cleanup.Rd
Eliminates an zeros in a sparse matrix.
cleanup(x, eps = getOption("spam.eps"))
a sparse matrix of class spam
.
numeric scalar > 0. Smaller entries are coerced to zero.
A sparse matrix may still contain zeros. This function (aliased
to as.spam
) filters these values.
This often causes confusion when testing such matrices for symmetry
or comparing apparently equal matrices with all.equal
(see ‘Examples’ below.