mosaic (version 0.4-1)

columns: return a vector of row or column indices

Description

return a vector of row or column indices

Usage

columns(x, default = c())
  rows(x, default = c())

Arguments

x

an object that may or may not have any rows or columns

default

what to return if there are no rows or columns

Value

• if x has rows or columns, a vector of indices, else default

Examples

dim(HELPrct)
columns(HELPrct)
rows(HELPrct)
columns(NULL)
columns("this doesn't have columns")