comp.lang.idl-pvwave archive: archive » Re: Empirical orthogonal function in IDL

Home » Public Forums » archive » Re: Empirical orthogonal function in IDL

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

Re: Empirical orthogonal function in IDL [message #82560 is a reply to message #82557]

Fri, 21 December 2012 14:43

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

mkmvarma@gmail.com writes:

> Thanks, David. I looked it up and understand your code except the last part of the code where PC of mode 1. The array 'pc[mode-1,*]' has elements 2592 but the array 'years' has only 21 elements. Could you please explain me how we can plot a timeseries plot using the principal component array.

Well, that is the Wilks trick I mention in the article. I
probably didn't understand it well enough four years ago
when I wrote the article to explain it any better than
I did. I certainly don't remember the trick now! I would,
however, get over to the library and find that book. It
is a good one!

To prove to myself it worked, I programmed up the example
the slow way (25 minutes or so) and the fast way (half
a second). I do remember that the results were identical,
so I guess I trusted the result, even if I didn't understand
it completely. :-)

Cheers,

David

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

Report message to a moderator

[Message index]

		Re: Empirical orthogonal function in IDL By: David Fanning on Fri, 21 December 2012 17:00
		Re: Empirical orthogonal function in IDL By: mkmvarma on Fri, 21 December 2012 16:35
		Re: Empirical orthogonal function in IDL By: David Fanning on Fri, 21 December 2012 14:43
		Re: Empirical orthogonal function in IDL By: mkmvarma on Fri, 21 December 2012 14:21
		Re: Empirical orthogonal function in IDL By: David Fanning on Thu, 20 December 2012 15:06

Previous Topic:	DejaVuSans Font and the Sun Symbol
Next Topic:	Re: histogram bin edges

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Nov 29 23:06:27 PST 2025

Total time taken to generate the page: 2.08605 seconds