comp.lang.idl-pvwave archive: archive » Clsuter analysis wiht IDL

Home » Public Forums » archive » Clsuter analysis wiht IDL

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Clsuter analysis wiht IDL [message #23851]

Fri, 23 February 2001 07:09

dw
Messages: 10
Registered: February 2001

Junior Member

I am trying to use the cluster analysis utility in IDL, and I can't work it
out. Perhaps due to my lack of knowledge in the statistical field.....

I have a 2D-image (658x658) with a single band of info (CT x-ray
intentities) that I want to classify (into three classes) using cluster
analysis. I assume I have to use the CLUST_WTS function first and then the
CLUSTER function, but I can't work it out.
The on-line help isn't very helpful on this topic....

If I use
weights = clust_wts(image, n_clusters=3), with image= intarr(658x658) I get
alot of floating errors.
Do I need to reform the image to (658x658,1) before using the clust_wts
function? Doesn't seem to work either, though. Also how do I get the
cluster numbers back as an overlay of my image? so that I can actually see
the result of the classification.

Has anybody worked on cluster analysis using IDL?

Thanks for any help!
Dorthe

--
Posted from mail.isva.dtu.dk [192.38.88.3]
via Mailgate.ORG Server - http://www.Mailgate.ORG

Report message to a moderator

[Message index]

		Clsuter analysis wiht IDL By: dw on Fri, 23 February 2001 07:09
		Re: Clsuter analysis wiht IDL By: Benno Puetz on Wed, 28 February 2001 09:09
		Re: Clsuter analysis wiht IDL By: Gonzalo Rojas on Fri, 02 March 2001 09:45
		Re: Clsuter analysis wiht IDL By: Craig Markwardt on Thu, 01 March 2001 09:43

Previous Topic:	Communication between different widget bases
Next Topic:	Re: JULDAY 5.4 not same as 5.3?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 18:34:57 PDT 2025

Total time taken to generate the page: 1.36066 seconds