Math group functions to
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# ceiling(x) # floor(x) # exp(x, base = exp(1)) # log(x, base = exp(1)) # sqrt(x) # abs(x) # cumprod(x) # cumsum(x) # cos(x) # sin(x) # tan(x) # acosh(x) ...
positive number. The base with respect to which logarithms
are computed. Defaults to
It is important to note that the zero entries do not enter the
structurebased=FALSE. The operations are performed on the stored non-zero
elements. This may lead to differences if compared with the same
operation on a full matrix.
If the option
spam.structurebased=TRUE, all functions operate on the vector
[email protected] and return the
structurebased=FALSE, the result is identical to
as.matrix(x) input and an
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