Returns a vector whose elements are the cumulative sums, products, minima or maxima of the elements of the argument.
cumsum(x)
cumprod(x)
cummax(x)
cummin(x)a numeric or complex (not cummin or cummax)
object, or an object that can be coerced to one of these.
A vector of the same length and type as x (after coercion),
except that cumprod returns a numeric vector for integer input
(for consistency with *). Names are preserved.
An NA value in x causes the corresponding and following
elements of the return value to be NA, as does integer overflow
in cumsum (with a warning).
cumsum and cumprod are S4 generic functions:
methods can be defined for them individually or via the
Math group generic.
cummax and cummin are individually S4 generic functions.
These are generic functions: methods can be defined for them
individually or via the Math group generic.
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)
The New S Language.
Wadsworth & Brooks/Cole. (cumsum only.)
# NOT RUN {
cumsum(1:10)
cumprod(1:10)
cummin(c(3:1, 2:0, 4:2))
cummax(c(3:1, 2:0, 4:2))
# }
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