Re: Wavy contour lines in contour plot

Hi Ekin,
If you are asking about how to make the contours smoother, then you have
two options:

1) Let NCL (semi-) automatically smooth the data:
Set cnSmoothingOn = True
http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnSmoothingOn
You may also need to set cnSmoothingTensionF and/or cnSmoothingDistanceF
as is stated in the link above.

2) Smooth the data yourself:
Before passing the data to gsn_csm_contour, you can smooth it yourself.
I would recommend smth9_Wrap:
http://www.ncl.ucar.edu/Document/Functions/Contributed/smth9_Wrap.shtml

Good luck,
Adam

On 02/12/2013 01:16 PM, Mary Haley wrote:
> Dear Ekin,
>
> I'm not sure what you mean by "curvy" lines versus "shaky" lines. Do you have
> a plot sample from what you think the contours should look like?
>
> Are your coordinate axes correct? Do the data values in the contour
> lines look correct?
>
> It would help if you could provide your data and your script.
>
> If you can provide your script and data, then see below for ftp information:
>
> http://www.ncl.ucar.edu/report_bug.shtml
>
> --Mary
>
> On Feb 12, 2013, at 1:00 AM, Ekin Akoglu wrote:
>
>> Dear all,
>>
>> I am plotting a contour graph from data and the contour lines which
>> are drawn by NCL 6.0.0 looks wavy. I attached the plot to this e-mail.
>> Do you have an idea about how to have curvy contour lines instead of
>> these shaky drawn lines?
>>
>> Regards,
>>
>> Ekin Akoglu
>>
>> Institute of Marine Sciences
>> Middle East Technical University
>> P.O. Box 28, 33731
>> Erdemli, Mersin
>> Turkey
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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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