slice: Helper Routine

In cmrutils: Misc Functions of the Center for Mathematical Research

Description

Slices array by specified dimension.

Usage

slice(x, MARGIN, n)

Arguments

x	An array-like object.
MARGIN	An integer giving the dimension to slice by.
n	Number of slice.

Value

Returns array of dimensions dim(x)[-MARGIN]. The corresponding dimnames are preserved.

See Also

slice.index.

Examples

  x <- 1:10
  slice(x, 1, 1)

  x <- matrix(1:4, 2, 2)
  rownames(x) <- c("Row 1", "Row 2")
  colnames(x) <- c("Col 1", "Col 2")
  x
  slice(x, 1, 1)
  slice(x, 1, 2)
  slice(x, 2, 1)
  slice(x, 2, 2)

  x <- array(1:24, dim = c(2, 3, 4))
  dimnames(x) <- list(letters[1:2], letters[3:5], letters[6:9])
  x
  slice(x, 1, 1) 
  slice(x, 2, 1)
  slice(x, 3, 1)

cmrutils documentation built on May 1, 2019, 7:59 p.m.