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subseting a 3D array based on values from a 2D array [message #87484]

Fri, 07 February 2014 05:25

eva.ivits-wasser
Messages: 8
Registered: October 2011

Junior Member

Hi everyone,

I have a 2D array (A) with dimensions of [ns,nl] (where ns=number of columns and nl=number of lines) and a 3D array (B) with dimensions of [ns,nl,nb] (where nb=number of bands). A is a classification image whereas B is a time-series, both have the same number of samples and lines.
I'd need to find a certain value in A, let's say 100 (which occurs several times) and then I want to subset those elements of B which "overlaps" with A, i.e. have the same position as A.

I've tried the where function but that gives me the one dimensional subscript of A and I don't quite manage to index B based on this subscript...

I've tried array_indices but did not get further with that either.

Any suggestions please?

Thanks,
Eva

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[Message index]

		subseting a 3D array based on values from a 2D array By: eva.ivits-wasser on Fri, 07 February 2014 05:25
		Re: subseting a 3D array based on values from a 2D array By: David Fanning on Fri, 07 February 2014 05:37
		Re: subseting a 3D array based on values from a 2D array By: eva.ivits-wasser on Fri, 07 February 2014 06:11
		Re: subseting a 3D array based on values from a 2D array By: David Fanning on Fri, 07 February 2014 07:11

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