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<html>
<head>
<title>
PPMA_IO - Read or write an ASCII PPM file.
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
PPMA_IO <br> Read or write an ASCII PPM file.
</h1>
<hr>
<p>
<b>PPMA_IO</b>
is a MATLAB library which
can read or write an
ASCII PPM (Portable Pixel Map) file, involving 3 NROW by NCOL
integer arrays of RGB color information.
</p>
<p>
There are many graphics programs, such as XV and GIMP, that can
display images in this formats, 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>PPMA_IO</b> is available in
<a href = "../../c_src/ppma_io/ppma_io.html">a C version</a> and
<a href = "../../cpp_src/ppma_io/ppma_io.html">a C++ version</a> and
<a href = "../../f77_src/ppma_io/ppma_io.html">a FORTRAN77 version</a> and
<a href = "../../f_src/ppma_io/ppma_io.html">a FORTRAN90 version</a> and
<a href = "../../m_src/ppma_io/ppma_io.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../f_src/pbma_io/pbma_io.html">
PBMA_IO<a>,
a MATLAB library which
handles the Portable Bit Map format.
</p>
<p>
<a href = "../../f_src/pgma_io/pgma_io.html">
PGMA_IO<a>,
a MATLAB library which
handles the Portable Gray Map format.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
<a href = "../../data/ppma/ppma.html">the PPMA Data page</a>.
</li>
<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 = "ppma_example.m">ppma_example.m</a>, a function that creates
a set of RGB color data.
</li>
<li>
<a href = "ppma_read.m">ppma_read.m</a>, a function that reads
an ASCII PPM file.
</li>
<li>
<a href = "ppma_write.m">ppma_write.m</a>, a function that writes
an ASCII PPM file.
</li>
<li>
<a href = "ppma_write_test.m">ppma_write_test.m</a>,
sets up an example and writes it to a file.
</li>
<li>
<a href = "timestamp.m">timestamp.m</a>
prints the current YMDHMS date as a timestamp.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "ppma_io_test.m">ppma_io_test.m</a>
calls all the tests.
</li>
<li>
<a href = "ppma_io_test_output.txt">ppma_io_test_output.txt</a>
the output file.
</li>
<li>
<a href = "ppma_io_test01.m">ppma_io_test01.m</a>
tests PPMA_EXAMPLE and PPMA_WRITE.
</li>
<li>
<a href = "ppma_io_test02.m">ppma_io_test02.m</a>
tests PPMA_READ.
</li>
<li>
<a href = "test01.ascii.ppm">test01.ascii.ppm</a>,
the ASCII PPM file from test 1.
</li>
<li>
<a href = "test01.png">test01.png</a>,
a PNG version of the file.
</li>
<li>
<a href = "test02.ascii.ppm">test02.ascii.ppm</a>,
the ASCII PPM file from test 2.
</li>
<li>
<a href = "test02.png">test02.png</a>,
a PNG version of the file.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../m_src.html">
the MATLAB source codes</a>.
</p>
<hr>
<i>
Last revised on 01 September 2005.
</i>
<!-- John Burkardt -->
</body>
</html>