rowTabulates {matrixStats} | R Documentation |
Tabulates the values in a matrix by row (column).
rowTabulates(x, values=NULL, ...) colTabulates(x, values=NULL, ...)
x |
An integer or raw NxK matrix . |
values |
An vector of values of count. If NULL , all (unique)
values are counted. |
... |
Not used. |
Returns a NxJ (KxJ) matrix
where J is the number of values counted.
Henrik Bengtsson (http://www.braju.com/R/)
x <- matrix(1:5, nrow=10, ncol=5) print(x) print(rowTabulates(x)) print(colTabulates(x)) # Count only certain values print(rowTabulates(x, values=1:3)) y <- as.raw(x) dim(y) <- dim(x) print(y) print(rowTabulates(y)) print(colTabulates(y))