CartaPGM

CartaPGM is a plug-in for Photoshop on Macintosh that reads and writes files in the Portable Gray Map (PGM) format.

CartaPGM writes the following formats:

  • PGM 8-bit grayscale images
  • PGM 16-bit grayscale images

CartaPGM reads the following formats:

  • PGM 8-bit grayscale images
  • PGM 16-bit grayscale images
  • PBM 1-bit black and white images
  • PPM 24-bit RGB color images

Download

You can download CartaPGM here for free.

Installation

Decompress the ZIP file and drag the plug-in to the Plug-Ins folder in the Photoshop application folder.

Usage

Once the plug-in is installed, open PGM, PBM or PPM files with the normal File - Open menu command. To write files in the PGM format, use File - Save and select Portable Gray Map (PGM) in the Format menu.

Known limitations

CartPGM only runs on Macintosh.
CartaPGM does not run on Mac OS X 10.5 or on old 68k Macs.
CartaPGM cannot write PGM files in 16 bit mode with Photoshop version 4 (the other file formats with PS 4 are supported).
CartaPGM probably doesn't work with Photoshop prior to version 4.

Authors

CartaPGM is based on Pascal Lamboley's pbm plug-in (pascal.lamboley@meteo.fr). He generously shared essential code for this project. You can download his plug-in here. It runs only in classic mode - but unlike CartaPGM, it can write files in the following formats: PPM (24-bit RGB), PBM (1-bit black and white), and PGM 8 bit binary. Cartagena was developed by Bernhard Jenny (jenny@karto.baug.ethz.ch).

Copyright

CartaPGM is copyrighted by Pascal Lamboley and Bernhard Jenny. CartaPGM may be freely distributed, as long as no party makes profit from its distribution. But we hope you can make a profit on it's use.

If you cannot live without it, send a postcard or some CDs with classical music to:

Pascal Lamboley
102 chemin de la Peyrette
31170 Tournefeuille
FRANCE