<div dir="ltr"><div class="gmail_quote"><br><div dir="ltr">Hi all ,<div><br></div><div>I am using the script below to plot humidity between 40-70%(green) and 70-100% (orange).</div><div><br></div><div>I want to know if i can set the opacity for each color for example opacity 50% for the green color and 100% for the orange. </div>

<div><br></div><div>Thanks for help.</div><div><br></div><div><div>;************************************************</div><div>load &quot;$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl&quot; </div><div>load &quot;$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl&quot;  </div>

<div>load &quot;$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl&quot;   </div><div>;************************************************</div><div>begin</div><div> a = addfile(&quot;gfs.t00z.pgrb2f00.grib2&quot;,&quot;r&quot;)</div>

<div>    lon = a-&gt;lon_0</div><div>    lat = a-&gt;lat_0</div><div>    icing     = short2flt(a-&gt;RH_P0_L100_GLL0({50000},:,:))</div><div><br></div><div>print(icing(1:4,1:4))</div><div>;********************************************************</div>

<div>;  Display parameters</div><div>;***************************************</div><div>zoom=&quot;test&quot;</div><div>pixel=2048</div><div>;***************************************************</div><div><br></div><div>wks_type=&quot;png&quot;</div>

<div><br></div><div>  wks_type@wkWidth = pixel</div><div>   wks_type@wkHeight = pixel</div><div>  wks_type@wkBackgroundOpacityF = 0.0</div><div>wks = gsn_open_wks(wks_type,&quot;icing_test&quot;)</div><div><br></div><div>

colors = (/ (/255,255,255/),(/0,0,0/),(/255,255,255/), (/244,255,244/), \</div><div>              (/217,255,217/), (/163,255,163/), (/106,255,106/), \</div><div>              (/43,255,106/), (/0,224,0/), (/0,134,0/),(/255,145,0/),\</div>

<div>              (/255,178,102/) /) * 1.0 ; we multiply by 1 to make colors float</div><div><br></div><div>colors = colors/255.</div><div><br></div><div>  </div><div>gsn_define_colormap(wks,colors)</div><div><br></div>
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<br></div><div>res                   = True</div><div>  res@mpProjection      = &quot;Mercator&quot;       ; choose projection</div><div>  res@mpGridAndLimbOn   = False             ; turn on lat/lon lines</div><div>  res@mpPerimOn         = False             ; turn off box around plot</div>

<div>  res@mpFillOn          = False</div><div>  res@mpOutlineOn       = True  </div><div>  res@cnFillOn          = True              ; color plot desired</div><div>  res@cnLineLabelsOn    = False             ; turn off contour lines</div>

<div>   res@mpLimitMode  = &quot;LatLon&quot;</div><div>   res@mpMinLatF            =   -85.0</div><div>    res@mpMaxLatF            =  85.0 </div><div>    res@mpMinLonF            = -180</div><div>    res@mpMaxLonF            = 180</div>

<div>  res@vpXF            = 0                 ; make plot bigger</div><div>  res@vpYF            = 1         </div><div>  res@vpWidthF        = 1</div><div>  res@vpHeightF       = 1</div><div><br></div><div>res@cnLevelSelectionMode = &quot;ExplicitLevels&quot;    ; set explicit contour levels</div>

<div>res@cnLevels    = (/ 40,70,100/)<span style="white-space:pre-wrap">        </span>; set levels</div><div>res@cnFillColors = (/ -1,5,11/)</div><div><br></div><div>;res@cnFillOpacityF=0.5</div></div><div>  <br clear="all">
<div>contour0 = gsn_csm_contour_map(wks,icing,res)  ; create the plot<br></div>-- <br><div dir="ltr"><div>------------------------------</div>Cordialement,<br>Best regards,<br>Rabah Hachelaf <br>  <br><br></div>
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<br></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><div>------------------------------</div>Cordialement,<br>Best regards,<br>Rabah Hachelaf <br></div>
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