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<div class="title">SPONES Sparse Ones Function </div> </div>
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<div class="textblock"><p>Section: <a class="el" href="sec_sparse.html">Sparse Matrix Support</a> </p>
<h1><a class="anchor" id="Usage"></a>
Usage</h1>
<p>Returns a sparse <code>float</code> matrix with ones where the argument matrix has nonzero values. The general syntax for it is </p>
<pre class="fragment"> y = spones(x)
</pre><p> where <code>x</code> is a matrix (it may be full or sparse). The output matrix <code>y</code> is the same size as <code>x</code>, has type <code>float</code>, and contains ones in the nonzero positions of <code>x</code>. </p>
<h1><a class="anchor" id="Examples"></a>
Examples</h1>
<p>Here are some examples of the <code>spones</code> function</p>
<pre class="fragment">--> a = [1,0,3,0,5;0,0,2,3,0;1,0,0,0,1]
a =
1 0 3 0 5
0 0 2 3 0
1 0 0 0 1
--> b = spones(a)
b =
1 1 1
1 2 1
1 3 1
1 4 1
1 5 1
--> full(b)
ans =
1 1 1 1 1
0 0 0 0 0
0 0 0 0 0
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