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Re: how to get the index of the maximum element in each row for a 2D matrix efficiently [message #36295 is a reply to message #36290]

Fri, 29 August 2003 15:23

xje4e
Messages: 18
Registered: February 2002

Junior Member

> Starting with v5.6, MAX will do this for you with its own DIMENSION
> keyword. Remember that in IDL dimensions start, perversely, with 1,
> as opposed to everything else, which is 0 based. As of now we can
> thread the following:
>
> TOTAL
> PRODUCT
> MIN
> MAX
> MEDIAN
>
> The only remaining operators I wish could be dimensionally threaded
in
> this way are AND, OR, and especially the new && and ||
> short-circuiting ops.
>
> JD

Oh, Yeah! Finally they did it, although it has been implemented in
matlab for a long time. And I found it in IDL 5.5 in ENVI3.5 too.

Cheers,

Jin

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[Message index]

		Re: how to get the index of the maximum element in each row for a 2D matrix efficiently By: JD Smith on Tue, 02 September 2003 10:12
		Re: how to get the index of the maximum element in each row for a 2D matrix efficiently By: henrygroe on Sat, 30 August 2003 13:33
		Re: how to get the index of the maximum element in each row for a 2D matrix efficiently By: the_cacc on Fri, 29 August 2003 17:33
		Re: how to get the index of the maximum element in each row for a 2D matrix efficiently By: xje4e on Fri, 29 August 2003 15:23
		Re: how to get the index of the maximum element in each row for a 2D matrix efficiently By: JD Smith on Fri, 29 August 2003 12:05

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