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

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)