[ncl-talk] usage of landsea.nc for separation of point data

[Geeta Geeta]

hi all. i have some lat/lon of some points that I have plotted on the map. It is a simple txt file which contains this information (lat/lon) and I have separarate these points into land and sea. 
I wanted to know how to use the file landsea.nc  that separates the point data over land and over ocean. sample txt file is shown below. 20080508.59705.7.HDF     13.367300 76.98685520080530.60046.7.HDF     17.905054 76.77920520090505.65352.7.HDF     5.941240   79.0020090517.65536.7.HDF     18.066799 76.019241
I have attached a sample figure for your reference. 
thanks for your suggestions Geeta.
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