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<html>
<head>
<title>
PGMB_IO - Read and Write binary Portable Gray Map (PGM) Files
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
PGMB_IO <br> binary Portable Gray Map (PGM) Files <br>
Read and Write Utilities
</h1>
<hr>
<p>
<b>PGMB_IO</b>
is a C++ library which
reads and writes files in the
binary Portable Gray Map (PGM)
format for 2D grayscale graphics information.
</p>
<p>
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.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>PGMB_IO</b> is available in
<a href = "../../c_src/pgmb_io/pgmb_io.html">a C version</a> and
<a href = "../../cpp_src/pgmb_io/pgmb_io.html">a C++ version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../cpp_src/pbmb_io/pbmb_io.html">
PBMB_IO<a>,
a C++ library which
handles the Portable Bit Map (PBM) format.
</p>
<p>
<a href = "../../data/pgmb/pgmb.html">
PGMB</a>,
a data directory which
contains examples of binary Portable Gray Map (PGM) files.
</p>
<p>
<a href = "../../cpp_src/pgma_io/pgma_io.html">
PGMA_IO<a>,
a C++ library which
handles the ASCII Portable Gray Map (PGM) format.
</p>
<p>
<a href = "../../cpp_src/pgma_to_pgmb/pgma_to_pgmb.html">
PGMA_TO_PGMB<a>,
a C++ program which
converts an ASCII Portable Gray Map (PGM) file
to a binary PGM file.
</p>
<p>
<a href = "../../cpp_src/ppmb_io/ppmb_io.html">
PPMB_IO<a>,
a C++ library which
handles the binary Portable Pixel Map (PPM) format.
</p>
<p>
<a href = "../../cpp_src/pgmb_to_pgma/pgmb_to_pgma.html">
PGMB_TO_PGMA<a>,
a C++ program which
converts a binary Portable Gray Map (PGM) file to an ASCII PGM file.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
<a href = "http://netpbm.sourceforge.net/">the NETPBM homepage</a>.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "pgmb_io.cpp">pgmb_io.cpp</a>, the source code;
</li>
<li>
<a href = "pgmb_io.hpp">pgmb_io.hpp</a>,
the include file for PGMB_IO;
</li>
<li>
<a href = "pgmb_io.sh">pgmb_io.sh</a>,
commands to compile the source code;
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "pgmb_io_prb.cpp">pgmb_io_prb.cpp</a>,
the sample calling program.
</li>
<li>
<a href = "pgmb_io_prb.sh">pgmb_io_prb.sh</a>,
commands to compile, link and run the sample calling program.
</li>
<li>
<a href = "pgmb_io_prb_output.txt">pgmb_io_prb_output.txt</a>,
the sample output file.
</li>
<li>
<a href = "pgmb_io_prb_01.pgm">pgmb_io_prb_01.pgm</a>,
a binary PGM file created by the program.
</li>
<li>
<a href = "pgmb_io_prb_02.pgm">pgmb_io_prb_02.pgm</a>,
a binary PGM file created by the program.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>CH_CAP</b> capitalizes a single character.
</li>
<li>
<b>PGMB_CHECK_DATA</b> checks the data for a binary portable gray map file.
</li>
<li>
<b>PGMB_EXAMPLE</b> sets up some data for a binary portable gray map file.
</li>
<li>
<b>PGMB_READ</b> reads the header and data from a binary portable gray map file.
</li>
<li>
<b>PGMB_READ_DATA</b> reads the data in a binary portable gray map file.
</li>
<li>
<b>PGMB_READ_HEADER</b> reads the header of a binary portable gray map file.
</li>
<li>
<b>PGMB_READ_TEST</b> tests the binary portable gray map read routines.
</li>
<li>
<b>PGMB_WRITE</b> writes the header and data for a binary portable gray map file.
</li>
<li>
<b>PGMB_WRITE_DATA</b> writes the data for a binary portable gray map file.
</li>
<li>
<b>PGMB_WRITE_HEADER</b> writes the header of a binary portable gray map file.
</li>
<li>
<b>PGMB_WRITE_TEST</b> tests the binary portable gray map write routines.
</li>
<li>
<b>S_EQI</b> reports whether two strings are equal, ignoring case.
</li>
<li>
<b>S_LEN_TRIM</b> returns the length of a string to the last nonblank.
</li>
<li>
<b>S_WORD_EXTRACT_FIRST</b> extracts the first word from a string.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../cpp_src.html">
the C++ source codes</a>.
</p>
<hr>
<i>
Last revised on 16 June 2012.
</i>
<!-- John Burkardt -->
</body>
</html>