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305 lines
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<div class="title">QwtCurveFitter Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Abstract base class for a curve fitter.
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<a href="class_qwt_curve_fitter.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="qwt__curve__fitter_8h_source.html">qwt_curve_fitter.h</a>></code></p>
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Inheritance diagram for QwtCurveFitter:</div>
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</div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
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Public Types</h2></td></tr>
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<tr class="memitem:a4a9b88b0ab2842395a7662735c833301"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">Mode</a> { <a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301a87fb6ae7b505e76e42456c6caacdc3af">Polygon</a>
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, <a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301a86090d569665ef9f1d47f61ada986996">Path</a>
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}</td></tr>
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<tr class="memdesc:a4a9b88b0ab2842395a7662735c833301"><td class="mdescLeft"> </td><td class="mdescRight">Preferred mode of the fitting algorithm. <a href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">More...</a><br /></td></tr>
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<tr class="separator:a4a9b88b0ab2842395a7662735c833301"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a62919f309f0441d94adea94573d0f778"><td class="memItemLeft" align="right" valign="top"><a id="a62919f309f0441d94adea94573d0f778"></a>
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virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#a62919f309f0441d94adea94573d0f778">~QwtCurveFitter</a> ()</td></tr>
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<tr class="memdesc:a62919f309f0441d94adea94573d0f778"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br /></td></tr>
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<tr class="separator:a62919f309f0441d94adea94573d0f778"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8b0619d37b34e28d3881c2eb48cb50db"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">Mode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#a8b0619d37b34e28d3881c2eb48cb50db">mode</a> () const</td></tr>
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<tr class="separator:a8b0619d37b34e28d3881c2eb48cb50db"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afa9bf5b328aa553229e204533a60fec0"><td class="memItemLeft" align="right" valign="top">virtual QPolygonF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#afa9bf5b328aa553229e204533a60fec0">fitCurve</a> (const QPolygonF &polygon) const =0</td></tr>
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<tr class="separator:afa9bf5b328aa553229e204533a60fec0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a49b54c6e81081e9c8a583d8b5ccbab9c"><td class="memItemLeft" align="right" valign="top">virtual QPainterPath </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#a49b54c6e81081e9c8a583d8b5ccbab9c">fitCurvePath</a> (const QPolygonF &polygon) const =0</td></tr>
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<tr class="separator:a49b54c6e81081e9c8a583d8b5ccbab9c"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
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Protected Member Functions</h2></td></tr>
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<tr class="memitem:acd45c40e13a1c43a959daeb595f144e1"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#acd45c40e13a1c43a959daeb595f144e1">QwtCurveFitter</a> (<a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">Mode</a> <a class="el" href="class_qwt_curve_fitter.html#a8b0619d37b34e28d3881c2eb48cb50db">mode</a>)</td></tr>
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<tr class="separator:acd45c40e13a1c43a959daeb595f144e1"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Abstract base class for a curve fitter. </p>
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<p class="definition">Definition at line <a class="el" href="qwt__curve__fitter_8h_source.html#l00021">21</a> of file <a class="el" href="qwt__curve__fitter_8h_source.html">qwt_curve_fitter.h</a>.</p>
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</div><h2 class="groupheader">Member Enumeration Documentation</h2>
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<a id="a4a9b88b0ab2842395a7662735c833301"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a4a9b88b0ab2842395a7662735c833301">◆ </a></span>Mode</h2>
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<td class="memname">enum <a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">QwtCurveFitter::Mode</a></td>
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</tr>
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<p>Preferred mode of the fitting algorithm. </p>
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<p>Even if a QPainterPath can always be created from a QPolygonF the overhead of the conversion can be avoided by indicating the preference of the implementation to the application code. </p>
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<table class="fieldtable">
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="a4a9b88b0ab2842395a7662735c833301a87fb6ae7b505e76e42456c6caacdc3af"></a>Polygon </td><td class="fielddoc"><p>The fitting algorithm creates a polygon - the implementation of <a class="el" href="class_qwt_curve_fitter.html#a49b54c6e81081e9c8a583d8b5ccbab9c">fitCurvePath()</a> simply wraps the polygon into a path.</p>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_weeding_curve_fitter.html" title="A curve fitter implementing Douglas and Peucker algorithm.">QwtWeedingCurveFitter</a> </dd></dl>
