comp.lang.idl-pvwave archive: archive » Re: IDL QUESTIONS(time convection)

Home » Public Forums » archive » Re: IDL QUESTIONS(time convection)

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

Re: IDL QUESTIONS(time convection) [message #78540 is a reply to message #78539]

Tue, 29 November 2011 09:44

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

zolile mtumela writes:

> The aims of these plots are find the spetral peaks. Now I can't read
> the spectrum. It is important for me do sampling rate of 120 seconds.
> Lack of understanding is killing me.
> I need help and suggestions about solving this problem.

Well, I don't know. This code seems to do what you want
to do, with the data you provided this morning.

!p.multi=[0,1,2]
Result = interpol(vel,time,U)
cgplot, (time-time[0])/3600., vel, $
linestyle = 2, xtitle='Hours'
cgplot, (u-u[0])/3600., result, /overplot, $
psym=2, color='red'
N = n_elements(result)
print, N
T = 120
Spec = fft(result)
freq_axis =findgen(N)/(N*T)
cgplot, freq_axis[0:N/2],abs(spec[0:N/2]), $
xrange =[0.001,0.005], xstyle=1
!p.multi=0
end

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: IDL QUESTIONS(time convection) By: zolile mtumela on Tue, 29 November 2011 09:49
		Re: IDL QUESTIONS(time convection) By: David Fanning on Tue, 29 November 2011 09:44
		Re: IDL QUESTIONS(time convection) By: David Fanning on Tue, 29 November 2011 09:31
		Re: IDL QUESTIONS(time convection) By: zolile mtumela on Tue, 29 November 2011 08:35
		Re: IDL QUESTIONS(time convection) By: David Fanning on Tue, 29 November 2011 08:34
		Re: IDL QUESTIONS(time convection) By: zolile mtumela on Tue, 29 November 2011 08:16
		Re: IDL QUESTIONS(time convection) By: David Fanning on Tue, 29 November 2011 05:56

Previous Topic:	IDL Workbench Crashing on Macs
Next Topic:	IDLDoc Error

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 17:22:15 PDT 2025

Total time taken to generate the page: 1.38023 seconds