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  28  <H3><A NAME="8_1_2">8.1.2 Displaying the values for each data point</A></H3>
  29  <P> As a final easy modification we can enable the display of the data
  30   value above each data point. The value is represented by the 'value'
  31   property in the plot. (You can read more about the possibilities of the
  32   <A href="../ref/DisplayValue.html#_C_DISPLAYVALUE"> display value</A>
  33   in the class reference.)</P>
  34  <P> To enable the display of the value you just need to call the Show()
  35   method of the value as in<DIV class="phpscript"><CODE><FONT color="#000000">
  36   <FONT color="#0000BB">&nbsp;$lineplot</FONT><FONT color="#007700">-&gt;</FONT><FONT
  37  color="#0000BB">value</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
  38  Show</FONT><FONT color="#007700">()</FONT><FONT color="#0000BB"></FONT></FONT>
  39  </CODE></DIV></P>
  40  <P> Adding that line to the previous line plot would give the result
  41   shown below.<DIV class="example">
  42  <BR> <A href="exframes/frame_example3.3.html" target="blank"><IMG border="0"
  43  HEIGHT="200"  src="img/example3.3.png" WIDTH="300"></A>
  44  <BR><B>Figure 7:</B> Displaying the value for each data point <A href="exframes/frame_example3.3.html"
  45  target="blank">[src]</A>&nbsp;
  46  <P></P>
  47  </DIV></P>
  48  <P> We can of course change both color, font and format of the displayed
  49   value. So for example if we wanted the display values to be dark red,
  50   use a bold font and have a '$' in front we need to add the lines<DIV class="phpscript">
  51  <CODE><FONT color="#000000"> <FONT color="#0000BB">&nbsp;$lineplot</FONT><FONT
  52  color="#007700">-&gt;</FONT><FONT color="#0000BB">value</FONT><FONT color="#007700">
  53  -&gt;</FONT><FONT color="#0000BB">SetColor</FONT><FONT color="#007700">(</FONT><FONT
  54  color="#DD0000">&quot;darkred&quot;</FONT><FONT color="#007700">);
  55  <BR></FONT><FONT color="#0000BB">$lineplot</FONT><FONT color="#007700">
  56  -&gt;</FONT><FONT color="#0000BB">value</FONT><FONT color="#007700">-&gt;</FONT><FONT
  57  color="#0000BB">SetFont</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">
  58  FF_FONT1</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">
  59  FS_BOLD</FONT><FONT color="#007700">);
  60  <BR></FONT><FONT color="#0000BB">$lineplot</FONT><FONT color="#007700">
  61  -&gt;</FONT><FONT color="#0000BB">value</FONT><FONT color="#007700">-&gt;</FONT><FONT
  62  color="#0000BB">SetFormat</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
  63  &quot;$&nbsp;%0.1f&quot;</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
  64  </FONT></CODE></DIV></P>
  65  <P> This would then result in the following image<DIV class="example">
  66  <BR> <A href="exframes/frame_example3.4.html" target="blank"><IMG border="0"
  67  HEIGHT="200"  src="img/example3.4.png" WIDTH="300"></A>
  68  <BR><B>Figure 8:</B> Making the display values a little bit more
  69   interesting <A href="exframes/frame_example3.4.html" target="blank">
  70  [src]</A>&nbsp;
  71  <P></P>
  72  </DIV></P>
  73  <P><DIV class="note"><B>Note:</B> You can achieve more advanced
  74   formatting by using not just the printf() style format string by a
  75   format callback function. This could allow you to change the displayed
  76   value with more advanced formatting such as displaying money values
  77   with &quot;,&quot; to separate thousands.</DIV></P>
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