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Re: WHERE approaching Flatland [message #34090 is a reply to message #34083]

Tue, 18 February 2003 13:48

Wonko[3]
Messages: 9
Registered: February 2003

Junior Member

sean@me.wustl.edu (Sean Raffuse) wrote:

> Is there are 2-d version of where?

> I would like to do this:

> bad = where(Array[*,*,0] GT Array[*,*,5])

> Array[bad,1:5] = Array[bad,0]

I do these things like this:

xy = (size(Array,/dim))[0] * (size(Array,/dim))[1]
for i = 1, 5 do Array[ bad + i*xy ] = Array[bad]

> I know that doesn't work, but after having spent some time with IDL,
> I'm allergic to loops.

Ummm... this should work:

n = n_elements( bad )
Array[ rebin(bad,n,5) + transpose(rebin((lindgen(5)+1)*xy,5,n)) ] =
rebin( array[bad], n, 5 )

Alex
--
Alex Schuster Wonko@wonkology.org PGP Key available
alex@pet.mpin-koeln.mpg.de

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[Message index]

		Re: WHERE approaching Flatland By: Haje Korth on Wed, 19 February 2003 04:50
		Re: WHERE approaching Flatland By: Wonko[3] on Tue, 18 February 2003 13:48
		Re: WHERE approaching Flatland By: David Fanning on Tue, 18 February 2003 12:15

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