polyclip

This repository holds the contributed R-package polyclip, which is an R port of Angus Johnson's library Clipper for polygon clipping.

Version

This version of polyclip is derived from Clipper C++ library version 6.4.0 [r496] which was obtained from the Sourceforge repository (click Code then Download snapshot). Minor changes have been made to the C++ code to satisfy the requirements for R packages (namely, data type declarations must be portable, and error messages must go through R's error handler).

Installation

The current official release of polyclip is available on CRAN and can be downloaded and installed automatically using the R command install.packages.

The code in this repository is the development version, which may be newer than the official release. The easiest way to install the development version of polyclip from github is through the remotes package:

require(remotes)
install_github('baddstats/polyclip')

If you don't have remotes installed you should first run

install.packages('remotes')

Bug reports

Users of polyclip are encouraged to report bugs here (go to issues in the menu above, and press new issue to start a new bug report or feature request).

Making your own changes

Feel free to fork polyclip, make changes to the code, and ask us to include them in the package by making a github pull request.