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Re: matching 2 grids [message #47850 is a reply to message #47849]

Wed, 08 March 2006 17:01

envi35@yahoo.ca
Messages: 48
Registered: March 2005

Member

Hi Mark,

Thanks for your reply!

Sorry I'm not very clear about my problem. But it seems more complex
than the one posted yesterday. They are 2-D arrays. I have 2 files for
grid1: 600*600 array for lat1, and 600*600 array for lon1, one
lat1/lon1 pair (smae coordinate in the array) represents the true
location on earth. So generally lat1 increase along a column, and also
slightly different along a row. Same for lon1, increase along a row,
slightly different along a column. I think grid1 was produced from
polar stereographic projection, so that they are not equally spaced
lat/lon pairs. grid2 is a polygon shaped subset of grid1, they are also
one 2-d array for lat2 and one for lon2 (say 100*120 with 0 filled in
some places), but not exactly the same values as those in grid1, grid2
was defined in a different projection. What I want is to find the
closest lat1/lon1 for each of the lat2/lon2 based on the geographic
location the lat/lon represents.

I'll check the Motley library. I'd appreciate any further insights!

-Jenny

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[Message index]

		Re: matching 2 grids By: envi35@yahoo.ca on Wed, 08 March 2006 21:02
		Re: matching 2 grids By: Robert Moss on Wed, 08 March 2006 17:53
		Re: matching 2 grids By: Mark Hadfield on Wed, 08 March 2006 17:50
		Re: matching 2 grids By: envi35@yahoo.ca on Wed, 08 March 2006 17:01
		Re: matching 2 grids By: Mark Hadfield on Wed, 08 March 2006 16:17
		Re: matching 2 grids By: David Fanning on Thu, 09 March 2006 07:29
		Re: matching 2 grids By: envi35@yahoo.ca on Wed, 08 March 2006 21:57

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