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<A HREF="toc.html">Contents</A>
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<A HREF="823Explodingpieslices.html">Previous</A>
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<A HREF="825Specifyingslicecolorsandusingthemes.html">Next</A>
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<HR NOSHADE>
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<H3><A NAME="8_2_4">8.2.4 Specifying and adjusting labels on pie plots</A>
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</H3>
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<P> By default the values shown just outside the pie for each slice are
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the percentage value for each slice. If you instead wanted the absolute
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value you would just have to use the <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELTYPE">
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SetLabelType()</A> method. So to use the absolute value you would call</P>
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<P><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
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$pieplot</FONT><FONT color="#007700">-></FONT><FONT color="#0000BB">
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SetLabelType</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
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"PIE_VALUE_ABS"</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB">
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</FONT></FONT></CODE></DIV></P>
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<P></P>
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<P> Furthermore you could enhance the formatting of the value by either
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using a printf() style format string (using <A href="../ref/DisplayValue.html#_DISPLAYVALUE_SETFORMAT">
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SetFormat()</A> ) or by providing a formatting function callback (using
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<A href="../ref/DisplayValue.html#_DISPLAYVALUE_SETFORMATCALLBACK">
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SetFormatCallback()</A> ) for doing more advanced formatting.</P>
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<P> You can also adjust the position of the labels by means of the <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELPOS">
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PiePlot::SetLabelPos()</A> method. The argument to this method is
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either the fraction of the radius or the string 'auto'. In the latter
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case JpGraph automatically determines the best position and the the
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first case The following example illustrates this<DIV class="example">
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<BR> <A href="exframes/frame_pieex8.html" target="blank"><IMG border="0" HEIGHT="200"
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src="img/img/img/img/img/img/pieex8.png" WIDTH="250"></A>
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<BR><B>Figure 131:</B> Example of adjusting the position of the labels
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for the slices <A href="exframes/frame_pieex8.html" target="blank">
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[src]</A>
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<P></P>
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</DIV></P>
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<P></P>
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<P> If this formatting is not enough you can also "manually" specify the
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labels for each slice individually. You do this by using the <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELS">
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PiePLot::SetLabels()</A> method. This will let you specify individual
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text strings for each label. In each specification you can also add a
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printf() formatting specification for a number. The number passed on
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will be either the absolute value for the slice or the percentage value
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depending on what was specified in the call to <A href="../ref/PiePlot.html#_PIEPLOT_SETLABELTYPE">
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SetLabelType()</A></P>
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<P> The SetLabels() method can also take a second parameter, the label
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position parameter. This is just a shortcut to the SetLabelPos() as
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described above. By default the position will be set to 'auto' if not
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explicitely specified.<DIV class="note"><B>Note:</B> The alignment of
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the labels will be different depending on whether they are inside or
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outside the pie. When inside the center of the strings will be aligned
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with the center of the slice at the specified fraction of the radius.
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When positioned outside the alignment will depend on the angle to avoid
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that the labels inadvertely writes over the pie.</DIV></P>
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<A HREF="823Explodingpieslices.html">Previous</A>
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<A HREF="825Specifyingslicecolorsandusingthemes.html">Next</A>
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