Hi,
I have a quick question regarding grouping data in R. I have the following matrix,
A = 0 1 1 0
1 0 0 1
1 0 0 1
1 1 0 0
1 0 0 1
0 1 1 0
I would like to learn how I can group the data on unique rows of A and also count the
number of times the row occurred. The command unique(A) provides a matrix with the
unique rows, i.e., B
B = 0 1 1 0
1 0 0 1
1 1 0 0
but I am also interested in learning how I can count the number of unque rows too. The
result can be in either one or two matrices, e.g.,
B = 0 1 1 0
1 0 0 1
1 1 0 0
Count = 1
3
2
or,
C = 0 1 1 0 1
1 0 0 1 3
1 1 0 0 2
Thanks in advance.
Rob Kissell
[EMAIL PROTECTED]
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