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Next: <a href="Sparse-Matrices-Conversion-Between-Sparse-and-Dense.html#Sparse-Matrices-Conversion-Between-Sparse-and-Dense" accesskey="n" rel="next">Sparse Matrices Conversion Between Sparse and Dense</a>, Previous: <a href="Sparse-Matrices-Finding-Maximum-and-Minimum-Elements.html#Sparse-Matrices-Finding-Maximum-and-Minimum-Elements" accesskey="p" rel="previous">Sparse Matrices Finding Maximum and Minimum Elements</a>, Up: <a href="Sparse-Matrices.html#Sparse-Matrices" accesskey="u" rel="up">Sparse Matrices</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Compressed-Format"></a>
<h3 class="section">41.11 Compressed Format</h3>
<a name="index-sparse-matrices_002c-compression"></a>

<p>GSL supports compressed column storage (CCS) and compressed row storage (CRS)
formats.
</p>
<dl>
<dt><a name="index-gsl_005fspmatrix_005fccs"></a>Function: <em>gsl_spmatrix *</em> <strong>gsl_spmatrix_ccs</strong> <em>(const gsl_spmatrix * <var>T</var>)</em></dt>
<dd><p>This function creates a sparse matrix in compressed column format
from the input sparse matrix <var>T</var> which must be in triplet format.
A pointer to a newly allocated matrix is returned. The calling function
should free the newly allocated matrix when it is no longer needed.
</p></dd></dl>

<dl>
<dt><a name="index-gsl_005fspmatrix_005fcrs"></a>Function: <em>gsl_spmatrix *</em> <strong>gsl_spmatrix_crs</strong> <em>(const gsl_spmatrix * <var>T</var>)</em></dt>
<dd><p>This function creates a sparse matrix in compressed row format
from the input sparse matrix <var>T</var> which must be in triplet format.
A pointer to a newly allocated matrix is returned. The calling function
should free the newly allocated matrix when it is no longer needed.
</p></dd></dl>




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