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Re: Changing the order of true color images [message #29062 is a reply to message #28849]

Mon, 28 January 2002 05:55

Alex Schuster
Messages: 124
Registered: February 1997

Senior Member

"Liam E. Gumley" wrote:

> Have you tried the TRANSPOSE function?
>
> For example, to change the dimensions from (3, m, n) to (m, n, 3):
>
> a = transpose(temporary(a), [1, 2, 0])

Just a note: a = transpose( a, [1, 2, 0] ) is the same, the temporary()
function does not save memory when used inside a function.

IDL> a=findgen(1000,1000,10)
IDL> help, /mem
heap memory used: 40206937, max: 40206965, gets: 237,
frees: 96
IDL> a=transpose(temporary(a), [ 1,2,0])
IDL> help, /mem
heap memory used: 40207016, max: 80207156, gets: 242,
frees: 99

IDL> a=findgen(1000,1000,10)
IDL> help, /mem
heap memory used: 40206821, max: 40206849, gets: 231,
frees: 93
IDL> a=transpose(a, [ 1, 2, 0] )
IDL> help, /mem
heap memory used: 40206892, max: 80207040, gets: 236,
frees: 96

Alex
--
Alex Schuster Wonko@planet-interkom.de
alex@pet.mpin-koeln.mpg.de

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[Message index]

		Re: Changing the order of true color images By: ronn on Wed, 16 January 2002 05:17
		Re: Changing the order of true color images By: Martin Downing on Tue, 15 January 2002 02:01
		Re: Changing the order of true color images By: ronn on Mon, 14 January 2002 14:25
		Re: Changing the order of true color images By: Liam E. Gumley on Mon, 14 January 2002 07:22
		Re: Changing the order of true color images By: Alex Schuster on Mon, 28 January 2002 05:55

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