R.utils (version 2.3.0)

dataFrame: Allocates a data frame with given column classes

Description

Allocates a data frame with given column classes.

Usage

"dataFrame"(colClasses, nrow=1, ...)

Arguments

colClasses

A character vector of column classes, cf. read.table.

nrow

An integer specifying the number of rows of the allocated data frame.

...

Not used.

Value

Returns an NxK data.frame where N equals nrow and K equals length(colClasses).

See Also

data.frame.

Examples

  df <- dataFrame(colClasses=c(a="integer", b="double"), nrow=10)
  df[,1] <- sample(1:nrow(df))
  df[,2] <- rnorm(nrow(df))
  print(df)