[R] 4D data acsess

[katarv]

Hi Sarah,

I use readMat function, from R.matlab function. 

str(X) tells that 

X : num [1:64, 1:64, 1:21, 1:300]  as I said, the first 3 columns are x,y,z
coordinates. And I need all values in the last column correcponding to a
given (x,y,z) coordinate. 

if you list the values of X, then they are non zero, but for some reason R
tells that dim(X): NULL

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