[gradsusr] Plotting shaded fields on top of each other using transparent colors

[Jeff Duda]

I am using version 2.1.a3. I wish to plot two color filled fields on the
same map, except I want to use transparent colors for the second field I
plot (overlaying the first) so that the first field will remain visible
under the transparent colors in the second field. Here is the code I'm
using:

  'run temprgb 5 110 0'
  'd 1.8*tmp2m-459.67'
  'run xcbar 10 10.15 2 6.5 -line on'
  'set gxout contour'
  'set cthick 12'
  'set ccolor 1'
  'set clab masked'
  'set cint 2'
  'set clopts -1 6 0.08'
  'd msletmsl/100'
  'set clevs -1e-4 -5e-5 -1e-5 0 1e-5 5e-5 1e-4'
  'set ccolor 100'
  'set cthick 3'
  'd
smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(hdivg(ugrd10m,vgrd10m))))))))))))))'
  'set gxout shade2'
  'set clevs -1e-4 -5e-5'
  'set rgb 110 100 100 255 -100'
  'set rgb 111 0 25 225 -100'
  'set ccolor 110 111 0'
  'd
smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(smth9(hdivg(ugrd10m,vgrd10m))))))))))))))'

I have tried using gxout shaded, shade2, and shade2b, as well as using both
positive and negative alpha values when defining colors 110 and 111, but
the plot is always the same - the second field is plotted on top of the
first fully opaque and covers it up. Also, for some reason, it thinks the
color #0 is orange, which my background is set to white.

What am I missing here?

Jeff Duda
-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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