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- <title>Description of lfsmooth</title>
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- <h1>lfsmooth
- </h1>
- <h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../../../up.png"></a></h2>
- <div class="box"><strong></strong></div>
- <h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../../../up.png"></a></h2>
- <div class="box"><strong>function yhat=lfsmooth(varargin) </strong></div>
- <h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../../up.png"></a></h2>
- <div class="fragment"><pre class="comment">
- a simple interface to locfit.
- output is a vector of smoothed values, at each data point.
- all locfit options, except evaluation structures, are valid.
- Example, to smooth a time series of observations,
- t = (1:100)';
- y = 2*sin(t/10) + normrnd(0,1,100,1);
- plot(t,y,'.');
- hold on;
- plot(t,lfsmooth(t,y,'nn',0.5));
- hold off;</pre></div>
- <!-- crossreference -->
- <h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../../../up.png"></a></h2>
- This function calls:
- <ul style="list-style-image:url(../../../matlabicon.gif)">
- <li><a href="locfit.html" class="code" title="function fit=locfit(varargin)">locfit</a> Smoothing noisy data using Local Regression and Likelihood.</li></ul>
- This function is called by:
- <ul style="list-style-image:url(../../../matlabicon.gif)">
- </ul>
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- <h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../../../up.png"></a></h2>
- <div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function yhat=lfsmooth(varargin)</a>
- 0002 <span class="comment">%</span>
- 0003 <span class="comment">% a simple interface to locfit.</span>
- 0004 <span class="comment">% output is a vector of smoothed values, at each data point.</span>
- 0005 <span class="comment">% all locfit options, except evaluation structures, are valid.</span>
- 0006 <span class="comment">%</span>
- 0007 <span class="comment">% Example, to smooth a time series of observations,</span>
- 0008 <span class="comment">%</span>
- 0009 <span class="comment">% t = (1:100)';</span>
- 0010 <span class="comment">% y = 2*sin(t/10) + normrnd(0,1,100,1);</span>
- 0011 <span class="comment">% plot(t,y,'.');</span>
- 0012 <span class="comment">% hold on;</span>
- 0013 <span class="comment">% plot(t,lfsmooth(t,y,'nn',0.5));</span>
- 0014 <span class="comment">% hold off;</span>
- 0015 <span class="comment">%</span>
- 0016
- 0017 <span class="comment">% Minimal input validation</span>
- 0018 <span class="keyword">if</span> nargin < 1
- 0019 error( <span class="string">'At least one input argument required'</span> );
- 0020 <span class="keyword">end</span>
- 0021
- 0022 fit = <a href="locfit.html" class="code" title="function fit=locfit(varargin)">locfit</a>(x,varargin{:},<span class="string">'module'</span>,<span class="string">'simple'</span>);
- 0023 yhat = fit.fit_points.fitted_values;
- 0024
- 0025 <span class="keyword">return</span>;</pre></div>
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