Re: Different colormaps for panel plots

Could you also join the three colormaps together into one larger colormap
(perhaps with gsn_merge_colormaps), then use gsnSpreadColorStart/End or
cnFillColors to limit the range of colors used for each plot?

Andrew

2009/11/16 Adam Phillips <asphilli@ucar.edu>

> Hi Ashley,
> (The following is true for .eps/.ps generation. I'm not sure if it will
> work for x11 windows.)
>
> To do what you want, you need to draw each panel on the page before you
> switch your colormap. I can think of 2 ways to accomplish this:
> 1) Still use gsn_panel, specifying
> gsnPanelBottom/ganPanelTop/gsnPanelRight/gsnPanelLeft to position each
> of the tree plots individually, and to keep the sizes the same. For
> example:
>
> gsn_define_colormap(wks,cmap1)
> plot = gsn_csm_contour_map(wks,precip,res1)
> pnlres@gsnPanelLeft = .05
> pnlres@gsnPanelRight = 0.3
> gsn_panel(wks,plot,(/1,1/)pnlres)
>
> gsn_define_colormap(wks,cmap2)
> plot = gsn_csm_contour_map(wks,temp,res2)
> pnlres@gsnPanelLeft = 0.35
> pnlres@gsnPanelRight = 0.6
> gsn_panel(wks,plot,(/1,1/)pnlres)
>
> gsn_define_colormap(wks,cmap3)
> plot = gsn_csm_contour_map(wks,elev,res3)
> pnlres@gsnPanelLeft = 0.65
> pnlres@gsnPanelRight = 0.9
> gsn_panel(wks,plot,(/1,1/)pnlres)
>
> 2) Specify each plot's location on the page using vpYF, vpXF, vpWidthF,
> and vpHeightF (manually paneling).
> Each resource list would have the same vpWidthF/vpHeightF/vpYF
> settings.
>
> res1@vpHeightF = 0.4
> res1@vpWidthF = 0.3
> res1@vpYF = 0.7
> res1@gsnFrame = False
> res1@gsnDraw = True ; default
>
> res2@vpHeightF = res1@vpHeightF
> .....(and so on)
>
> res1@vpXF = 0.1
> plot = gsn_csm_contour_map(wks,precip,res1)
>
> res2@vpXF = 0.4
> plot2 = gsn_csm_contour_map(wks,temp,res2)
>
> res3@vpXF = 0.7
> plot3 = gsn_csm_contour_map(wks,elev,res3)
> --------------------------------
> I think option 2 is the way to go. Easier to control things more
> directly via the vp resources. NCL will maintain the proper aspect ratio
> for the map, so keep that in mind with regards to the settings for
> vpWidthF/vpHeightF.
>
> Either way you go it will definitely be a trial by error approach, as
> you'll have to run the script a bunch of times. The procedure
> drawNDCGrid might help you to position stuff, so you may want to look at
> that:
> http://www.ncl.ucar.edu/Document/Functions/Shea_util/drawNDCGrid.shtml
>
> Good luck,
> Adam
>
> Ashley Watson wrote:
> > Dear NCL users,
> >
> > I am trying to create 3 plots on one page each with its own
> > user-defined colormap. The part of the script is given below.
> > It doesn't seem to work for me as all 3 plots show colors defined as
> > colormap "cmap3" (see below).
> >
> > Regards
> > Ashley
> >
> >
> > begin
> > ........
> > ........
> > ........
> > plot = new(3,graphic)
> >
> > gsn_define_colormap(wks,cmap1) ; Define a color map for
> > 1st plot
> > plot(0) = gsn_csm_contour_map(wks,precip,res1)
> >
> > gsn_define_colormap(wks,cmap2") ; Define a color map
> > for 2nd plot
> > plot(1) = gsn_csm_contour_map(wks,temp,res2)
> >
> > gsn_define_colormap(wks,cmap3") ; Define a color map for
> > 3rd plot
> > plot(2) = gsn_csm_contour_map(wks,elev,res3)
> >
> > gsn_panel(wks,plot,(/1,3/),pnlres)
> >
> > end
> >
> >
> >
> >
> > ------------------------------------------------------------------------
> >
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>
> --
> __________________________________________________
> Adam Phillips
> asphilli@ucar.edu
> National Center for Atmospheric Research tel: (303) 497-1726
> Climate and Global Dynamics Division fax: (303) 497-1333
> P.O. Box 3000
> Boulder, CO 80307-3000 http://www.cgd.ucar.edu/cas/asphilli
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Received on Tue Nov 17 01:39:07 2009