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Re: Reading large files with restore [message #85979 is a reply to message #85948]

Mon, 23 September 2013 05:48

Sir Loin Steak
Messages: 42
Registered: January 2012

Member

On Friday, 20 September 2013 17:46:42 UTC+1, Phillip Bitzer wrote:
> Let me see if I understand:
>
>
>
> 1) You have a save file with a *lot* of data.
>
> 2) You'd like to restore and work with some of the data.
>
> 3) It takes a long time to restore everything in the file and extract just what you want.
>
>
>
> If this is correct, then the IDLSave_File object is what you're after.
>
>
>
> Consider a save file created with :
>
> SAVE, var1, var2, file='idl.sav'
>
>
>
> Then you can get *just* var1 with
>
> sObj = OBJ_NEW('IDL_Savefile', 'idl.sav')
>
> sObj->RESTORE, 'var1'
>
> OBJ_DESTROY, sObj ;when you're done with the file
>
>
>
> There are ways to get the variable names if you don't know them a priori. Check out:
>
> http://www.exelisvis.com/docs/IDL_Savefile.html

Thanks very much, that sounds like exactly what I want! I'll give it a go now.

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[Message index]

		Reading large files with restore By: Sir Loin Steak on Fri, 20 September 2013 08:18
		Re: Reading large files with restore By: David Fanning on Fri, 20 September 2013 08:25
		Re: Reading large files with restore By: Sir Loin Steak on Fri, 20 September 2013 08:30
		Re: Reading large files with restore By: David Fanning on Fri, 20 September 2013 08:33
		Re: Reading large files with restore By: Sir Loin Steak on Fri, 20 September 2013 08:50
		Re: Reading large files with restore By: David Fanning on Fri, 20 September 2013 09:00
		Re: Reading large files with restore By: Phillip Bitzer on Fri, 20 September 2013 09:46
		Re: Reading large files with restore By: Sir Loin Steak on Mon, 23 September 2013 05:48
		Re: Reading large files with restore By: Paul Van Delst[1] on Tue, 24 September 2013 10:56

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