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<div class="subTitle">org.apache.commons.math3.optimization.fitting</div>
<h2 title="Class CurveFitter" class="title">Class CurveFitter&lt;T extends <a href="../../../../../../org/apache/commons/math3/analysis/ParametricUnivariateFunction.html" title="interface in org.apache.commons.math3.analysis">ParametricUnivariateFunction</a>&gt;</h2>
</div>
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<ul class="inheritance">
<li>org.apache.commons.math3.optimization.fitting.CurveFitter&lt;T&gt;</li>
</ul>
</li>
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<div class="description">
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<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>T</code> - Function to use for the fit.</dd></dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/optimization/fitting/GaussianFitter.html" title="class in org.apache.commons.math3.optimization.fitting">GaussianFitter</a>, <a href="../../../../../../org/apache/commons/math3/optimization/fitting/HarmonicFitter.html" title="class in org.apache.commons.math3.optimization.fitting">HarmonicFitter</a>, <a href="../../../../../../org/apache/commons/math3/optimization/fitting/PolynomialFitter.html" title="class in org.apache.commons.math3.optimization.fitting">PolynomialFitter</a></dd>
</dl>
<hr>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>As of 3.1 (to be removed in 4.0).</i></div>
</div>
<br>
<pre><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public class <span class="strong">CurveFitter&lt;T extends <a href="../../../../../../org/apache/commons/math3/analysis/ParametricUnivariateFunction.html" title="interface in org.apache.commons.math3.analysis">ParametricUnivariateFunction</a>&gt;</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Fitter for parametric univariate real functions y = f(x).
<br/>
When a univariate real function y = f(x) does depend on some
unknown parameters p<sub>0</sub>, p<sub>1</sub> ... p<sub>n-1</sub>,
this class can be used to find these parameters. It does this
by <em>fitting</em> the curve so it remains very close to a set of
observed points (x<sub>0</sub>, y<sub>0</sub>), (x<sub>1</sub>,
y<sub>1</sub>) ... (x<sub>k-1</sub>, y<sub>k-1</sub>). This fitting
is done by finding the parameters values that minimizes the objective
function &sum;(y<sub>i</sub>-f(x<sub>i</sub>))<sup>2</sup>. This is
really a least squares problem.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd>
<dt><span class="strong">Version:</span></dt>
<dd>$Id: CurveFitter.java 1591835 2014-05-02 09:04:01Z tn $</dd></dl>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#CurveFitter(org.apache.commons.math3.optimization.DifferentiableMultivariateVectorOptimizer)">CurveFitter</a></strong>(<a href="../../../../../../org/apache/commons/math3/optimization/DifferentiableMultivariateVectorOptimizer.html" title="interface in org.apache.commons.math3.optimization">DifferentiableMultivariateVectorOptimizer</a>&nbsp;optimizer)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>as of 3.1 replaced by <a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#CurveFitter(org.apache.commons.math3.optimization.MultivariateDifferentiableVectorOptimizer)"><code>CurveFitter(MultivariateDifferentiableVectorOptimizer)</code></a></i></div>
</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#CurveFitter(org.apache.commons.math3.optimization.MultivariateDifferentiableVectorOptimizer)">CurveFitter</a></strong>(<a href="../../../../../../org/apache/commons/math3/optimization/MultivariateDifferentiableVectorOptimizer.html" title="interface in org.apache.commons.math3.optimization">MultivariateDifferentiableVectorOptimizer</a>&nbsp;optimizer)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Simple constructor.</div>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double)">addObservedPoint</a></strong>(double&nbsp;x,
double&nbsp;y)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Add an observed (x,y) point to the sample with unit weight.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double, double)">addObservedPoint</a></strong>(double&nbsp;weight,
double&nbsp;x,
double&nbsp;y)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Add an observed weighted (x,y) point to the sample.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(org.apache.commons.math3.optimization.fitting.WeightedObservedPoint)">addObservedPoint</a></strong>(<a href="../../../../../../org/apache/commons/math3/optimization/fitting/WeightedObservedPoint.html" title="class in org.apache.commons.math3.optimization.fitting">WeightedObservedPoint</a>&nbsp;observed)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Add an observed weighted (x,y) point to the sample.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#clearObservations()">clearObservations</a></strong>()</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Remove all observations.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#fit(int, T, double[])">fit</a></strong>(int&nbsp;maxEval,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html" title="type parameter in CurveFitter">T</a>&nbsp;f,
double[]&nbsp;initialGuess)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Fit a curve.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#fit(T, double[])">fit</a></strong>(<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html" title="type parameter in CurveFitter">T</a>&nbsp;f,
double[]&nbsp;initialGuess)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Fit a curve.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/commons/math3/optimization/fitting/WeightedObservedPoint.html" title="class in org.apache.commons.math3.optimization.fitting">WeightedObservedPoint</a>[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#getObservations()">getObservations</a></strong>()</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;</div>
<div class="block">Get the observed points.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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<h3>Constructor Detail</h3>
<a name="CurveFitter(org.apache.commons.math3.optimization.DifferentiableMultivariateVectorOptimizer)">
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<h4>CurveFitter</h4>
<pre><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;CurveFitter(<a href="../../../../../../org/apache/commons/math3/optimization/DifferentiableMultivariateVectorOptimizer.html" title="interface in org.apache.commons.math3.optimization">DifferentiableMultivariateVectorOptimizer</a>&nbsp;optimizer)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>as of 3.1 replaced by <a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#CurveFitter(org.apache.commons.math3.optimization.MultivariateDifferentiableVectorOptimizer)"><code>CurveFitter(MultivariateDifferentiableVectorOptimizer)</code></a></i></div>
<div class="block">Simple constructor.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>optimizer</code> - optimizer to use for the fitting</dd></dl>
</li>
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<a name="CurveFitter(org.apache.commons.math3.optimization.MultivariateDifferentiableVectorOptimizer)">
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<h4>CurveFitter</h4>
<pre>public&nbsp;CurveFitter(<a href="../../../../../../org/apache/commons/math3/optimization/MultivariateDifferentiableVectorOptimizer.html" title="interface in org.apache.commons.math3.optimization">MultivariateDifferentiableVectorOptimizer</a>&nbsp;optimizer)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Simple constructor.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>optimizer</code> - optimizer to use for the fitting</dd><dt><span class="strong">Since:</span></dt>
<dd>3.1</dd></dl>
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<h3>Method Detail</h3>
<a name="addObservedPoint(double, double)">
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<h4>addObservedPoint</h4>
<pre>public&nbsp;void&nbsp;addObservedPoint(double&nbsp;x,
double&nbsp;y)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Add an observed (x,y) point to the sample with unit weight.
