[ncl-talk] Remove contours around objects

[Alan Brammer]

Alternate suggestion.   Would require you do some tricks on your colorbar.  Maybe make a separate legend instead of using the colorbar. 

Put white in between each level with an extra cnlevel as well.  The gradient will then be to white rather than through other colors.  This would mean you have a white border between adjacent categories but you don’t seem to have touching categories anyway.  




> On 18 Feb 2016, at 11:39, Alan Brammer <abrammer at albany.edu> wrote:
> 
> Ah you’re right.  My bad, Thought I’d done exactly this and succeeded, but evidently not.  
> 
> I tried a couple of things with some dummy data but couldn’t find a solution.  
> My last suggestion would be regrid the data using a nearest neighbour method to a higher resolution then plot that as raster.  Make the blocks small enough that it’s aesthetically pleasing.  
> 
> popmask_3.ncl  on the categorical examples page does this the brute force way. https://www.ncl.ucar.edu/Applications/classification.shtml <https://www.ncl.ucar.edu/Applications/classification.shtml>
> Or the ESMF regridding pages have nearest neighbour methods. 
> 
> Maybe someone else has a more elegant suggestion.  
> 
> 
> 
> 
> 
> 
>> On 18 Feb 2016, at 11:15, <paraskevi.giannakaki at giub.unibe.ch <mailto:paraskevi.giannakaki at giub.unibe.ch>> <paraskevi.giannakaki at giub.unibe.ch <mailto:paraskevi.giannakaki at giub.unibe.ch>> wrote:
>> 
>> Hi Alan,
>> 
>> Thank you for your quick response. I have already tried this but it adds the contours with the cnRasterSmoothingOn = True command.
>> 
>> Evi 
>> 
>> Paraskevi Giannakaki , PhD 
>> Climate impact group,
>> Institute of Geography, University of Bern
>> Hallerstrasse 12, 5th floor
>> CH-3012 Bern
>> Mail: paraskevi.giannakaki at giub.unibe.ch <mailto:paraskevi.giannakaki at giub.unibe.ch>
>> Von: Alan Brammer [abrammer at albany.edu <mailto:abrammer at albany.edu>]
>> Gesendet: Donnerstag, 18. Februar 2016 17:12
>> An: Giannakaki, Paraskevi (GIUB)
>> Cc: ncl-talk at ucar.edu <mailto:ncl-talk at ucar.edu>
>> Betreff: Re: [ncl-talk] Remove contours around objects
>> 
>> try 
>> cnRasterSmoothingOn = True
>> with 
>> cnFillMode = “RasterFill”
>> 
>> It will make it less “blocky” without adding the gradients that areafill adds.  
>> 
>> 
>> https://www.ncl.ucar.edu/Applications/raster.shtml <x-msg://48/redir.aspx?REF=x0FsX-OycJBMyxWNEoPA-ibtqwBYkD9NnkPXOYoHiUgb1FCVfjjTCAFodHRwczovL3d3dy5uY2wudWNhci5lZHUvQXBwbGljYXRpb25zL3Jhc3Rlci5zaHRtbA..>
>> https://www.ncl.ucar.edu/Document/Graphics/Resources/cn.shtml#cnRasterSmoothingOn <x-msg://48/redir.aspx?REF=Zd7alXS4tWQ7f-J6q4zBve7SDGeG8xb1Qy8jifD7G_Mb1FCVfjjTCAFodHRwczovL3d3dy5uY2wudWNhci5lZHUvRG9jdW1lbnQvR3JhcGhpY3MvUmVzb3VyY2VzL2NuLnNodG1sI2NuUmFzdGVyU21vb3RoaW5nT24.>
>> 
>> 
>> 
>> Alan
>> 
>>  
>>> On 18 Feb 2016, at 11:07, paraskevi.giannakaki at giub.unibe.ch <x-msg://48/redir.aspx?REF=K8a4JF_Jcv6MoIZTkVr8JcqOypSU7MSXhTiKHNYJ0uKFNVOVfjjTCAFtYWlsdG86cGFyYXNrZXZpLmdpYW5uYWtha2lAZ2l1Yi51bmliZS5jaA..> wrote:
>>> 
>>> 
>>> Dear all,
>>> 
>>> I try to plot some objects that have integer values between 1 and 40. My problem is that instead of one-color objects I have a contour around my objects with the previous color from the color-table (see the attached figure). I have tried different tricks such as insert white color between the values of the objects but still I have the same result. Only with cnFillMode <x-msg://48/UrlBlockedError.aspx> = "RasterFill" I do not see this contour but then the plots are not so nice. How can I get rid of these contours? Thank you very much in advance for your time. 
>>> 
>>> NCL version 6.0.0
>>> (Ubuntu 4.8.2-19ubuntu1) 4.8.2
>>> 
>>> Best regards,
>>> Evi
>>> 
>>> Paraskevi Giannakaki , PhD 
>>> Climate impact group,
>>> Institute of Geography, University of Bern
>>> Hallerstrasse 12, 5th floor
>>> CH-3012 Bern
>>> Mail: paraskevi.giannakaki at giub.unibe.ch <x-msg://48/redir.aspx?REF=K8a4JF_Jcv6MoIZTkVr8JcqOypSU7MSXhTiKHNYJ0uKFNVOVfjjTCAFtYWlsdG86cGFyYXNrZXZpLmdpYW5uYWtha2lAZ2l1Yi51bmliZS5jaA..><test_plot.ncl><colortest.png>_______________________________________________
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