Re: Output a NetCDF Mask Based on Geographic Areas

Hi Scott,

I'm afraid it is not possible to interact with the NCL map databases
in this fashion. We've had requests for this kind of thing, and it's
on our to do list.

You might look at the landsea_mask function: http://www.ncl.ucar.edu/
Document/Functions/Shea_util/landsea_mask.shtml

You would have to provide the lat/lon arrays of your geographic area.
Perhaps they are available in a shapefile, which NCL does support.

For some general masking examples, please see:

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

This page might give you some ideas on what you are trying to
accomplish.

--Mary

On Jan 4, 2010, at 11:53 AM, Scott Capps wrote:

> Greetings,
>
> I was wondering if there is a way to create a netCDF mask file with
> one's and zero's corresponding to a geographic areas specified
> using the Earth..4 map data set?
>
> The mask_4.ncl example on the NCL website is great for plotting.
> However, I want to create a mask netCDF file based on geographic
> areas. Is this possible?
>
>
> Thank you,
>
>
> Scott
>
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Received on Tue Jan 5 10:10:49 2010