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REGRESS Question [message #31982]

Wed, 04 September 2002 14:21

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Folks,

I have a client who has asked me to create a pixel density
function between two images and then perform a regression
analysis on the resulting distribution. No problem doing all
this, but she finds that the results of my regression analysis
differ from the same analysis performed in other statistics
packages. In fact, three different packages give the same
answer, and then there is IDL. :-(

For example, if the other packages calculate a "goodness
of fit" of 0.95, IDL might report 0.97.

Here is my question. Are there any known problems with REGRESS?
Or, can I assume that this problem comes from my own mathematical
ignorance?

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		REGRESS Question By: David Fanning on Wed, 04 September 2002 14:21
		Re: REGRESS Question By: Mike Alport on Fri, 06 September 2002 00:26
		Re: REGRESS Question By: julia[1] on Thu, 05 September 2002 11:31
		Re: REGRESS Question By: William Clodius on Thu, 05 September 2002 10:31
		Re: REGRESS Question By: justspam03 on Wed, 22 October 2003 07:01
		Re: REGRESS Question By: wmconnolley on Wed, 22 October 2003 06:03
		Re: REGRESS Question By: Chris Lee on Wed, 22 October 2003 03:44
		Re: regress question By: Wout De Nolf on Mon, 01 December 2008 00:38
		Re: regress question By: mccreigh on Sun, 30 November 2008 23:42
		Re: regress question By: Kenneth P. Bowman on Sat, 29 November 2008 07:58
		Re: regress question By: Brian Larsen on Thu, 27 November 2008 07:37
		Re: regress question By: Wout De Nolf on Thu, 27 November 2008 02:47

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