Colum-wise cumulative operations (sum, prod, min, max) {Rfast}

Colum-wise cumulative operations (sum, prod, min, max)

Description

Colum-wise cumulative operations (sum, prod, min, max).

Usage

colCumSums(x)
colCumProds(x)
colCumMins(x)
colCumMaxs(x)

Arguments

x

A numerical matrix.

Details

Cumulative mins, maxs, sums and prods are returned.

Value

A matrix with the results. It has one row less than the initial matrix.

Author(s)

Manos Papadakis and Michail Tsagris

R implementation and documentation: Manos Papadakis <[e-mail]> and Michail Tsagris <[e-mail]>.

See Also

colsums, colMedians, colVars

Examples

x <- matrnorm(10, 10)
res<-colCumSums(x)
res<-colCumMins(x)
res<-colCumMaxs(x)
res<-colCumProds(x)