[ncl-talk] color table issues

[Grace Choi]

Thank you so much for your explanation. Although my question wasn't clear,
your explanation helped me understand the functions much better.

Sincerely,
Grace

On Thu, Sep 28, 2017 at 9:35 AM, Mary Haley <haley at ucar.edu> wrote:

> Hi Grace,
>
> Minor correction to Dennis' email.  The cnFillPalette resource (only one
> 'l') is what allows you to set the colormap.  It is not a True/False
> resource. The resource Dennis was referring to is cnSpanFillPalette:
>
>   res at cnFillPalette = "rainbow"
>   res at cnSpanFillPalette = True     ; span the rainbow color ,ap
>
> However, ever since NCL Version 6.1.0, which is now almost 5 years ago,
> NCL spans the full color map by default, and you shouldn't need to set
> cnSpanFillPalette at all.
>
> Make sure you don't have this line in your script, because this will cause
> the color map to not be spanned:
>
>   res at gsnSpreadColors = False
>
> If you do have the above, try either setting it to True, or commenting it
> out.
>
> --Mary
>
>
>
> On Wed, Sep 27, 2017 at 3:09 PM, Grace Choi <gracesh27 at gmail.com> wrote:
>
>> Hello everyone,
>>
>> When I try on color table exercises on the ncl website, I only can get 31
>> colors to show up on my x11, as opposed to 255 colors that the example
>> shows. Should I be particularly concerned about this?
>>
>> Also, I am wondering if the issue above is related to the issue I've been
>> having with other functions, such as gsn_define_colormap(wks,"rainbow").
>> When I expect to see actual rainbow colors, I only see different shades of
>> blue on my map. Please help.
>>
>> Sincerely,
>> Grace
>>
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