Re: Draw contour lines with a specific value (not only negative or positive) as dashed, thanks!

Hey Adam,

Your suggestion works!

Thanks a lot,

Best Regards,

Xiaoming

Quoting Adam Phillips <asphilli@ucar.edu>:

> Hi Xiaoming,
> If you want to specify that a single contour line be colored a specific
> color, then you could use the following code:
> gsn_define_colormap(wks,"Cat12")
> res@cnLevelSelectionMode = "ExplicitLevels"
> res@cnLevels = ispan(960,1030,10)
> res@cnMonoLineColor = False
> res@cnLineColors = (/1,1,1,9,1,1,1,1/) ; set to color indices of
> ; Cat12 colormap
>
> alternatively, if you have many contour levels, and you want to specify
> named colors:
> arr = new(dimsizes(cnLevels),"string")
> arr = "black"
> arr(3) = "red"
> res@cnLineColors = arr
>
> Hope that helps,
> Adam
>
> On 01/10/2011 12:11 PM, Xiaoming Sun wrote:
>>
>> Dear All,
>>
>> Does anybody know how to draw contour lines with a specific value (not only
>> negative or positive), for example the contour line with a value of 990, in
>> different color with the rest of the other contour lines?
>>
>> Thanks a lot?
>>
>> Best Regards,
>>
>> Xiaoming
>>
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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 Mon Jan 10 12:33:39 2011