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schmea
2008 Apr 16
1
efficiently replacing values in a matrix
Hello all,
I should probably know this by now... Anyway:
I have a large matrix (dim(data) is 3000 18000). In each element are
one of the following character strings "0/0", "1/1", "1/2", "2/2". I
wanted to replace "0/0" with NA and the other three with 0,1,2
respectively. To accomplish just the first of these four steps I did
this: