comp.lang.idl-pvwave archive: archive » Spatial and temporal image correlation

Home » Public Forums » archive » Spatial and temporal image correlation

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

Re: Spatial and temporal image correlation [message #85550 is a reply to message #85543]

Thu, 15 August 2013 11:16

Cornelio Zolin
Messages: 5
Registered: August 2013

Junior Member

On Thursday, August 15, 2013 12:19:01 PM UTC-4, Cornelio Zolin wrote:
> Dear all,
>
> Hi all,
>
> I have just started using IDL and I’m having hard times even with simple tasks. I’m trying to do the following task:
>
>
>
> I have 12 folders (2001, 2002 ….2012) and in each folder I have 35 files .dat of anomalies (7 months NDVI, 7 months Surface temperature and so on) and I would like to do a correlation (pixel by pixel) for each index in each month for each year.
>
>
>
> After that I want to make one plot per year: each index in a different column and each row representing a different month.
>
>
>
> I started writing the code bellow, but I’m confused now. I think the next step would be REFORM the images, so for each image I will have a vector that I could use to do the correlation.
>
> Is there anyone that could help me on that?
>
>
>
> Thanks a lot,
>
>
>
>
>
> PRO ImgCorr,
>
> CD, 'C:\Anomalies\year'
>
> theseFiles = FindFile('*.dat', Count=numFiles)
>
> Print, 'Number of files found: ', numFiles
>
> FOR j=0,numFiles-1 DO BEGIN
>
> OpenR, lun, theseFiles(j), /Get_Lun
>
> File = fltarr(620, 500)
>
> ReadU, lun, File
>
> JustNumbers= where(File eq -9999, count)
>
> File[JustNumbers]=!VALUES.F_NAN
>
> *
>
> *
>
> *
>
> *
>
> Free_Lun, lun
>
> ENDFOR
>
> END

Thank you folks,
I'll try to move forward using your suggestions.

Zolin

Report message to a moderator

[Message index]

		Spatial and temporal image correlation By: Cornelio Zolin on Thu, 15 August 2013 09:19
		Re: Spatial and temporal image correlation By: Andy Sayer on Thu, 15 August 2013 10:48
		Re: Spatial and temporal image correlation By: David Fanning on Thu, 15 August 2013 10:53
		Re: Spatial and temporal image correlation By: David Fanning on Thu, 15 August 2013 10:54
		Re: Spatial and temporal image correlation By: Cornelio Zolin on Thu, 15 August 2013 11:16
		Re: Spatial and temporal image correlation By: David Fanning on Thu, 15 August 2013 11:21
		Re: Spatial and temporal image correlation By: Phillip Bitzer on Thu, 15 August 2013 12:44
		Re: Spatial and temporal image correlation By: Cornelio Zolin on Fri, 16 August 2013 06:47

Previous Topic:	IDL routines for Rayleigh optical depth/US Standard Atmospheres?
Next Topic:	Map issue wth IDL8 new graphics: conformal or equal-area maps in rectangular shape

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 18:55:56 PDT 2025

Total time taken to generate the page: 0.00447 seconds