[ncl-talk] contour lines to shapefile

Dave Allured - NOAA Affiliate dave.allured at noaa.gov
Tue Nov 19 16:20:32 MST 2024


Manisha, NCL can only read shapefiles, it can not read them.  What exactly
do you mean by "(b) perform the above manipulation"?  Do you just want to
make some expanded plots, or something else?


On Tue, Nov 19, 2024 at 3:34 PM Manisha Ganeshan via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Hello,
>
> I have cloud mask data in the form of binary 0 and 1 on a lat/lon grid.
> I'm able to plot these values using gsn_csm_contour_map (attached figure
> and plotting code).
> I would like to expand the masks intersected by the four circular blue
> markers shown in the figure.
> However, I don't have a shapefile for the masks, and I'm wondering if
> there is any way to
> (a) extract a shapefile from contour masks
> (b) perform the above manipulation without a shapefile
>
> Thanks,
> Manisha
> --
> Dr. Manisha Ganeshan
> Morgan State University
> Maryland, U.S.A.
>
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