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  28  <H3><A NAME="8_1_14">8.1.14 Using filled line graphs</A></H3>
  29  <P> Using a filled line plot is not much different from using a normal
  30   line plot, in fact the only difference is that you must call the method
  31   <A href="../ref/LinePlot.html#_LINEPLOT_SETFILLCOLOR"> SetFillColor()</A>
  32   on a normal line plot. This will then fill the area under the line
  33   graph with the chosen color.</P>
  34  <P> In the example below we have also, as an example, specified plot
  35   marks (see previous sections).<DIV class="example">
  36  <BR> <A href="exframes/frame_filledlineex01.html" target="blank"><IMG border="0"
  37  HEIGHT="200"  src="img/filledlineex01.png" WIDTH="300"></A>
  38  <BR><B>Figure 23:</B> Filled line graph with plot marks <A href="exframes/frame_filledlineex01.html"
  39  target="blank">[src]</A>&nbsp;
  40  <P></P>
  41  </DIV></P>
  42  <P><STRONG> Note 1.</STRONG> If you add multiple filled line plots to
  43   one graph make sure you add the one with the highest Y-values first
  44   since it will otherwise overwrite the other plots and they will not be
  45   visible. Plots are stroked in the order they are added to the graph, so
  46   the graph you want front-most must be added last.</P>
  47  <P><STRONG> Note 2.</STRONG> When using legends with filled line plot
  48   the legend will show the fill color and not the bounding line color.</P>
  49  <P><STRONG> Note 3.</STRONG> Filled line plots is only supposed to be
  50   used with positive values. Filling line plots which have negative data
  51   values will probably not have the appearance you expect.</P>
  52  <P> As you can see from the graph above the grid lines are below the
  53   filled line graph. If you want the grid lines in front of the graph you
  54   can adjust the depth with call to <A href="../ref/Graph.html#_GRAPH_SETGRIDDEPTH">
  55   Graph::SetGridDepth()</A> As the following example shows<DIV class="example">
  56  <BR> <A href="exframes/frame_filledlineex01.1.html" target="blank"><IMG border="0"
  57  HEIGHT="200"  src="img/filledlineex01.1.png" WIDTH="300"></A>
  58  <BR><B>Figure 24:</B> Adjusting the depth of the gridlines <A href="exframes/frame_filledlineex01.1.html"
  59  target="blank">[src]</A>&nbsp;
  60  <P></P>
  61  </DIV></P>
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