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<span class="path"><a href="index.html">FOSSEE Signal Processing Toolbox</a> >> <a href="section_cc2bc01c47967d47fcf3507a91d572ba.html">FOSSEE Signal Processing Toolbox</a> > detrend1</span>
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<div class="refnamediv"><h1 class="refname">detrend1</h1>
<p class="refpurpose">This function removes the best fit of a polynomial of order P from the data X</p></div>
<div class="refsynopsisdiv"><h3 class="title">Calling Sequence</h3>
<div class="synopsis"><pre><span class="functionid">detrend1</span><span class="default">(</span><span class="default">X</span><span class="default">,</span><span class="default">P</span><span class="default">)</span></pre></div></div>
<div class="refsection"><h3 class="title">Parameters</h3>
<dl><dt><span class="term">X:</span>
<dd><p class="para">Input vecor or matrix.</p></dd></dt>
<dt><span class="term">P:</span>
<dd><p class="para">The order of polnomial</p></dd></dt></dl></div>
<div class="refsection"><h3 class="title">Description</h3>
<p class="para">If X is a vector, 'detrend1(X, P)' removes the best fit of apolynomial of order P from the data X.If X is a matrix, 'detrend1(X, P)' does the same for each column in X.</p>
<p class="para">The second argument P is optional. If it is not specified, a value of 1 is assumed. This corresponds to removing a linear trend.
The order of the polynomial can also be given as a string, in which case P must be either "constant" (corresponds to 'P=0') or "linear"(corresponds to 'P=1')</p></div>
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