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Re: The best way to bin data to a grid? (may not be an IDL-specific question) [message #78738 is a reply to message #78737]

Mon, 12 December 2011 02:34

Fabzou
Messages: 76
Registered: November 2010

Member

> In all seriousness though, would routines like GRIDDATA, TRIGRID, etc
> break down for such a large input?

Well, I am not very familiar with GRIDDATA but 1500000 points is not so
large.

It not difficult to find out. It mostly depends on your available
memory, but it seems allright. IDL is just not very very fast. If you
have to do it many times, that's maybe not the best tool for it...

n = 1500000L
lons = Scale_Vector(RANDOMU(seed, n), -180., 180)
lats = Scale_Vector(RANDOMU(seed, n), -90., 90.)
TRIANGULATE, lons, lats, Triangles
data = FLTARR(n)
out = GRIDDATA(lons, lats, data, $
START=[0.05D,0.05D], DIMENSION=[3600,1800], DELTA=[0.1D,0.1D],$
TRIANGLES=triangles, /NEAREST_NEIGHBOR)

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[Message index]

		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: Fabzou on Tue, 13 December 2011 01:58
		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: Jasdeep Anand on Mon, 12 December 2011 05:13
		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: Fabzou on Mon, 12 December 2011 04:08
		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: Jasdeep Anand on Mon, 12 December 2011 02:41
		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: Fabzou on Mon, 12 December 2011 02:34
		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: Jasdeep Anand on Mon, 12 December 2011 01:51
		Re: The best way to bin data to a grid? (may not be an IDL-specific question) By: David Fanning on Sun, 11 December 2011 18:29

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