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<H3><A NAME="7_1_2">7.1.2 Displaying the values for each data point</A></H3>
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<P> As a final easy modification we can enable the display of the data
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value above each data point. The value is represented by the 'value'
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property in the plot. (You can read more about the possibilities of the
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<A href="../ref/DisplayValue.html#_C_DISPLAYVALUE"> display value</A>
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in the class reference.)</P>
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<P> To enable the display of the value you just need to call the Show()
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method of the value as in<DIV class="phpscript"><CODE><FONT color="#000000">
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<FONT color="#0000BB"> $lineplot</FONT><FONT color="#007700">-></FONT><FONT
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color="#0000BB">value</FONT><FONT color="#007700">-></FONT><FONT color="#0000BB">
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Show</FONT><FONT color="#007700">()</FONT><FONT color="#0000BB"></FONT></FONT>
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</CODE></DIV></P>
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<P> Adding that line to the previous line plot would give the result
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shown below.<DIV class="example">
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<BR> <A href="exframes/frame_example3.3.html" target="blank"><IMG border="0"
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HEIGHT="200" src="img/img/img/img/img/img/example3.3.png" WIDTH="300"></A>
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<BR><B>Figure 8:</B> Displaying the value for each data point <A href="exframes/frame_example3.3.html"
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target="blank">[src]</A>
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<P></P>
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</DIV></P>
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<P> We can of course change both color, font and format of the displayed
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value. So for example if we wanted the display values to be dark red,
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use a bold font and have a '$' in front we need to add the lines<DIV class="phpscript">
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<CODE><FONT color="#000000"> <FONT color="#0000BB"> $lineplot</FONT><FONT
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color="#007700">-></FONT><FONT color="#0000BB">value</FONT><FONT color="#007700">
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-></FONT><FONT color="#0000BB">SetColor</FONT><FONT color="#007700">(</FONT><FONT
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color="#DD0000">"darkred"</FONT><FONT color="#007700">);
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<BR></FONT><FONT color="#0000BB">$lineplot</FONT><FONT color="#007700">
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-></FONT><FONT color="#0000BB">value</FONT><FONT color="#007700">-></FONT><FONT
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color="#0000BB">SetFont</FONT><FONT color="#007700">(</FONT><FONT color="#0000BB">
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FF_FONT1</FONT><FONT color="#007700">,</FONT><FONT color="#0000BB">
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FS_BOLD</FONT><FONT color="#007700">);
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<BR></FONT><FONT color="#0000BB">$lineplot</FONT><FONT color="#007700">
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-></FONT><FONT color="#0000BB">value</FONT><FONT color="#007700">-></FONT><FONT
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color="#0000BB">SetFormat</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
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"$ %0.1f"</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
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</FONT></CODE></DIV></P>
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<P> This would then result in the following image<DIV class="example">
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<BR> <A href="exframes/frame_example3.4.html" target="blank"><IMG border="0"
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HEIGHT="200" src="img/img/img/img/img/img/example3.4.png" WIDTH="300"></A>
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<BR><B>Figure 9:</B> Making the display values a little bit more
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interesting <A href="exframes/frame_example3.4.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><DIV class="note"><B>Note:</B> You can achieve more advanced
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formatting by using not just the printf() style format string by a
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format callback function. This could allow you to change the displayed
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value with more advanced formatting such as displaying money values
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with "," to separate thousands.</DIV></P>
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