/usr/share/doc/plplot-doc/html/plvec1.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>&#13;      plvec1: Vector plot, general 1-d mapping for
      Fortran 77
    </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 Fortran 77 API for PLplot"
HREF="api-fortran-77.html"><LINK
REL="PREVIOUS"
TITLE="
      plvec0: Vector plot, identity mapping for Fortran 77
    "
HREF="plvec0.html"><LINK
REL="NEXT"
TITLE="
      plvec2: Vector plot, general 2-d mapping for
      Fortran 77
    "
HREF="plvec2.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="plvec0.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 22. The Specialized Fortran 77 API for PLplot</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="plvec2.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="sect1"
><H3
CLASS="sect1"
><A
NAME="plvec1"
><CODE
CLASS="function"
>plvec1</CODE
>: Vector plot, general 1-d mapping for
      Fortran 77</A
></H3
><P
>&#13;      <DIV
CLASS="funcsynopsis"
><P
></P
><A
NAME="AEN14908"
></A
><TABLE
CLASS="funcprototype"
><TR
><TD
><CODE
CLASS="FUNCDEF"
>&#13;	    plvec1
	  </CODE
>(u, v, nx, ny, scale, xg, yg);</TD
></TR
></TABLE
><P
></P
></DIV
>
    </P
><P
>&#13;      Draws a vector plot of the data in
      <TT
CLASS="literal"
>(<CODE
CLASS="parameter"
>u</CODE
>[<CODE
CLASS="parameter"
>nx</CODE
>][<CODE
CLASS="parameter"
>ny</CODE
>], <CODE
CLASS="parameter"
>v</CODE
>[<CODE
CLASS="parameter"
>nx</CODE
>][<CODE
CLASS="parameter"
>ny</CODE
>])</TT
>.
    </P
><TABLE
CLASS="variablelist"
><TR
><TD
><DL
><DT
><CODE
CLASS="parameter"
>u, v</CODE
>
	  (<TT
CLASS="literal"
>PLFLT **</TT
>, input)</DT
><DD
><P
>&#13;	    Pointer to a pair of vectored two-dimensional arrays containing
	    the x and y components of the vector to be plotted.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>nx, ny</CODE
>
	  (<TT
CLASS="literal"
>PLINT</TT
>, input)</DT
><DD
><P
>&#13;	    Physical dimensions of the arrays
	    <TT
CLASS="literal"
><CODE
CLASS="parameter"
>u</CODE
></TT
> and
	    <TT
CLASS="literal"
><CODE
CLASS="parameter"
>v</CODE
></TT
>.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>scale</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    Parameter to control the scaling factor of the vectors for plotting.
	    If <TT
CLASS="literal"
><CODE
CLASS="parameter"
>scale</CODE
> = 0</TT
> then
	    the scaling factor is automatically calculated for the data.
	    If <TT
CLASS="literal"
><CODE
CLASS="parameter"
>scale</CODE
> &#60; 0</TT
> then
	    the scaling factor is automatically calculated for the data and
	    then multiplied by <TT
CLASS="literal"
>-<CODE
CLASS="parameter"
>scale</CODE
></TT
>.
	    If <TT
CLASS="literal"
><CODE
CLASS="parameter"
>scale</CODE
> &#62; 0</TT
> then
	    the scaling factor is set to <TT
CLASS="literal"
><CODE
CLASS="parameter"
>scale</CODE
></TT
>.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>xg, yg</CODE
>
	  (<TT
CLASS="literal"
>PLFLT *</TT
>, input)</DT
><DD
><P
>&#13;	    Pointers to arrays which specify the transformation from array
	    indices to world coordinates.  These must be one-dimensional
	    arrays, used for a transformation of the form:
	    <TT
CLASS="literal"
>tx</TT
> = <TT
CLASS="literal"
>f(x)</TT
>,
	    <TT
CLASS="literal"
>ty</TT
> = <TT
CLASS="literal"
>f(y)</TT
>.  Function
	    values at locations between grid points are obtained via linear
	    interpolation.
	  </P
></DD
></DL
></TD
></TR
></TABLE
><P
>&#13;      NOTE: this function is intended for use from a Fortran 77 caller only.
      The C user should instead call <A
HREF="plvect.html"
><CODE
CLASS="function"
>plvect</CODE
></A
> using the built-in
      transformation function <CODE
CLASS="function"
>pltr1</CODE
> for the same
      capability.
    </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="plvec0.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="plvec2.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><CODE
CLASS="function"
>plvec0</CODE
>: Vector plot, identity mapping for Fortran 77</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="api-fortran-77.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><CODE
CLASS="function"
>plvec2</CODE
>: Vector plot, general 2-d mapping for
      Fortran 77</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
plplot-doc 5.9.9-2ubuntu2 / usr / share / doc / plplot-doc / html / plvec1.html
