Subversion-Projekte lars-tiefland.php_share

Revision

Blame | Letzte Änderung | Log anzeigen | RSS feed 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-iso-8859-1">
<LINK REL="Start" HREF="index.html">
<LINK REL="Contents" HREF="toc.html">
<LINK REL="Prev" HREF="823Explodingpieslices.html">
<LINK REL="Next" HREF="825Specifyingslicecolorsandusingthemes.html">
<STYLE TYPE="text/css"><!--
BODY { font-family: serif }
H1 { font-family: sans-serif }
H2 { font-family: sans-serif }
H3 { font-family: sans-serif }
H4 { font-family: sans-serif }
H5 { font-family: sans-serif }
H6 { font-family: sans-serif }
SUB { font-size: smaller }
SUP { font-size: smaller }
PRE { font-family: monospace }
A { text-decoration: none }
--></STYLE>
</HEAD>
<BODY>
<A HREF="toc.html">Contents</A>
<A HREF="823Explodingpieslices.html">Previous</A>
<A HREF="825Specifyingslicecolorsandusingthemes.html">Next</A>
<HR NOSHADE>
<H3><A NAME="8_2_4">8.2.4 Specifying and adjusting labels on pie plots</A>
</H3>
<P> By default the values shown just outside the pie for each slice are
 the percentage value for each slice. If you instead wanted the absolute
 value you would just have to use the <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELTYPE">
 SetLabelType()</A> method. So to use the absolute value you would call</P>
<P><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
&nbsp;$pieplot</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
SetLabelType</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
&quot;PIE_VALUE_ABS&quot;</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB">
</FONT></FONT></CODE></DIV></P>
<P></P>
<P> Furthermore you could enhance the formatting of the value by either
 using a printf() style format string (using <A href="../ref/DisplayValue.html#_DISPLAYVALUE_SETFORMAT">
 SetFormat()</A> ) or by providing a formatting function callback (using
 <A href="../ref/DisplayValue.html#_DISPLAYVALUE_SETFORMATCALLBACK">
 SetFormatCallback()</A> ) for doing more advanced formatting.</P>
<P> You can also adjust the position of the labels by means of the <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELPOS">
 PiePlot::SetLabelPos()</A> method. The argument to this method is
 either the fraction of the radius or the string 'auto'. In the latter
 case JpGraph automatically determines the best position and the the
 first case The following example illustrates this<DIV class="example">
<BR> <A href="exframes/frame_pieex8.html" target="blank"><IMG border="0" HEIGHT="200"
      src="img/img/img/img/img/img/pieex8.png" WIDTH="250"></A>
<BR><B>Figure 131:</B> Example of adjusting the position of the labels
 for the slices <A href="exframes/frame_pieex8.html" target="blank">
[src]</A>&nbsp;
<P></P>
</DIV></P>
<P></P>
<P> If this formatting is not enough you can also &quot;manually&quot; specify the
 labels for each slice individually. You do this by using the <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELS">
 PiePLot::SetLabels()</A> method. This will let you specify individual
 text strings for each label. In each specification you can also add a
 printf() formatting specification for a number. The number passed on
 will be either the absolute value for the slice or the percentage value
 depending on what was specified in the call to <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELTYPE">
 SetLabelType()</A></P>
<P> The SetLabels() method can also take a second parameter, the label
 position parameter. This is just a shortcut to the SetLabelPos() as
 described above. By default the position will be set to 'auto' if not
 explicitely specified.<DIV class="note"><B>Note:</B> The alignment of
 the labels will be different depending on whether they are inside or
 outside the pie. When inside the center of the strings will be aligned
 with the center of the slice at the specified fraction of the radius.
 When positioned outside the alignment will depend on the angle to avoid
 that the labels inadvertely writes over the pie.</DIV></P>
<HR NOSHADE>
<A HREF="toc.html">Contents</A>
<A HREF="823Explodingpieslices.html">Previous</A>
<A HREF="825Specifyingslicecolorsandusingthemes.html">Next</A>
</BODY>
</HTML>