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matching 2 grids [message #47855]

Wed, 08 March 2006 14:17

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

Member

Hi all,

I have 2 sets of lat/lon pairs in different grids - grid1 and grid2,
both in irregular shape and I've filled some zero numbers to make them
regular. grid2 is a subset of grid1. I want to find the coordinates of
x1,y1 in grid1 (lat1/lon1) which are closest to each of the nonzero
lat2/lon2 paris in grid2.

I made a programm with several loops, it is kind of did what I want,
but it is very slow and the boundary is not tidy. my grid1 is 600*600,
and I have 10 grid2 to process.

Is there an IDL function that I could use in this case?

Thanks,
Jenny

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[Message index]

		matching 2 grids By: envi35@yahoo.ca on Wed, 08 March 2006 14:17
		Re: matching 2 grids By: envi35@yahoo.ca on Thu, 09 March 2006 13:49
		Re: matching 2 grids By: Mark Hadfield on Thu, 09 March 2006 12:54
		Re: matching 2 grids By: David Fanning on Thu, 09 March 2006 09:52
		Re: matching 2 grids By: envi35@yahoo.ca on Thu, 09 March 2006 09:42
		Re: matching 2 grids By: David Fanning on Thu, 09 March 2006 07:36

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