New package pixmap

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From: Friedrich Leisch (
Date: Wed 12 Sep 2001 - 02:52:42 EST

Message-id: <>

A new package called `pixmap' has been released on CRAN. From the

Package: pixmap
Version: 0.2-1
Title: Bitmap Images (``Pixel Maps'')
Depends: R (>= 1.3)
Author: Friedrich Leisch and Roger Bivand
Maintainer: Friedrich Leisch <>
Description: Functions for import, export, plotting and other
  manipulations of bitmapped images.
License: GPL version 2.

The package is intended to provide the central low-level support for
reading/writing/plotting bitmapped images. It replaces the read.pnm
and write.pnm functions of package e1071. Currently only PNM images
are supported for import/export, but we want to add other filter real

A rich class structure is already in place, allowing for grey, rgb and
indexed images together with conversions between all three
formats. The classes allow images also to have a coordinate system
attached, such that, e.g., locator() can be used meaningfully on
geographical maps.

This is a first release, all comments and feedback are more than
welcome (thanks to Jonathan Marchini for valuable feedback on the
first development version).

Fritz Leisch

                        Friedrich  Leisch 
Institut für Statistik                     Tel: (+43 1) 58801 10715
Technische Universität Wien                Fax: (+43 1) 58801 10798
Wiedner Hauptstraße 8-10/1071
A-1040 Wien, Austria   

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