[ncl-talk] Question about tripole grid vector plot

[Mary Haley]

Dear Lee,

I didn't see any responses to this. Are you still having an issue with it?

It would help if you could include an image so we know what you mean by
"the figure only shows part of the data". Even better, if you can provide
the latest version of the script and the data so we can run it here, then
we can debug this more quickly.

One possible issue is that you need to turn off the addition of a cyclic
point:

  res at gsnAddCyclic = False
  vcres at gsnAddCyclic = False

Also, you may want to try raster fill:

  res at cnFillMode = "Raster"

and further, putting it on a triangular mesh:

  res at trGridType = "TriangularMesh"

Finally, you may want to visit this page, and in particular, look at
example ice_4.ncl:

http://www.ncl.ucar.edu/Applications/orca.shtml

--Mary


On Tue, Aug 18, 2015 at 1:24 PM, 彭犁然 <heroplr at gmail.com> wrote:

> Hello, Everyone!
>
> I tried to plot the sea ice motion and sea ice concentration for the CESM
> output (v2 0.1-deg tripole grid). However, the figure only shows part of
> the data. To make sure the data is not blank, I also plotted the same data
> through Matlab, which correctly shows all the data. Thus the data is not
> blank in those areas. Can someone give me a hint on what is the wrong with
> my NCL script? I guess there is something I should do to deal with the two
> poles over the northern hemisphere for analysing the tripole grid data.
>
> Thank you so much!
>
> Lee
>
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