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  28  <H3><A NAME="9_1_3">9.1.3 Adding grid line to the radar plot</A></H3>
  29  <P> Each major tick mark can also be connected together to create a
  30   grid. The grid is accessed through the 'grid' property of the graph. To
  31   enable the grid and set the line style to &quot;dotted&quot; you would have to
  32   add the lines<DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
  33  &nbsp;$graph</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">grid</FONT><FONT
  34  color="#007700">-&gt;</FONT><FONT color="#0000BB">Show</FONT><FONT color="#007700">
  35  ();
  36  <BR></FONT><FONT color="#0000BB">$graph</FONT><FONT color="#007700">-&gt;</FONT><FONT
  37  color="#0000BB">grid</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
  38  SetLineStyle</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
  39  &quot;dotted&quot;</FONT><FONT color="#007700">);</FONT><FONT color="#0000BB"></FONT>
  40  </FONT></CODE></DIV></P>
  41  <P>and would result in the following graph<DIV class="example">
  42  <BR> <A href="exframes/frame_radarex4.html" target="blank"><IMG border="0"
  43  HEIGHT="200"  src="img/radarex4.png" WIDTH="250"></A>
  44  <BR><B>Figure 113:</B> Adding dotted gridlines to the graph <A href="exframes/frame_radarex4.html"
  45  target="blank">[src]</A>&nbsp;
  46  <P></P>
  47  </DIV></P>
  48  <P>By design the plot is above the grid line but beneath the axis in
  49   image depth, hence some part of the grid lines are hidden.</P>
  50  <P> To have the grid lines more &quot;visible&quot; just change their color, say
  51   to, dark red by invoking the SetColor() method on the grid lines which
  52   would give the following result</P>
  53  <P> Another simple change we could do would be to just change the
  54   background color of the radar graph. This is (not surprisingly) done by
  55   a call to the method SetColor() invoked on the graph object.<DIV class="example">
  56  <BR> <A href="exframes/frame_radarex6.html" target="blank"><IMG border="0"
  57  HEIGHT="200"  src="img/radarex6.png" WIDTH="250"></A>
  58  <BR><B>Figure 114:</B> Changing the background color <A href="exframes/frame_radarex6.html"
  59  target="blank">[src]</A>&nbsp;
  60  <P></P>
  61  </DIV></P>
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