plplot-doc 5.9.9-5 / usr / share / doc / plplot-doc / html / pltr0.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>&#13;      pltr0: Identity transformation for grid to world
      mapping
    </TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="The PLplot Plotting Library"
HREF="index.html"><LINK
REL="UP"
TITLE="The Specialized C API for PLplot"
HREF="api-c.html"><LINK
REL="PREVIOUS"
TITLE="
      plsfile: Set output file handle
    "
HREF="plsfile.html"><LINK
REL="NEXT"
TITLE="
      pltr1: Linear interpolation for grid to world
      mapping using singly dimensioned coord arrays
    "
HREF="pltr1.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="stylesheet.css"></HEAD
><BODY
CLASS="sect1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>The PLplot Plotting Library: Programmer's Reference Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="plsfile.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 20. The Specialized C API for PLplot</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="pltr1.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="sect1"
><H3
CLASS="sect1"
><A
NAME="pltr0"
><CODE
CLASS="function"
>pltr0</CODE
>: Identity transformation for grid to world
      mapping</A
></H3
><P
>&#13;      <DIV
CLASS="funcsynopsis"
><P
></P
><A
NAME="AEN13973"
></A
><TABLE
CLASS="funcprototype"
><TR
><TD
><CODE
CLASS="FUNCDEF"
>&#13;	    pltr0
	  </CODE
>(x, y, tx, ty, pltr_data);</TD
></TR
></TABLE
><P
></P
></DIV
>
    </P
><P
>&#13;      Identity transformation for grid to world mapping.
      This routine can be used both for <A
HREF="plcont.html"
><CODE
CLASS="function"
>plcont</CODE
></A
> and <A
HREF="plshade.html"
><CODE
CLASS="function"
>plshade</CODE
></A
>.
      See also <A
HREF="contour-plots.html#contour-plots-c"
>the Section called <I
>Contour Plots from C</I
> in Chapter 3</A
> and
      <A
HREF="contour-plots.html#shade-plots-c"
>the Section called <I
>Shade Plots from C</I
> in Chapter 3</A
>.
    </P
><TABLE
CLASS="variablelist"
><TR
><TD
><DL
><DT
><CODE
CLASS="parameter"
>x</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    X-position in grid coordinates.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>y</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    Y-position in grid coordinates.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>tx</CODE
>
	  (<TT
CLASS="literal"
>PLFLT *</TT
>, output)</DT
><DD
><P
>&#13;	    X-position in world coordinates.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>ty</CODE
>
	  (<TT
CLASS="literal"
>PLFLT *</TT
>, output)</DT
><DD
><P
>&#13;	    Y-position in world coordinates.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>pltr_data</CODE
>
	  (<TT
CLASS="literal"
>PLPointer</TT
>, input)</DT
><DD
><P
>&#13;	    Pointer to additional input data that is passed as an argument
	    to <A
HREF="plcont.html"
><CODE
CLASS="function"
>plcont</CODE
></A
> or <A
HREF="plshade.html"
><CODE
CLASS="function"
>plshade</CODE
></A
> and then on to the grid to world
	    transformation routine.
	  </P
></DD
></DL
></TD
></TR
></TABLE
><P
>&#13;      This function is currently available in C, C++, Ocaml, Perl, Python 
      and Tcl.
    </P
><P
> 
      This function is not used in any examples.
    </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
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><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="plsfile.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="pltr1.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><CODE
CLASS="function"
>plsfile</CODE
>: Set output file handle</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="api-c.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><CODE
CLASS="function"
>pltr1</CODE
>: Linear interpolation for grid to world
      mapping using singly dimensioned coord arrays</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>

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