| Re: What? You can't histogram a string array? [message #51544 is a reply to message #51543] |
Tue, 28 November 2006 10:43   |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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JD Smith writes:
> This is not good, and much worse than a minor nitpick. The
> IND_INT_SORT algorithm relies on SORT doing the right thing. That is,
> for two identical elements in the concatenated vector [a,b], SORT
> should place the first one first, i.e. the matching elements from 'a'
> will show up before those from 'b'. That's the only reason it
> works. There was always the concern that IDL's SORT would change and
> this would no longer be the case (the element from b would come
> first), in which case the algorithm would be broken.
In running the test program, I get immediate out-of-bounds
errors with IDL's SORT routine. But nothing of the sort
(a pun!) with the NASA BSORT routine I always use when I
need to sort something "for real".
Running on Windows XP.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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