[ncl-talk] About contour line thickness

[Cheung]

Hi David, thanks, it solves my problem.

Best
Cheung








At 2015-07-22 10:21:30, "David Brown" <dbrown at ucar.edu> wrote:
>Hi Cheung,
>Try using cnLevelFlags
>(http://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnLevelFlags).
>To use it you will need to know which level index represents the 0
>contour level.
> -dave
>
>
>On Tue, Jul 21, 2015 at 7:25 PM, zuibeidemei <zuibeidemei at 126.com> wrote:
>> Hi Adam:
>>
>>                       Thanks for your reply.
>>
>>                       The disired figure is a contour figure with color
>> filled and only one zero line visible, (cnFillOn =True& cnLinesOn=True)
>>
>>                       Just setting cnlevels = 0 may hurt the display of the
>> color part.
>>
>>                       I tried to minimize the cnLineThickness (like 1e-10)
>> and make it unvisible,
>>
>>                       but  maximize the zero line thickness (10), with the
>> following res.
>>
>>                       res at cnLineThicknessF         = 1e-10
>>
>>                       res at gsnContourZeroLineThicknessF =10
>>
>>                       But this  combination fails.
>>
>>
>> —
>> Best
>>
>> Cheung
>>
>>
>>
>>
>>
>> At 2015-07-21 23:42:36, "Adam Phillips" <asphilli at ucar.edu> wrote:
>>
>> Hi Cheung,
>> I would recommend setting cnLevelSelectionMode = "ExplicitLevels" and
>> setting cnLevels = 0.
>>
>> See example #4 here:
>> http://www.ncl.ucar.edu/Applications/contourLev.shtml#ex4
>>
>> Hope that helps. If not, please respond to the ncl-talk email list.
>> Adam
>>
>> On Mon, Jul 20, 2015 at 6:35 PM, Cheung <zuibeidemei at 126.com> wrote:
>>>
>>> Dear all:
>>>
>>>                   I'd like plot a contour figure with only a zero line
>>> displayed, and lines of all other contour levels are ignored.
>>>
>>>                   I tried with the following res with several values
>>> combination but it doesn't work. Can anyone give a help?
>>>
>>>                  res at cnLineThicknessF
>>>                  res at gsnContourLineThicknessesScale
>>>                  res at gsnContourZeroLineThicknessF
>>>
>>> --
>>>
>>>  Regards
>>>
>>>  Cheung
>>>
>>>
>>>
>>>
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>>
>>
>>
>> --
>> Adam Phillips
>> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
>> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>>
>>
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