On Fri, 22 Oct 2004, Gohara, David wrote:
> Regarding a 3D array this is similar to my last question regarding
> transposing a 2D array. Except this time I was wondering if it's
> possible to do this across the third dimension (that is all values in
> the third direction would become a stride of 1). I thought about this a
> while now, but I've now gotten myself completely confused and am asking
> for help. Previously I took the easy way and used mtrans() as was
> kindly suggested.
>
Well, if you have a solution for 2D, you can generalize it to 3D by
regarding the volume as a stack of slices parallel to the XZ plane,
stacked along the Y axis.
The primary stride of those slices would be 1, and the secondary stride
would be along Z (i.e. index += width*height) rather than along Y (i.e.
index =+ width).
You could transpose each slice exactly the way you did in 2D. Or is there
another complication?
Holger
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