On Jun 29, 2011, at 4:56 PM, katarv wrote:
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.
You should be able to access those values with:
X[1,1,1, ]
or equivalently:
X[1,1,1,1:300]
if you list the values of X,
then they are non zero, but for some reason R
tells that dim(X): NULL
Now that seems a bit odd. What happens if you try:
Y <- X
dim(Y) <- c(64,64,21,300)
Y[ 1, 1, 1, ]
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