Re: Complex panel plot w/ different coilor tables

Hi Adam,

Thanks for your speedy response. I found that the actual labelbar used below both columns depended on which color table I used when I last invoked gsn_define_colormap.

I couldn't work around it, so I went ahead and merged the colormaps and then segregated out the color-range depending on which variable I was plotting. The plots look perfect.

Thanks again for your assistance,

Maurice

----- Original Message -----
From: Adam Phillips <asphilli@ucar.edu>
Date: Monday, January 24, 2011 4:24 pm
Subject: Re: Complex panel plot w/ different coilor tables
To: ncl-talk@ucar.edu

> Hi Maurice,
> I have managed to use different colomaps on the same page by utilizing
>
> the procedure shown in unique plots example #3 here:
>
>
> (I know this technique works for .ps format but I am not sure if it
> works for other output formats (x11, eps)..) The key is to make sure
> that the first column of plots is actually drawn before you switch to
>
> your second colormap.
>
> I think you are doing that, in that by default gsn_panel draws the
> plot(s) (and advances the frame). So I'm a little confused as to why
> the
> 1st label bar is not reflecting the colors of the first column.
>
> If you simply make your first gsn_panel call and call frame(wks), does
>
> the label bar beneath the column reflect the colors used of the first
>
> column? Assuming the answer to is yes, then that means that the 2nd
> call
> to gsn_panel is somehow affecting the first column's labelbar..
> Instead
> of using gsnPanelLabelBar, can you set lbLabelBarOn = False for the
> first three panels of each plot and then set it to True for the 4th
> panel? (You might have to set gsnPanelBottom = 0.07 or something
> similar
> to leave room at the bottom of the page for the label bar.)
>
> A 2nd possibility: Merge your two colormaps using gsn_merge_colormaps,
>
> and then explicitly select the colors to be used for each set of
> plots.
> Note that your workstation color limit is 256 colors.
>
> Hope that helps..
> Adam
>
> On 01/24/2011 01:58 PM, Maurice.McHugh@noaa.gov wrote:
> > Dear NCL-ers.
> >
> > Apologies if you receive this twice.
> >
> > I am trying to make a complex panel plot displaying 2 variables
> (temp. and precip. biases) using different color tables. My script
> mimics code in and is *Ualmost* right. The LHS column (temp.) and
> RHS column (precip.) both look fine and use their different color
> tables, and have seperate labelbars beneath each column. However, the
> issue I cannot solve is that the colors of the colorbar only come from
> the color table for precip -- the RHS column which was drawn last.
> >
> > How can I insert the correct label bar for the temperature column?
> I really don't want to have precip and temperature differences use the
> same color table. Nor do I want to split into two seperate plots.
> >
> > The misbehaving plot is attached, and relevant code snippet is below.
> >
> > Many thanks,
> >
> > Maurice
> >
> > ;--------------------------------------------------------------------------------------------------------
> > ; Create panel. plotT and plotP are the graphical arrays
> containing the individual
> > ; Temp and Precip plots for paneling.
> > ;--------------------------------------------------------------------------------------------------------
> >
> > resP = True ; modify the panel
> plot
> > resP@gsnPanelLabelBar = True ; add common colorbar
> > resP@lbLabelFontHeightF = 0.007 ; make labels smaller
> > resP@gsnFrame = False ; don't advance
> panel plot
> >
> > resP@gsnPanelYWhiteSpacePercent = 2.5
> > resP@gsnPanelXWhiteSpacePercent = 2.5
> >
> > resP@gsnPanelFigureStrings= (/ "a)","c)","e)","g)" /) ; add
> strings to panel
> > resP@txFontHeightF = .24
> >
> > resP@gsnMaximize = True
> >
> > resP@gsnPanelRight = 0.5 ; draw from left
> edge to center
> >
> > gsn_panel(wks,plotT,(/4,1/),resP) ; now draw as one
> plot
> >
> > ;--------------------------------------------------------------------------------------------------------
> > ;--------------------------------------------------------------------------------------------------------
> >
> > resP2 = True
> > resP2@gsnPanelLabelBar = True ; add common colorbar
> > resP2@lbLabelFontHeightF = 0.007 ; make labels smaller
> > resP2@gsnFrame = False ; don't advance
> panel plot
> >
> > resP2@gsnPanelYWhiteSpacePercent = 2.5
> > resP2@gsnPanelXWhiteSpacePercent = 2.5
> >
> > resP2@txFontHeightF = .24
> >
> > resP2@gsnMaximize = True
> > resP2@gsnPanelFigureStrings= (/ "b)","d)","f)","h)" /) ; add
> strings to panel
> > resP2@gsnPanelLeft = 0.5 ; draw
> from center to right edge
> >
> > gsn_panel(wks,plotP,(/4,1/),resP2) ; now draw as
> one plot
> >
> > ;--------------------------------------------------------------------------------------------------------
> > ; Add column labels to panel.
> > ;--------------------------------------------------------------------------------------------------------
> > txres = True
> > txres@txFontHeightF = 0.0165
> > gsn_text_ndc(wks,"RegCM",0.1,0.99,txres)
> > gsn_text_ndc(wks,"CRU",0.9,0.99,txres)
> > frame(wks)
> >
> >
> >
> >
> > _______________________________________________
> > ncl-talk mailing list
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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
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Received on Mon Jan 24 15:06:54 2011