Re: plot contourr lines with different colors

Hi Erika,
You do not need to set cnLineColors, but that means NCL will choose the
line colors based on the the colormap you are using. You lose some
control that way. If cnLineColors are not set and you are using
"gui_default", your first contour will be colored gui_default color #2
(blue), the second contour will be colored gui_default color #3 (a
slightly lighter blue), and so on. Once the end of the colormap is
reached, NCL will start over with gui_default color #2, proceed to color
#3, and so on..
Adam

On 10/15/2013 11:50 AM, Erika Folova wrote:
> Thank you for the response,
>
> In this case, I will use the color table of "gui default",
> anyway I just wonder is there any automatic resource associated to the
> cnLevels, that can do this without using
> res@cnLineColors = (/2,4,8,11/), I mean it's gonna be a
> bit inconvenience to set each color, one by one
> if i have large interval contors in res@cnLevels= (1,2,3,4,...50).
>
> Thank you
> Erika
>
>
>
>
> On Wed, Oct 16, 2013 at 2:08 AM, Adam Phillips <asphilli@ucar.edu
> <mailto:asphilli@ucar.edu>> wrote:
>
> Hi Erika,
> Yes, you need to set cnMonoLineColor = "False" and set
> cnLineColors. See the cnLineColors description here:
> http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLineColors
>
> here's a brief example:
>
> wks = gsn_open_wks("x11","test")
> gsn_define_colormap(wks,"Cat12")
>
> res = True
> ....
> res@cnLevelSelectionMode = "ExplicitLevels"
> res@cnLevels = (/1,2,3,4/)
> res@cnMonoLineColor = False
> res@cnLineColors = (/2,4,8,11/)
> plot = gsn_csm_xy(wks,arr&time,arr,res)
>
> Hope that helps. If not, please respond to the ncl-talk email list..
> Adam
>
>
> On 10/15/2013 11:03 AM, Erika Folova wrote:
>> Hallo,
>>
>> I just wonder is it possible to draw the contour lines (as
>> attached) with different color options
>> in NCL? Thank you for your response.
>>
>> Erika
>>
>>
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> --
> ______________________________________________________________
> Adam Phillipsasphilli@ucar.edu <mailto:asphilli@ucar.edu>
> NCAR/Climate and Global Dynamics Division(303) 497-1726 <tel:%28303%29%20497-1726>
> P.O. Box 3000
> Boulder, CO 80307-3000http://www.cgd.ucar.edu/cas/asphilli
>
>
>
>
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-- 
______________________________________________________________
Adam Phillips                                asphilli@ucar.edu
NCAR/Climate and Global Dynamics Division       (303) 497-1726
P.O. Box 3000				
Boulder, CO 80307-3000    http://www.cgd.ucar.edu/cas/asphilli

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Received on Tue Oct 15 11:58:02 2013