search for: newthirdcolumn

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2009 Sep 03
1
extract and replace columns of matrices stored in a list
Dear All, I created a list (of length Z) in the following way: my.array <- vector("list", Z) then i assigned a matrix (of T rows by N columns) in each of the elements of the list my.array in the following way: my.array[[i]] <- matrix.data ##( matrix.data has dimensions TxN, and i repeated this command for i from 1 to Z, the matrix.data contains only numeric data) and 1. i