comp.lang.idl-pvwave archive: archive » Re: CLUSTER of atmospheric trajectories

Home » Public Forums » archive » Re: CLUSTER of atmospheric trajectories

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

Re: CLUSTER of atmospheric trajectories [message #75542 is a reply to message #75528]

Fri, 18 March 2011 06:15

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Chicho writes:

> We are working with atmospheric trajectories at 500mm height. We have
> 1500 trajectories (Time, latitute and longitude) and we would like to
> use the cluster analysis to evaluate the centroides of that. We know
> the CLUST_WTS function but I don't understand what is the format of
> the input file. Could anyone help us?

I've never done cluster analysis, but it looks to
me like you have three variables and 1500 observations.
So, you would create a 3x1500 array as input:

array = Transpose([[time], [lon], [lat]])

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.")

Report message to a moderator

[Message index]

		Re: CLUSTER of atmospheric trajectories By: Chicho on Tue, 22 March 2011 00:56
		Re: CLUSTER of atmospheric trajectories By: David Fanning on Fri, 18 March 2011 06:15

Previous Topic:	Re: Avoiding multiple FOR loops
Next Topic:	mercurial teaming with idlde

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Tue Apr 28 12:15:39 PDT 2026

Total time taken to generate the page: 0.56082 seconds