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Padding arrays - vector subscripts not working [message #71586]

Fri, 02 July 2010 11:45

James[2]
Messages: 44
Registered: November 2009

Member

Hello Everyone,

I'm writing a phase correlation routine for image registration. A
preliminary step is padding the images with zeroes. Here's a
simplified example of what I'd like to do:

X = bytarr(5,5,5)
Y = bindgen(2,2,3)
diff = (size(X, /dimensions) - size(Y, /dimensions))/2
X[diff] = Y

Unfortunately, this gives me an error message:

% Array subscript for X must have same size as source expression.

The strange part is, if I type in:

X[1,1,1] = Y

it works fine - but using the array DIFF (whose contents are [1,1,1])
it fails. What's happening? Is there any way I can do this in IDL?

By the way, I would like my final program to work on arrays with any
number of dimensions, so I'd rather avoid a kludge like X[diff[0],
diff[1], diff[2]] = Y.

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[Message index]

		Padding arrays - vector subscripts not working By: James[2] on Fri, 02 July 2010 11:45
		Re: Padding arrays - vector subscripts not working By: James[2] on Wed, 07 July 2010 11:20
		Re: Padding arrays - vector subscripts not working By: penteado on Tue, 06 July 2010 13:48
		Re: Padding arrays - vector subscripts not working By: penteado on Tue, 06 July 2010 12:15

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