<div dir="ltr">Hi Karin,,<div><br></div><div>I did, but it doesnt work for gsn_csm_vector_scalar_map, no idea why..</div><div><br></div><div>Chang.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 5, 2016 at 7:53 PM, Karin Meier-Fleischer <span dir="ltr">&lt;<a href="mailto:meier-fleischer@dkrz.de" target="_blank">meier-fleischer@dkrz.de</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div bgcolor="#FFFFFF" text="#000000">
    Hi Xi,<br>
    <br>
    have you taken a look at the first example of the vector examples
    page<br>
        <a href="http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl" target="_blank">http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl</a><br>
    <br>
    When you want to control the minimum/maximum and interval of the
    contour lines use<br>
    
    <pre>  res@cnLevelSelectionMode = &quot;ManualLevels&quot;     ; set manual contour levels
  res@cnMinLevelValF       = 24.0               ; set min contour level
  res@cnMaxLevelValF       = 29                 ; set max contour level
  res@cnLevelSpacingF      = 0.10               ; set contour spacing
</pre>
    Bye,<br>
    Karin<br>
    <br>
    <div>Am 05.02.16 um 19:00 schrieb Xi Chang:<br>
    </div>
    <blockquote type="cite"><div><div class="h5">
      <div dir="ltr">
        <div>
          <div>Hello...<br>
            <br>
          </div>
          Could you please tell me how to control the contour interval
          for color shading once im using this function  <b>gsn_csm_vector_scalar_map</b>.<br>
        </div>
        <br>
        ;===========PLOT=================<br>
        <br>
          wks = gsn_open_wks(&quot;png&quot;,&quot;overlay&quot;)<br>
        <br>
          res                       = True              ; plot mods
        desired<br>
          plot = new(16,graphic)<br>
        <br>
          res@gsnDraw             = False           ; don&#39;t draw<br>
          res@gsnFrame            = False           ; don&#39;t advance
        frame<br>
        <br>
        ; vector rescoures<br>
          res@vcRefLengthF             = 0.045<br>
          res@vcRefMagnitudeF          = 20.0<br>
          res@vcRefAnnoOrthogonalPosF  = -0.12<br>
          res@vcRefAnnoParallelPosF    =  0.997<br>
          res@vcRefAnnoFontHeightF     = 0.015<br>
          res@vcMinDistanceF          = 0.03<br>
          res@lbLabelBarOn        = False    <br>
        <br>
          res@mpProjection   = &quot;AzimuthalEquidistant&quot;  ; choose map
        projection<br>
          res@mpLimitMode    = &quot;LatLon&quot;          ; use lat/lon
        coordinates to limit area<br>
          res@mpMinLatF      = 25.<br>
          res@mpMaxLatF      = 75.<br>
          res@mpMinLonF      = -80.<br>
          res@mpMaxLonF      = 20.<br>
          res@gsnMaximize           = True   <br>
        <br>
        <b>  res@gsnScalarContour        = True<br>
            res@cnFillOn                = True<br>
            res@cnFillPalette           = &quot;gui_default&quot;     ; set color
          map<br>
            res@cnLinesOn               = False             ; turn off
          contour lines<br>
        </b><br>
        <br>
        <br>
          do i=0,15<br>
          plot(i)  = gsn_csm_vector_scalar_map(wks,u(i,:,:),v(i,:,:), \<br>
                                           p(i,:,:),res)<br>
          end do<br>
        <br>
          resP                     = True                ; modify the
        panel plot<br>
          resP@gsnMaximize           = True   <br>
          gsn_panel(wks,plot,(/4,4/),resP)               ; now draw as
        one plot<br>
        <br>
        <br>
        end<br>
        <br>
        <br>
      </div>
      <br>
      <fieldset></fieldset>
      <br>
      </div></div><pre>_______________________________________________
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</pre>
    </blockquote>
    <br>
  </div>

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<br></blockquote></div><br></div>