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  28  <H3><A NAME="8_3_2">8.3.2 Adjusting the radius scale</A></H3>
  29  <P> The radius axis can be shown in either a linear or logarithmic
  30   scale. This is controlled, as usual, by a call to <A href="../ref/PolarGraph.html#_POLARGRAPH_SETSCALE">
  31  PolarGraph::SetScale()</A> The two examples below show the same plot in
  32   either linear or logarithmic scale</P>
  33  <P><DIV class="example">
  34  <BR> <A href="exframes/frame_polarex3.html" target="blank"><IMG border="0"
  35  HEIGHT="300"       src="img/img/img/img/img/img/polarex3.png" WIDTH="300"></A>
  36  <BR><B>Figure 141:</B> Using a logarithmic scale <A href="exframes/frame_polarex3.html"
  37  target="blank">[src]</A>&nbsp;
  38  <P></P>
  39  </DIV></P>
  40  <P></P>
  41  <P><DIV class="example">
  42  <BR> <A href="exframes/frame_polarex3-lin.html" target="blank"><IMG border="0"
  43  HEIGHT="300"       src="img/img/img/img/img/img/polarex3-lin.png" WIDTH="300"></A>
  44  <BR><B>Figure 142:</B> Using a linear scale <A href="exframes/frame_polarex3-lin.html"
  45  target="blank">[src]</A>&nbsp;
  46  <P></P>
  47  </DIV></P>
  48  <P></P>
  49  <P> Please note that the maximum values of the scales are different.</P>
  50  <P> By default the scale will be auto scaled depending on the data. You
  51   can also specify a manual scale by supplying an extra argument to the
  52   SetScale() value. The only difference from the manual scaling with the
  53   other X-Y-graphs is that for polar graph you only specify a manual
  54   maximum. The minimum will always be 0 for the linear scale and a scaled
  55   value of 10 (i.e 1, 0.1, 0.001 and so on) for the logarithmic scale.</P>
  56  <P> The plot is clipped to the plot area so if you specify a smaller
  57   scale then the maximum value that part of the plot that are outside the
  58   plot area will be clipped.</P>
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