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gridding large amounts of data [message #2805]

Wed, 05 October 1994 13:40

dan
Messages: 27
Registered: March 1993

Junior Member

I have a large table of data in the form

LATITUDE LONGITUDE VALUE

There can be a million rows of entries in this 3 colum table.
I would like to put the data into a 1x1 degree array (fltarr(360,180))
If there are multiple entries for a particular longitude and latitude
I would like to sum the values. I could do this in an ugly do loop that
looked like

data=fltarr(360,180)
for i=1,num do $
data(longitude(i),latitude(i)) = data(longitude(i),latitude(i)) + value(i)

This works fine for small values of num, but for num>32,767 I get an error
saying my do loop index is too large. Can I write do loops with limits
greater than 32,767 ?? Could I rewrite this in vector syntax using the
where statement ??
--
************************************************************ ***
** Dan Bergmann dbergmann@llnl.gov **
** Global Climate Research fax (510) 422-5844 **
** Lawrence Livermore National Lab human (510) 423-6765 **

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[Message index]

		gridding large amounts of data By: dan on Wed, 05 October 1994 13:40
		Re: gridding large amounts of data By: candey on Wed, 05 October 1994 17:06
		Re: gridding large amounts of data By: lmudge on Sun, 09 October 1994 17:47
		Re: gridding large amounts of data By: agraps on Fri, 07 October 1994 08:29
		Re: gridding large amounts of data By: agraps on Thu, 06 October 1994 22:44
		Re: gridding large amounts of data By: bowman on Sat, 15 October 1994 11:59
		Re: gridding large amounts of data By: landers on Thu, 06 October 1994 05:54
		Re: gridding large amounts of data By: landers on Thu, 06 October 1994 07:44

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