Re: Color problem with the AreaFill-option

Hi Michael,

Its interesting to note that the colors are off-by-one, as though the
color-scale has been shifted up/down by one between the two plots.
However, I am unable to duplicate this problem, in spite of trying to
mimic your combination of resource settings and data range. How much
trouble would it be to send your data? If you are so inclined, the
best way is via anonymous ftp to:

        ftp.cgd.ucar.edu
        cd incoming
        bin
        put <filename(s)>

and then send a note directly to me indicating the name of the file(s).

Regards,
Rick

On Mar 11, 2010, at 3:03 AM, Baldauf Michael wrote:

> Dear NCL users,
>
> I have a problem with the 'AreaFill'-Option in the
> 'cnFillMode'-ressource.
>
> If I choose 'CellFill' for this ressource then I get correct colors
> in the filled contour plot which correspond
> to the label bar colors and to the labeled isolines
> (see attached figure w_CellFill_corr_colors.png).
> (the isoline drawing and labeling is correct. I could check this
> independently).
>
> But when I choose 'AreaFill' then the color bar and the isolines
> remain the same but the colors in the plot are confused
> (see attached figure w_AreaFill_false_colors.png).
>
> The ONLY difference in producing these two figures is the choice of
> 'AreaFill' and 'CellFill' in lines 143/144 of the attached script
> 'plot_grib_problem.ncl'
> (ok, and also different values for title ('titeltext') and graphics
> output filename ('file_kenn_plot'); this should be harmless, I
> assume).
>
> The problem occurs in the NCL-versions 5.1.1 and 5.2.0 on a Linux
> system.
>
> This behaviour sounds a bit like the 'known bugs' report
> 'Possible disparity in labelbar colors'.
> But here one can see it also in the .png (and .pdf)-graphics file
> and it is obviously not a problem of the labelbar.
>
> I must admit that I am a newcomer in NCL and this seems to be a
> problem
> a lot of people should have. Perhaps I use a very unusual
> combination of
>
> NCL-commands/ressources ...
>
> Thank you very much in advance for your help
>
> Michael
> <
> w_CellFill_corr_colors
> .png
> >
> <
> w_AreaFill_false_colors
> .png
> >
> <plot_grib_problem.ncl>_______________________________________________
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Received on Thu Mar 11 11:23:40 2010