memisc: sample-methods – R documentation

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sample-methods

Take a Sample from a Data Frame-like Object

Description

The methods below are convenience short-cuts to take samples from data frames and data sets. They result in a data frame or data set, respectively, the rows of which are a sample of the complete data frame/data set.

Usage

## S4 method for signature 'data.frame'
sample(x, size, replace = FALSE, prob = NULL)
## S4 method for signature 'data.set'
sample(x, size, replace = FALSE, prob = NULL)
## S4 method for signature 'importer'
sample(x, size, replace = FALSE, prob = NULL)

Arguments

`x`	a data frame or data set.
`size`	an (optional) numerical value, the sample size, defaults to the total number of rows of `x`.
`replace`	a logical value, determines whether sampling takes place with or without replacement.
`prob`	a vector of sampling probabities or NULL.

Value

A data frame or data set.

Examples

for(.i in 1:4)
  print(sample(iris,5))

memisc

Management of Survey Data and Presentation of Analysis Results

v0.99.27.3

GPL-2

Authors

Martin Elff (with contributions from Christopher N. Lawrence, Dave Atkins, Jason W. Morgan, Achim Zeileis)

Initial release

2020-11-18