hello,
when i use the function rowMeans, which is sum/n, can i divide it in 2
parts, -> Sum(just positive values)/n and Sum(just negative values)/n. i
need both for my regression but dont know how to do it.
for example we have the matrix
1 1 -1 -1 -> rowMeans([1:3 , 2]) just positive -> 1
1 -1 -1 -2
1/2 here not 0 because we dont use the -1
1 1 1 1
1
thanks for helping
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