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Re: efficient comparing 1D and 3D arrays [message #60679 is a reply to message #60678]

Wed, 11 June 2008 09:48

Jelle
Messages: 19
Registered: May 2008

Junior Member

On Jun 11, 5:37 pm, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
wrote:

> Hi,
> Yes you can...do something like:
> nb=3
> ns=5
> nl=5
> imgData = fix(randomu(seed,nb,nl,ns)*100) ;--> doing ns,nl,nb makes
> more sense than nb,ns,nl... for mental representation at least (and if
> you print it!)
>
> minVals = [15,30,12] ;Min val in each band
> maxVals = [75,80,60] ;Max val in each band
>
> allMin = rebin(minVals, nb,nl,ns) ;repeat the min band value for every
> pixels in each band
> allMax = rebin(maxVals, nb,nl,ns)
>
> goodPixels = where(imgData gt allMin and imgData lt allMax)
>
> ==> returns the indexes of imgData that satisfy the condition in EVERY band.
>
> Jean

cool. I'll harvest some beans in the garden, have dinner, pour a red,
have a potter and let the results of my pottering seep through!

J
PS: Yes dinner.. I am in Europe: Dinner time, 6PM in UK

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[Message index]

		Re: efficient comparing 1D and 3D arrays By: Jelle on Wed, 11 June 2008 16:05
		Re: efficient comparing 1D and 3D arrays By: Chris[5] on Wed, 11 June 2008 14:24
		Re: efficient comparing 1D and 3D arrays By: Jelle on Wed, 11 June 2008 10:29
		Re: efficient comparing 1D and 3D arrays By: Jelle on Wed, 11 June 2008 09:48
		Re: efficient comparing 1D and 3D arrays By: Jean H. on Wed, 11 June 2008 09:37
		Re: efficient comparing 1D and 3D arrays By: Jelle on Wed, 11 June 2008 08:46
		Re: efficient comparing 1D and 3D arrays By: Craig Markwardt on Wed, 11 June 2008 08:09
		Re: efficient comparing 1D and 3D arrays By: Jean H. on Wed, 11 June 2008 13:46
		Re: efficient comparing 1D and 3D arrays By: Jean H. on Wed, 11 June 2008 16:21

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