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Re: Padding arrays - vector subscripts not working [message #71651 is a reply to message #71575]

Tue, 06 July 2010 11:38

James[2]
Messages: 44
Registered: November 2009

Member

OK, I tried using your method, but it seemed to only take the first
dimension of Y. Here's the function I used:

function pad, array, dims

;error checking, etc. removed for more compact newsgroup post

type = size(array, /type)
out = make_array(dims, type=type)

;calculate where to put the original array in the new
sz = size(array, /dimensions)
diff = (dims - sz)/2

strides = [1L, product(dims, /integer, /cumulative)]
start = total(strides*diff, /integer)

out[start] = array
return, out
end

And here is an example of its output:

IDL> test = replicate(4,3,3)
IDL> padtest = pad(test, [5,6])
IDL> print, padtest
0 0 0 0 0
0 4 4 4 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0

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[Message index]

		Re: Padding arrays - vector subscripts not working By: penteado on Sat, 03 July 2010 14:01
		Re: Padding arrays - vector subscripts not working By: James[2] on Sat, 03 July 2010 13:52
		Re: Padding arrays - vector subscripts not working By: penteado on Fri, 02 July 2010 13:01
		Re: Padding arrays - vector subscripts not working By: penteado on Fri, 02 July 2010 12:29
		Re: Padding arrays - vector subscripts not working By: James[2] on Fri, 02 July 2010 11:51
		Re: Padding arrays - vector subscripts not working By: James[2] on Tue, 06 July 2010 11:38

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