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R.utils (version 1.18.0)

dataFrame: Allocates a data frame with given column classes

Description

Allocates a data frame with given column classes.

Usage

## S3 method for class 'default':
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

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

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