PGMA_IO
ASCII Portable Gray Map (PGM) Files
Read and Write Utilities

PGMA_IO is a Python library which reads and writes files in the ASCII Portable Gray Map (PGM) format for 2D grayscale graphics information.

There are many graphics programs, such as XV and GIMP, that can display images in this format, or translate them to other formats such as BMP, GIF, JPEG, MacPaint, X Window, and so on.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

PGMA_IO is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

PGMA, a data directory which contains examples of ASCII Portable Gray Map (PGM) files.

PPMA_IO, a Python library which can read or write ASCII Portable Pixel Map (PPM) graphics files.

1. the NETPBM homepage.

Source Code:

• pgma_io.py, the source code;
• pgma_io_test.sh, a script which runs the sample problem.
• pgma_io_test.txt, the output file.
• pgma_io_test.pgm, an ASCII PGM file created by the test.

You can go up one level to the Python source codes.