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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;      plaxes: Draw a box with axes, etc. with arbitrary
      origin
    </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 Common API for PLplot"
HREF="api.html"><LINK
REL="PREVIOUS"
TITLE="
      plarc: Draw a circular or elliptical arc
    "
HREF="plarc.html"><LINK
REL="NEXT"
TITLE="
      plbin: Plot a histogram from binned data
    "
HREF="plbin.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="plarc.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 19. The Common API for PLplot</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="plbin.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="sect1"
><H3
CLASS="sect1"
><A
NAME="plaxes"
><CODE
CLASS="function"
>plaxes</CODE
>: Draw a box with axes, etc. with arbitrary
      origin</A
></H3
><P
>&#13;      <DIV
CLASS="funcsynopsis"
><P
></P
><A
NAME="AEN3896"
></A
><TABLE
CLASS="funcprototype"
><TR
><TD
><CODE
CLASS="FUNCDEF"
>&#13;	    plaxes
	  </CODE
>(x0, y0, xopt, xtick, nxsub, yopt, ytick, nysub);</TD
></TR
></TABLE
><P
></P
></DIV
>
    </P
><P
>&#13;      Draws a box around the currently defined viewport with arbitrary
      world-coordinate origin specified by
      <TT
CLASS="literal"
><CODE
CLASS="parameter"
>x0</CODE
></TT
> and
      <TT
CLASS="literal"
><CODE
CLASS="parameter"
>y0</CODE
></TT
>
      and labels it with world coordinate values appropriate to the
      window.  Thus <A
HREF="plaxes.html"
><CODE
CLASS="function"
>plaxes</CODE
></A
> should only be called after defining both
      viewport and window.  The character strings
      <TT
CLASS="literal"
><CODE
CLASS="parameter"
>xopt</CODE
></TT
> and
      <TT
CLASS="literal"
><CODE
CLASS="parameter"
>yopt</CODE
></TT
> specify how the box
      should be drawn as described below.  If ticks and/or subticks are to
      be drawn for a particular axis, the tick intervals and number of
      subintervals may be specified explicitly, or they may be defaulted by
    setting the appropriate arguments to zero. </P
><TABLE
CLASS="variablelist"
><TR
><TD
><DL
><DT
><CODE
CLASS="parameter"
>x0</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    World X coordinate of origin.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>y0</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    World Y coordinate of origin.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>xopt</CODE
>
	  (<TT
CLASS="literal"
>const char *</TT
>, input)</DT
><DD
><P
>&#13;	    Pointer to character string specifying options for horizontal
	    axis.  The string can include any combination of the following
	    letters (upper or lower case) in any order:
	    <P
></P
><UL
><LI
><P
>&#13;		  <TT
CLASS="literal"
>a</TT
>: Draws axis, X-axis is horizontal
		  line (<TT
CLASS="literal"
>y=0</TT
>), and Y-axis is vertical
		  line (<TT
CLASS="literal"
>x=0</TT
>).
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>b</TT
>: Draws bottom (X) or left (Y) edge
		  of frame.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>c</TT
>: Draws top (X) or right (Y) edge of
		  frame.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>d</TT
>: Plot labels as date / time. 
		  Values are assumed to be seconds since the epoch 
		  (as used by gmtime).
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>f</TT
>:  Always use fixed point numeric labels.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>g</TT
>: Draws a grid at the major tick
		  interval.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>h</TT
>: Draws a grid at the minor tick
		  interval.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>i</TT
>: Inverts tick marks, so they are
		  drawn outwards, rather than inwards.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>l</TT
>: Labels axis logarithmically.  This
		  only affects the labels, not the data, and so it is
		  necessary to compute the logarithms of data points before
		  passing them to any of the drawing routines.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>m</TT
>: Writes numeric labels at major tick
		  intervals in the unconventional location (above box for
		  X, right of box for Y).
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>n</TT
>: Writes numeric labels at major tick
		  intervals in the conventional location (below box for X,
		  left of box for Y).
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>o</TT
>: Use custom labeling function to
		  generate axis label text.  The custom labeling function
		  can be defined with the plslabelfuncplslabelfunc; command.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>s</TT
>: Enables subticks between major
		  ticks, only valid if <TT
CLASS="literal"
>t</TT
> is also
		  specified.
		</P
></LI
><LI
><P
>&#13;		  <TT
CLASS="literal"
>t</TT
>: Draws major ticks.
		</P
></LI
></UL
>
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>xtick</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    World coordinate interval between major ticks on the x axis.
	    If it is set to zero, PLplot automatically generates a suitable
	    tick interval.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>nxsub</CODE
>
	  (<TT
CLASS="literal"
>PLINT</TT
>, input)</DT
><DD
><P
>&#13;	    Number of subintervals between major x axis ticks for minor
	    ticks.  If it is set to zero, PLplot automatically generates a
	    suitable minor tick interval.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>yopt</CODE
>
	  (<TT
CLASS="literal"
>const char *</TT
>, input)</DT
><DD
><P
>&#13;	    Pointer to character string specifying options for vertical
	    axis.  The string can include any combination of the letters
	    defined above for
	    <TT
CLASS="literal"
><CODE
CLASS="parameter"
>xopt</CODE
></TT
>, and in addition
	    may contain:
	    <P
></P
><UL
><LI
><P
>&#13;		  <TT
CLASS="literal"
>v</TT
>: Write numeric labels for vertical
		  axis parallel to the base of the graph, rather than
		  parallel to the axis.
		</P
></LI
></UL
>
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>ytick</CODE
>
	  (<TT
CLASS="literal"
>PLFLT</TT
>, input)</DT
><DD
><P
>&#13;	    World coordinate interval between major ticks on the y axis.
	    If it is set to zero, PLplot automatically generates a suitable
	    tick interval.
	  </P
></DD
><DT
><CODE
CLASS="parameter"
>nysub</CODE
>
	  (<TT
CLASS="literal"
>PLINT</TT
>, input)</DT
><DD
><P
>&#13;	    Number of subintervals between major y axis ticks for minor
	    ticks.  If it is set to zero, PLplot automatically generates a
	    suitable minor tick interval.
	  </P
></DD
></DL
></TD
></TR
></TABLE
><P
>&#13;      Redacted form: 
      <P
></P
><UL
><LI
><P
>&#13;	    General: <CODE
CLASS="function"
>plaxes(x0, y0, xopt, xtick, nxsub, yopt, ytick, nysub)</CODE
>
	  </P
></LI
><LI
><P
>&#13;	    Perl/PDL: <CODE
CLASS="function"
>plaxes(x0, y0, xtick, nxsub, ytick, nysub, xopt, yopt)</CODE
>
	  </P
></LI
></UL
>
    </P
><P
>&#13;      This function is not used in any examples.
    </P
></DIV
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><HR
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ALIGN="left"
VALIGN="top"
><A
HREF="plarc.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="plbin.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><CODE
CLASS="function"
>plarc</CODE
>: Draw a circular or elliptical arc</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="api.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><CODE
CLASS="function"
>plbin</CODE
>: Plot a histogram from binned data</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>