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<html>
<head>
<title>
ST_IO - Read and Write Sparse Triplet (ST) Matrix Files.
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
ST_IO <br> Read and Write Sparse Triplet (ST) Matrix Files.
</h1>
<hr>
<p>
<b>ST_IO</b>
is a MATLAB program which
reads and writes files in the Sparse Triplet (ST) sparse matrix format.
</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>ST_IO</b> is available in
<a href = "../../c_src/st_io/st_io.html">a C version</a> and
<a href = "../../cpp_src/st_io/st_io.html">a C++ version</a> and
<a href = "../../f_src/st_io/st_io.html">a FORTRAN90 version</a> and
<a href = "../../f77_src/st_io/st_io.html">a FORTRAN77 version</a> and
<a href = "../../m_src/st_io/st_io.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../m_src/cc_io/cc_io.html">
CC_IO</a>,
a MATLAB library which
reads and writes sparse linear systems
stored in the Compressed Column (CC) format.
</p>
<p>
<a href = "../../m_src/cc_to_st/cc_to_st.html">
CC_TO_ST</a>,
a MATLAB library which
converts a sparse matrix from compressed column (CC)
to sparse triple (ST) format.
</p>
<p>
<a href = "../../m_src/hb_to_st/hb_to_st.html">
HB_TO_ST</a>,
a MATLAB program which
converts a sparse matrix from Harwell-Boeing to sparse triplet format.
</p>
<p>
<a href = "../../m_src/mm_to_st/mm_to_st.html">
MM_TO_ST</a>,
a MATLAB program which
reads the sparse matrix information from an MM Matrix Market file
and writes a corresponding ST Sparse Triplet file.
</p>
<p>
<a href = "../../m_src/msm_to_st/msm_to_st.html">
MSM_TO_ST</a>,
a MATLAB program which
writes a MATLAB sparse matrix to a Sparse Triplet (ST) file;
</p>
<p>
<a href = "../../data/st/st.html">
ST</a>,
the format which
is used for the input to this program.
</p>
<p>
<a href = "../../m_src/st_to_cc/st_to_cc.html">
ST_TO_CC</a>,
a MATLAB library which
converts sparse matrix data from Sparse Triplet (ST) format
to Compressed Column (CC) format.
</p>
<p>
<a href = "../../m_src/st_to_hb/st_to_hb.html">
ST_TO_HB</a>,
a MATLAB program which
converts a sparse matrix file from ST format to
HB format (Harwell Boeing format);
</p>
<p>
<a href = "../../m_src/st_to_mm/st_to_mm.html">
ST_TO_MM</a>,
a MATLAB program which
converts a sparse matrix file from ST format to
MM format (Matrix Market format);
</p>
<p>
<a href = "../../m_src/st_to_msm/st_to_msm.html">
ST_TO_MSM</a>,
a MATLAB program which
reads an ST sparse triplet file
and creates a corresponding MATLAB Sparse Matrix.
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "i4vec_dec.m">i4vec_dec.m</a>,
decrements an I4VEC.
</li>
<li>
<a href = "i4vec_inc.m">i4vec_inc.m</a>,
increments an I4VEC.
</li>
<li>
<a href = "sort_heap_external.m">sort_heap_external.m</a>,
externally sorts a list of items into ascending order.
</li>
<li>
<a href = "st_data_read.m">st_data_read.m</a>,
reads the data of an ST file.
</li>
<li>
<a href = "st_header_print.m">st_header_print.m</a>,
prints the header of an ST file.
</li>
<li>
<a href = "st_header_read.m">st_header_read.m</a>,
reads the header of an ST file.
</li>
<li>
<a href = "st_print.m">st_print.m</a>,
prints an ST file.
</li>
<li>
<a href = "st_print_some.m">st_print_some.m</a>,
prints some of an ST file.
</li>
<li>
<a href = "st_sort_a.m">st_sort_a.m</a>,
sorts the entries of an ST matrix by column.
</li>
<li>
<a href = "st_transpose.m">st_transpose.m</a>,
transposes an ST matrix.
</li>
<li>
<a href = "st_write.m">st_write.m</a>,
writes an ST file.
</li>
<li>
<a href = "timestamp.m">timestamp.m</a>,
prints the current YMDHMS date as a time stamp.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "st_io_test.m">st_io_test.m</a>,
calls all the tests.
</li>
<li>
<a href = "st_io_test01.m">st_io_test01.m</a>,
tests ST_WRITE.
</li>
<li>
<a href = "st_io_test02.m">st_io_test02.m</a>,
tests ST_HEADER_READ, ST_DATA_READ.
</li>
<li>
<a href = "st_io_test03.m">st_io_test03.m</a>,
tests ST_SORT_A.
</li>
<li>
<a href = "st_io_test_output.txt">st_io_test_output.txt</a>,
the output file.
</li>
<li>
<a href = "a5by5.st">a5by5.st</a>,
an ST file storing a 5 by 5 matrix.
</li>
<li>
<a href = "kershaw.st">kershaw.st</a>,
an ST file storing a 4 by 4 matrix.
</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 21 July 2014.
</i>
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