Scales a matrix or vector.
genescale returns a scaled version of the input matrix m by applying
the following formula to each column of the matrix:
y[i] = ( x[i] - min(x) ) / ( max(x) - min(x) )
genescale(m, axis=2, method=c("Z", "R"), na.rm=TRUE)m |
Input a matrix or a vector with numeric elements. |
axis |
An integer indicating which axis of |
method |
Either "Z" or "R", indicating whether a Z scaling or a range scaling should be performed. |
na.rm |
A boolean indicating whether |
Either the rows or columns of m are scaled. This is done either
by subtracting the mean and dividing by the standard deviation ("Z")
or by subtracing the minimum and dividing by the range.
A scaled version of the input.
If m is a matrix or a dataframe then the
dimensions of the returned value agree with that of m,
in both cases the returned value is a matrix.
R. Gentleman
m <- matrix(1:12, 4, 3) genescale(m)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.