[ncl-talk] Control the contour line labels

[Sandeep K. K.]

Hi Adam,

Your suggestions worked, I got almost desired result with the following
combinations,

res at cnLineLabelPlacementMode="Computed"
res at cnLineLabelDensityF=0.01


Thanks for your reply

On Tue, Jan 26, 2016 at 12:26 AM, Adam Phillips <asphilli at ucar.edu> wrote:

> Hello,
> You can control the line labeling but only to a certain degree. You cannot
> however set resources to instruct NCL to only label each line once.
>
> In my experience you will have to go through some trial and error to get
> what you want. You can try these different combinations of resources:
> Method 1
> res at cnLineLabelPlacementMode = "Computed"
> res at cnLineLabelDensityF = 0.5  ; will have to adjust
>
> Method 2
> res at cnLineLabelPlacementMode = "Randomized"
> res at cnLineLabelDensityF = 0.5  ; will have to adjust
>
> Method 3
> res at cnLineLabelPlacementMode = "Constant"
> res at cnLineDashSegLenF = 0.07   ; will have to adjust
>
> All three methods require you to experiment with the settings of the
> second resource. Finally, note that cnLineLabelCount is a read-only
> resource, so setting that resource will not result in any plot changes.
>
>
> http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLineLabelPlacementMode
>
> http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLineLabelDensityF
>
> http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLineDashSegLenF
>
> Hope that helps. If not, or if you have any further questions please
> respond to ncl-talk.
> Adam
>
>
>
>
>
> On Sun, Jan 24, 2016 at 11:21 PM, Sandeep K. K. <sandeep.ocngr at gmail.com>
> wrote:
>
>> Hello Everyone,
>> I wanted to plot a contour line figure of my variable. I could plot as
>> the attached figure. But I wanted the line labelling of each contour to be
>> appear only once. Here you can see in the attached figure that labelling
>> for the 110 contour line appears 5 times, and similarly some others. Is it
>> possible to control the line labelling?. I tried with
>>
>> res at cnLineLabelDensityF and
>> res at cnLineLabelCount But was not successful. I would be grateful for any
>> help or suggestions.
>>
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>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>
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