[Sommaire] [Imprimer]

   1  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
   2  <HTML>
   3  <HEAD>
   4  <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-iso-8859-1">
   5  <LINK REL="Start" HREF="index.html">
   6  <LINK REL="Contents" HREF="toc.html">
   7  <LINK REL="Prev" HREF="931Overview.html">
   8  <LINK REL="Next" HREF="933Adjustingthegridlines.html">
   9  <STYLE TYPE="text/css"><!--
  10  BODY { font-family: serif }
  11  H1 { font-family: sans-serif }
  12  H2 { font-family: sans-serif }
  13  H3 { font-family: sans-serif }
  14  H4 { font-family: sans-serif }
  15  H5 { font-family: sans-serif }
  16  H6 { font-family: sans-serif }
  17  SUB { font-size: smaller }
  18  SUP { font-size: smaller }
  19  PRE { font-family: monospace }
  20  A { text-decoration: none }
  21  --></STYLE>
  22  </HEAD>
  23  <BODY>
  24  <A HREF="toc.html">Contents</A>
  25  <A HREF="931Overview.html">Previous</A>
  26  <A HREF="933Adjustingthegridlines.html">Next</A>
  27  <HR NOSHADE>
  28  <H3><A NAME="9_3_2">9.3.2 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/polarex3.png" WIDTH="300"></A>
  36  <BR><B>Figure 137:</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/polarex3-lin.png" WIDTH="300"></A>
  44  <BR><B>Figure 138:</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>
  59  <HR NOSHADE>
  60  <A HREF="toc.html">Contents</A>
  61  <A HREF="931Overview.html">Previous</A>
  62  <A HREF="933Adjustingthegridlines.html">Next</A>
  63  </BODY>
  64  </HTML>