on actually uses</tt><br>
  <tt>% an ellipsoidal earth (m_map uses a spherical earth).</tt><br>
  <br>
  <tt>m_proj('stereographic','latitude',90,'radius',55,'rotangle',45);</tt><br>
  <br>
  <tt>% Convert bottom and left corner points to screen coords. This</tt><br>
  <tt>% is of course a kludge.</tt><br>
  <tt>[MAPX,dm]=m_ll2xy([279.26 350.03],[33.92 34.35],'clip','off');</tt><br>
  <tt>[dm,MAPY]=m_ll2xy([168.35 279.26],[30.98 33.92],'clip','off');</tt><br>
  <br>
  <tt>clf</tt><br>
  <tt>% Plot data as a