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Re: IDL Average Value Graphs [message #61568 is a reply to message #61500]

Fri, 18 July 2008 10:20

Jean H.
Messages: 472
Registered: July 2006

Senior Member

David Fanning wrote:
> Jean H writes:
>
>> the algorithm used is a bit fuzzy.... people, including myself, often
>> complain here that some pixels get selected while other do not (make a
>> few tests). As David mentioned, IDLgrROI provides better results. Now it
>> all depends on what you are doing... if you select a few 100 000 pixels,
>> you might not care that much about having a few extra/missing pixels!
>
> I found the discussion we were having way back in 2001.
> And there was even a test program that shows the problem.
> (It's still a problem, I guess, as I just ran it in IDL 7.0.3.)
>
> http://tinyurl.com/58cv6k
>
> Cheers,
>
> David
>
> P.S. Does time pass exponentially faster as you age? Weird. :-(
>

hum... it was in November 2006 indeed :-) ... but I still feel as if it
was yesterday... maybe because this issue was painful at this time (you
know, your program is "almost" done, with "just" a few bugs/features to
fix... and then you spend 3 weeks on a "detail"...)

Jean

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[Message index]

		IDL Average Value Graphs By: andybohn on Tue, 15 July 2008 13:51
		Re: IDL Average Value Graphs By: David Fanning on Thu, 17 July 2008 08:33
		Re: IDL Average Value Graphs By: andybohn on Thu, 17 July 2008 10:55
		Re: IDL Average Value Graphs By: Jeremy Bailin on Wed, 16 July 2008 11:18
		Re: IDL Average Value Graphs By: andybohn on Thu, 17 July 2008 18:11
		Re: IDL Average Value Graphs By: David Fanning on Thu, 17 July 2008 16:02
		Re: IDL Average Value Graphs By: Jean H. on Fri, 18 July 2008 10:20
		Re: IDL Average Value Graphs By: Jean H. on Thu, 17 July 2008 14:52
		Re: IDL Average Value Graphs By: David Fanning on Thu, 17 July 2008 12:09
		Re: IDL Average Value Graphs By: andybohn on Thu, 17 July 2008 11:02

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