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Re: stacking the images according to julian date [message #85597 is a reply to message #85596]

Tue, 20 August 2013 14:17

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Wayne Landsman writes:

> And to be an annoying kibbutzer-- I believe this can also be done without loops:
>
> filenames = File_Search("lndsr.*", COUNT=count)
> year = Fix(StrMid(filenames,15,4))
> doy = Fix(StrMid(filenames,19,3))
> juldates = JulDay(1,doy, year)
>
> ; Sort the Julian dates.
> sorted = Sort(juldates)
>
> ; Sort the filenames in the right order for stacking.
>
> filenames = filenames[sorted]

Even better, if harder for a newby to understand! ;-)

Cheers,

David

P.S. It's even hard for old guys to understand. I almost always have to
read your article on STRMID to understand how it works on arrays.

--
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.")

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[Message index]

		stacking the images according to julian date By: ansul on Tue, 20 August 2013 13:10
		Re: stacking the images according to julian date By: David Fanning on Tue, 20 August 2013 13:27
		Re: stacking the images according to julian date By: wlandsman on Tue, 20 August 2013 14:02
		Re: stacking the images according to julian date By: David Fanning on Tue, 20 August 2013 14:17

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