makeDmatrix | R Documentation |
Given a list of factors, return the matrix of dummies as a sparse matrix.
makeDmatrix(fl, weights = NULL)
fl |
list of factors. |
weights |
numeric vector. Multiplied into the rows. |
The function returns the model matrix for a list of factors. This matrix is not used internally by the package, but it's used in some of the documentation for illustrative purposes.
Returns a sparse matrix.
fl <- lapply(1:3, function(i) factor(sample(3, 10, replace = TRUE)))
fl
makeDmatrix(fl, weights = seq(0.1, 1, 0.1))
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