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<A HREF="toc.html">Contents</A>
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<A HREF="932Adjustingtheradiusscale.html">Previous</A>
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<HR NOSHADE>
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<H3><A NAME="9_3_3">9.3.3 Adjusting the grid lines</A></H3>
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<P> As usual you have full freedom to select what grid lines you like to
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show (and what colors they should have). There are three different
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types of grid lines you may adjust. The radius minor and major grid
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lines and the angle grid lines.</P>
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<P> You select what grid lines to show with a call to <A href="../ref/PolarAxis.html#_POLARAXIS_SHOWGRID">
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PolarAxis::ShowGrid()</A> The two example below shows a logarithmic plot
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with either just major grid lines or both minor and major grid lines.</P>
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<P><DIV class="example">
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<BR> <A href="exframes/frame_polarex4.html" target="blank"><IMG border="0"
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HEIGHT="350" src="img/polarex4.png" WIDTH="300"></A>
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<BR><B>Figure 139:</B> Using a logarithmic scale with just major
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gridlines <A href="exframes/frame_polarex4.html" target="blank">[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><DIV class="example">
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<BR> <A href="exframes/frame_polarex5.html" target="blank"><IMG border="0"
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HEIGHT="350" src="img/polarex5.png" WIDTH="300"></A>
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<BR><B>Figure 140:</B> Using a logarithmic scale with both minor and
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major gridlines <A href="exframes/frame_polarex5.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> The colors of the grid lines are specified with a call to <A href="../ref/PolarAxis.html#_POLARAXIS_SETGRIDCOLOR">
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PolarAxis::SetGridColor()</A></P>
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<P> For the angle grid lines it is possible to specify the angle
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division between each grid line with the method <A href="../ref/PolarAxis.html#_POLARAXIS_SETANGLESTEP">
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PolarAxis::SetAngleStep()</A> You specify the step distance in degrees.
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By default the step size is 15 degrees.</P>
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