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undesrstand
2008 May 09
1
Rescaling a column in a matrix based on a certain rows
Hi,
Let say I have this matrix:
> mat<-matrix(cbind(rnorm(20),rnorm(20)), ncol = 2)
And I want to rescale values of column [,1] and [,2] using values from row 1
to 5, such that the values of row 1:5 should be rescale to the same
amplitude (kinda like take the z-score of population from row 1:5). column 1
and 2 are two different samples need to be compared.
I hope I made myself clear