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zero-padding an array of arbitrary dimensionality (replacing execute in vm) [message #54897]

Thu, 19 July 2007 08:51

Vince Hradil
Messages: 574
Registered: December 1999

Senior Member

I would like to zero-pad an array programmatically without knowing in
advance what the dimensionality is of the array.

For example, in 2D, for data = some fltarr (31,31) I could do
dims = size(data,/dimensions)
zpad = fltarr(dims[0]+1,dims[1]+1)
zpad[1,1] = data

For arb. dimensionality I have:

dsize = size(data)
ndim = dsize[0]
dim = dsize[1:ndim]
dtmp = make_array(dim+2,value=0,type=dsize[ndim+1])

cmd = 'dtmp['
for n=0L, ndim-1 do cmd = cmd+'1,'
cmd = strmid(cmd,0,strlen(cmd)-1)+']=data'
result = execute(cmd)

But this won't work in the vm. So I need to somehow figure out the
position of the [1,1,1,...] index for an arbitrary dimensionality.

Clear enough? TIA!
Vince

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[Message index]

		zero-padding an array of arbitrary dimensionality (replacing execute in vm) By: Vince Hradil on Thu, 19 July 2007 08:51
		Re: zero-padding an array of arbitrary dimensionality (replacing execute in vm) By: Vince Hradil on Fri, 20 July 2007 06:34
		Re: zero-padding an array of arbitrary dimensionality (replacing execute in vm) By: JD Smith on Thu, 19 July 2007 19:14

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