual
@section Outline



@node Notation,,,Function Manual
@section Notation

@node Functions,,, Function Manual
@section Functions

@menu
* mtg.plot3d::
* mtp.parametric_plot3d::
@end menu

@node intersect,,, Functions

@node mtg.plot3d,,, Functions
@subsection @code{mtg.plot3d}
@findex mtg.plot3d

@table @t
@item mtg.plot3d(@var{formula})
:: Draw a graph of @var{formula} 
@item mtg.plot3d(@var{formula} | @var{options})
:: Draw a graph of @var{formula}. Optional arguments are described below.
@end table

@table @var
@item return
 List
@item formula
Expression or quote data. It should be a function in @code{x}, @code{y}.
@item optinal arguments
@table @t
 @item domain
 List.  [[xmin,xmax],[ymin,ymax]] 
 @item mesh
 Natural number. Division number to mesh the region. 
 @item fit
 When it is 1, (max+min)/2 is moved to the orgin in z.
@end table
@end table

@itemize @bullet
@item  Details have not been written. See examples.
@end itemize

@example
[1210] import("mt_graph.rr");
[1211] mtg.test2();
@end example


@example
[1210] import("mt_graph.rr");
[1211] mtg.plot3d(x^2-y^2);
@end example

@example
[1210] import("mt_graph.rr");
[1211] mtg.plot3d(x^2-y^2 | domain=[[-1,1],[1,1]]);
@end example

@example
[1210] import("mt_graph.rr");
[1211] def myfunc(X,Y) @{ if (X*Y < 0) return 0; else 1;@}
[1212] mtg.plot3d(quote(myfunc(x,y)*x*y));
@end example




@node mtp.parametric_plot3d,,, Functions
@subsection @code{mtp.parametric_plot3d}
@findex mtp.parametric_plot3d

@table @t
@item mtp.parametric_plot3d(@var{formula})
:: Draw a graph of @var{formula}
@item mtp.parametric_plot3d(@var{formula} | @var{options})
:: Draw a graph of @var{formula}. Optinal arguments are described below.
@end table

@table @var
@item return
 List
@item formula
Expression or quote data. It should be a function in @code{s}, @code{t}.
@item optinal arguments
@table @t
 @item domain
 List.  [[xmin,xmax],[ymin,ymax]] 
 @item mesh
 Natural number. Division number to mesh the region. 
 @item fitting
 If it is set to 0, then automatic fitting to the z-direction is not done.
@end table
@end table

@itemize @bullet
@item  Details have not been written. See examples.
@end itemize

@example
[1210] import("mt_graph.rr");
[1211] mtp.test5();   /*  Klein bottle (8 figure) */
@end example


@example
[1210] import("mt_graph.rr");
[1211] mtp.parametric_plot3d([s,t,s^2-t^2]);
@end example


@example
[1210] import("mt_graph.rr");
[1211] def myfunc(X,Y) @{ if (X*Y < 0) return 0; else 1;@}
[1212] mtp.parametric_plot3d([s,t,quote(myfunc(s,t)*s*t) | fitting=0);
@end example




@node Index,,, Top
@unnumbered Index
@printindex fn
@printindex cp
@iftex
@vfill @eject
@end iftex
@summarycontents
@contents

@bye