Country maskout

[Siraj Ul Islam]

Hi All,

While working on GCM data, I have maskout surface from sea using maskout
function. Now I want to mask out my country (Pakistan) from global
data i.eexcept pakistan I want to assign undefined values to all grid
boxes.
How can I do it using gradsc or any subrotien??

--
Siraj Ul Islam
1: Research Fellow (Climate Section)
Global Change Impact Studies Centre
First Floor Saudi Pak tower
Blue Area Islamabad Pakistan
Ph :   92-51-9219785
Fax : 92-51-9219787

2: Mphil Scholar
Computational Physics and Simulation Group
Department of Physics
Quaid e Azam University
Islamabad.
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