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</td></tr>
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<tr><td class="fieldname"><a id="a4a9b88b0ab2842395a7662735c833301a86090d569665ef9f1d47f61ada986996"></a>Path </td><td class="fielddoc"><p>The fitting algorithm creates a painter path - the implementation of <a class="el" href="class_qwt_curve_fitter.html#afa9bf5b328aa553229e204533a60fec0">fitCurve()</a> extracts a polygon from the path.</p>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html" title="A curve fitter using a spline interpolation.">QwtSplineCurveFitter</a> </dd></dl>
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</td></tr>
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</table>
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<p class="definition">Definition at line <a class="el" href="qwt__curve__fitter_8h_source.html#l00032">32</a> of file <a class="el" href="qwt__curve__fitter_8h_source.html">qwt_curve_fitter.h</a>.</p>
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a id="acd45c40e13a1c43a959daeb595f144e1"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#acd45c40e13a1c43a959daeb595f144e1">◆ </a></span>QwtCurveFitter()</h2>
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<td class="memname">QwtCurveFitter::QwtCurveFitter </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">Mode</a> </td>
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<td class="paramname"><em>mode</em></td><td>)</td>
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<td></td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">explicit</span><span class="mlabel">protected</span></span> </td>
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<p>Constructor </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">mode</td><td>Preferred fitting mode </td></tr>
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</table>
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</dd>
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<p class="definition">Definition at line <a class="el" href="qwt__curve__fitter_8cpp_source.html#l00016">16</a> of file <a class="el" href="qwt__curve__fitter_8cpp_source.html">qwt_curve_fitter.cpp</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a id="afa9bf5b328aa553229e204533a60fec0"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#afa9bf5b328aa553229e204533a60fec0">◆ </a></span>fitCurve()</h2>
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<td class="memname">virtual QPolygonF QwtCurveFitter::fitCurve </td>
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<td>(</td>
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<td class="paramtype">const QPolygonF & </td>
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<td class="paramname"><em>polygon</em></td><td>)</td>
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<td> const</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Find a curve which has the best fit to a series of data points</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">polygon</td><td>Series of data points </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Curve points</dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_curve_fitter.html#a49b54c6e81081e9c8a583d8b5ccbab9c">fitCurvePath()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_weeding_curve_fitter.html#a374b476ce3ea491760ff7d0ccda0fedf">QwtWeedingCurveFitter</a>, <a class="el" href="class_qwt_spline_curve_fitter.html#acec7ca66398cd0e6b6e24159e9f00d3b">QwtSplineCurveFitter</a>, and <a class="el" href="class_qwt_polar_fitter.html#a99fda3a39854c5d9f2f77b66a05ef295">QwtPolarFitter</a>.</p>
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<a id="a49b54c6e81081e9c8a583d8b5ccbab9c"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a49b54c6e81081e9c8a583d8b5ccbab9c">◆ </a></span>fitCurvePath()</h2>
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<td class="memname">virtual QPainterPath QwtCurveFitter::fitCurvePath </td>
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<td>(</td>
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<td class="paramtype">const QPolygonF & </td>
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<td class="paramname"><em>polygon</em></td><td>)</td>
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<td> const</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Find a curve path which has the best fit to a series of data points</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">polygon</td><td>Series of data points </td></tr>
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</dd>
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<dl class="section return"><dt>Returns</dt><dd>Curve path</dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_curve_fitter.html#afa9bf5b328aa553229e204533a60fec0">fitCurve()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_weeding_curve_fitter.html#ad5c04dcd161b8e238c53a753716eff5c">QwtWeedingCurveFitter</a>, <a class="el" href="class_qwt_spline_curve_fitter.html#a6d537e6d3aebdba0589eb2d1aa9c9154">QwtSplineCurveFitter</a>, and <a class="el" href="class_qwt_polar_fitter.html#a851d043e4787663297a489593d33841f">QwtPolarFitter</a>.</p>
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<a id="a8b0619d37b34e28d3881c2eb48cb50db"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a8b0619d37b34e28d3881c2eb48cb50db">◆ </a></span>mode()</h2>
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<td class="memname"><a class="el" href="class_qwt_curve_fitter.html#a4a9b88b0ab2842395a7662735c833301">QwtCurveFitter::Mode</a> QwtCurveFitter::mode </td>
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<td>(</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Preferred fitting mode </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__curve__fitter_8cpp_source.html#l00027">27</a> of file <a class="el" href="qwt__curve__fitter_8cpp_source.html">qwt_curve_fitter.cpp</a>.</p>
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