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Re: isodensity contours [message #75283 is a reply to message #75281]

Wed, 23 February 2011 10:39

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Gray writes:

> I have a scatterplot with a bunch of points on it. I'd like to plot
> isodensity contours to include 99%, 90%, 75%, and 50% of my points.
> How do I set up my data to give to cgContour? Thanks!

The simple answer is, you set up your data the way
you *always* set up your data!

Don't you really want to know, how do I choose
some percentage of my points? And, that question
we can't answer, because you haven't indicated
what the criteria are going to be. I guess
you will have to decide. Randomly, distance
from the centroid, based on height above surface,
etc. Lot's of possibilities here.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: isodensity contours By: David Fanning on Wed, 23 February 2011 18:02
		Re: isodensity contours By: Gray on Wed, 23 February 2011 17:48
		Re: isodensity contours By: David Fanning on Wed, 23 February 2011 17:43
		Re: isodensity contours By: Gray on Wed, 23 February 2011 17:30
		Re: isodensity contours By: Gray on Wed, 23 February 2011 16:34
		Re: isodensity contours By: Gray on Wed, 23 February 2011 13:25
		Re: isodensity contours By: Jeremy Bailin on Wed, 23 February 2011 12:04
		Re: isodensity contours By: pgrigis on Wed, 23 February 2011 12:24
		Re: isodensity contours By: Gray on Wed, 23 February 2011 12:06
		Re: isodensity contours By: pgrigis on Wed, 23 February 2011 11:12
		Re: isodensity contours By: David Fanning on Wed, 23 February 2011 10:39
		Re: isodensity contours By: pgrigis on Thu, 24 February 2011 08:28

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