Re: Trouble in Contour Effects

Hi Chen,

1. In the first plot, you could plot all contour levels except the one of
interest, by removing that one from the
   res@cnLevels

 2. I do not use wrf_map_overlays, so i cannot comment on it. If you just
use the overlay procedure, you could suppress the
second contour's description by setting

res2@cnInfoLabelOn = False

Pls. check also http://ncl.ucar.edu/Applications/Scripts/conOncon_5.ncl

saji

On Sat, Sep 4, 2010 at 8:36 AM, ChenFeng <fengfengabc003@163.com> wrote:

> Hi,Saji,
>
> Thanks for your help. I have done as what you said. However, I met two
> questions.
> 1. the first and second contours overlaped and the color always show white
> in the plot.
> 2. I do overlay with "wrf_map_overlays", so the second
> contour's description will display
> at the topleft corner of the plot. how to delete it?
>
> Thanks again!
>
> ChenFeng
> 2010-09-04
>
>
> ======== 2010-09-03 15:32:29 您在来信中写道： ========
>
>
> You will have to do this in two steps.
>
> 1. Plot your data as usual, after setting res@gsnDraw=False, res@gsnFrame
> =False
> 2. Apply settings of interest to the specific contour line that you want
>
> res2=True
> res2@cnLevelSelectionMode = "ExplicitLevels"
> res2@cnLevels = the_contour_level_of_interest
> res2@cnLineThicknessF=thickness
> res2@cnLineColor = color
> res2@gsnFrame=False
> res2@gsnDraw=False
> second_plot=gsn_csm_contour(wks,data,res2)
> overlay(plot, second_plot)
>
> draw(plot)
> frame(wks)
>
> Hope it helps,
>
> saji
>
>
> On Fri, Sep 3, 2010 at 11:14 AM, ChenFeng <fengfengabc003@163.com> wrote:
>
>> Hi, NCL-users,
>>
>> Does anybody know how to draw an explicit contour line with a user-defined
>> thickness value and color?
>> I only find the "gsnContourZeroLineThicknessF" to set the thickness of the
>> zero contour just as in
>> http://www.ncl.ucar.edu/Applications/Scripts/coneff_2.ncl
>>
>> Thanks a lot and best regards!
>>
>> Feng Chen
>> 2010-09-03
>>
>>
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>
> = = = = = = = = = = = = = = = = = = = = = =
>

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Received on Sat Sep 4 02:37:20 2010