<p>Calling this method is equivalent to call
<code>addObservedPoint(1.0, x, y)</code>.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - abscissa of the point</dd><dd><code>y</code> - observed value of the point at x, after fitting we should
have f(x) as close as possible to this value</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double, double)"><code>addObservedPoint(double, double, double)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(org.apache.commons.math3.optimization.fitting.WeightedObservedPoint)"><code>addObservedPoint(WeightedObservedPoint)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#getObservations()"><code>getObservations()</code></a></dd></dl>
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<h4>addObservedPoint</h4>
<pre>public&nbsp;void&nbsp;addObservedPoint(double&nbsp;weight,
double&nbsp;x,
double&nbsp;y)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Add an observed weighted (x,y) point to the sample.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>weight</code> - weight of the observed point in the fit</dd><dd><code>x</code> - abscissa of the point</dd><dd><code>y</code> - observed value of the point at x, after fitting we should
have f(x) as close as possible to this value</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double)"><code>addObservedPoint(double, double)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(org.apache.commons.math3.optimization.fitting.WeightedObservedPoint)"><code>addObservedPoint(WeightedObservedPoint)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#getObservations()"><code>getObservations()</code></a></dd></dl>
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<h4>addObservedPoint</h4>
<pre>public&nbsp;void&nbsp;addObservedPoint(<a href="../../../../../../org/apache/commons/math3/optimization/fitting/WeightedObservedPoint.html" title="class in org.apache.commons.math3.optimization.fitting">WeightedObservedPoint</a>&nbsp;observed)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Add an observed weighted (x,y) point to the sample.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>observed</code> - observed point to add</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double)"><code>addObservedPoint(double, double)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double, double)"><code>addObservedPoint(double, double, double)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#getObservations()"><code>getObservations()</code></a></dd></dl>
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<a name="getObservations()">
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<h4>getObservations</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/commons/math3/optimization/fitting/WeightedObservedPoint.html" title="class in org.apache.commons.math3.optimization.fitting">WeightedObservedPoint</a>[]&nbsp;getObservations()</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Get the observed points.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>observed points</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double)"><code>addObservedPoint(double, double)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(double, double, double)"><code>addObservedPoint(double, double, double)</code></a>,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(org.apache.commons.math3.optimization.fitting.WeightedObservedPoint)"><code>addObservedPoint(WeightedObservedPoint)</code></a></dd></dl>
</li>
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<a name="clearObservations()">
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<h4>clearObservations</h4>
<pre>public&nbsp;void&nbsp;clearObservations()</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Remove all observations.</div>
</li>
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<a name="fit(org.apache.commons.math3.analysis.ParametricUnivariateFunction,double[])">
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<h4>fit</h4>
<pre>public&nbsp;double[]&nbsp;fit(<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html" title="type parameter in CurveFitter">T</a>&nbsp;f,
double[]&nbsp;initialGuess)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Fit a curve.
This method compute the coefficients of the curve that best
fit the sample of observed points previously given through calls
to the <a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(org.apache.commons.math3.optimization.fitting.WeightedObservedPoint)"><code>addObservedPoint</code></a> method.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>f</code> - parametric function to fit.</dd><dd><code>initialGuess</code> - first guess of the function parameters.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the fitted parameters.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html" title="class in org.apache.commons.math3.exception">DimensionMismatchException</a></code> - if the start point dimension is wrong.</dd></dl>
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<a name="fit(int,org.apache.commons.math3.analysis.ParametricUnivariateFunction,double[])">
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<h4>fit</h4>
<pre>public&nbsp;double[]&nbsp;fit(int&nbsp;maxEval,
<a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html" title="type parameter in CurveFitter">T</a>&nbsp;f,
double[]&nbsp;initialGuess)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;</div>
<div class="block">Fit a curve.
This method compute the coefficients of the curve that best
fit the sample of observed points previously given through calls
to the <a href="../../../../../../org/apache/commons/math3/optimization/fitting/CurveFitter.html#addObservedPoint(org.apache.commons.math3.optimization.fitting.WeightedObservedPoint)"><code>addObservedPoint</code></a> method.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>f</code> - parametric function to fit.</dd><dd><code>initialGuess</code> - first guess of the function parameters.</dd><dd><code>maxEval</code> - Maximum number of function evaluations.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the fitted parameters.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/TooManyEvaluationsException.html" title="class in org.apache.commons.math3.exception">TooManyEvaluationsException</a></code> - if the number of allowed evaluations is exceeded.</dd>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html" title="class in org.apache.commons.math3.exception">DimensionMismatchException</a></code> - if the start point dimension is wrong.</dd><dt><span class="strong">Since:</span></dt>
<dd>3.0</dd></dl>
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