R: Require a Specific Version of a Package

requireversion {spatstat} | R Documentation

## Require a Specific Version of a Package

### Description

Checks that the version number of a specified package is greater than or equal to the specified version number. For use in stand-alone R scripts.

### Usage

    requireversion(pkg, ver)

### Arguments

`pkg` | Package name.
`ver` | Character string containing version number.

### Details

This function checks whether the installed version of the package `pkg` is greater than or equal to `ver`.

It is useful in stand-alone R scripts, which often require a particular version of a package in order to work correctly.

This function should not be used inside a package: for that purpose, the dependence on packages and versions should be specified in the package description file.

### Value

Null.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au

### Examples

       ## Not run:
          requireversion(spatstat, "1.42-0")

    ## End(Not run)

[Package spatstat version 1.54-0 Index]