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Pixelwise temporal trend, problem with REFORM [message #75293]

Wed, 23 February 2011 04:04

Giuseppe Papa
Messages: 27
Registered: February 2010

Junior Member

Hi All, I am trying to perform multi-temporal pixelwise linear regression on stack images using LINFIT(X,Y). For that both X and Y should have the same dimension. My stack image = Y and has 3 Dims

my_stack=FINDGEN(n_elements(all_files),xsize, ysize)

Whereas X refers to the time and is defined as

x=INDGEN(n_elements(all_files))
X INT=Array[4]
IDL> print, x
0 1 2 3
I am trying to use REFORM to rescale X to the size of Y but unsuccessfully
Error message: REFORM: New subscripts must not change the number elements in X.
I also tried to do a combination of reform and rebin but rebin allows to multiply by the factor of the X Dim.

Any suggestion would be much appreciated
Thanks, Aga

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