Description
Utility function to sum over group labels
Usage
sumGroups(X, y, MARGIN = 2)# S3 method for dgCMatrix
sumGroups(X, y, MARGIN = 2)
# S3 method for matrix
sumGroups(X, y, MARGIN = 2)
Arguments
MARGIN
whether observations are rows (=2) or columns (=1)
Value
Matrix of groups by features