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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: QwtRasterData Class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li id="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>QwtRasterData Class Reference</h1><!-- doxytag: class="QwtRasterData" -->Inheritance diagram for QwtRasterData:<p><center><img src="class_qwt_raster_data__inherit__graph.png" border="0" usemap="#_qwt_raster_data__inherit__map" alt="Inheritance graph"></center><center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_raster_data-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2><a class="el" href="class_qwt_raster_data.html">QwtRasterData</a> defines an interface to any type of raster data. <p><p>Definition at line <a class="el" href="qwt__raster__data_8h-source.html#l00053">53</a> of file <a class="el" href="qwt__raster__data_8h-source.html">qwt_raster_data.h</a>.<table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Public Types</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dc6679160a229992f0870a2b784985f3"></a><!-- doxytag: member="QwtRasterData::ContourLines" ref="dc6679160a229992f0870a2b784985f3" args="" -->typedef QMap< double, QPolygonF > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#dc6679160a229992f0870a2b784985f3">ContourLines</a></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#8be376c4015dcb4adc207316bccf1140">ConrecAttribute</a> { <br> <b>IgnoreAllVerticesOnLevel</b> = 1, <br> <b>IgnoreOutOfRange</b> = 2<br> }</td></tr><tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0fc20e05a794c0dc85f6ae5719566588"></a><!-- doxytag: member="QwtRasterData::QwtRasterData" ref="0fc20e05a794c0dc85f6ae5719566588" args="()" --> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#0fc20e05a794c0dc85f6ae5719566588">QwtRasterData</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6bc4af46167b65d2b6eb69d03b87715a"></a><!-- doxytag: member="QwtRasterData::QwtRasterData" ref="6bc4af46167b65d2b6eb69d03b87715a" args="(const QwtDoubleRect &)" --> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#6bc4af46167b65d2b6eb69d03b87715a">QwtRasterData</a> (const QwtDoubleRect &)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="95b24c7cad42c5f7947e64e990def3e8"></a><!-- doxytag: member="QwtRasterData::~QwtRasterData" ref="95b24c7cad42c5f7947e64e990def3e8" args="()" -->virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#95b24c7cad42c5f7947e64e990def3e8">~QwtRasterData</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="class_qwt_raster_data.html">QwtRasterData</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#6abfdbd4707ca4095ed6b51584a5c504">copy</a> () const =0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="88ec1da25b0beaa9530dd039791399fb"></a><!-- doxytag: member="QwtRasterData::setBoundingRect" ref="88ec1da25b0beaa9530dd039791399fb" args="(const QwtDoubleRect &)" -->virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#88ec1da25b0beaa9530dd039791399fb">setBoundingRect</a> (const QwtDoubleRect &)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2e730c7b31507bb66379f64af3468a25"></a><!-- doxytag: member="QwtRasterData::boundingRect" ref="2e730c7b31507bb66379f64af3468a25" args="() const " -->QwtDoubleRect </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#2e730c7b31507bb66379f64af3468a25">boundingRect</a> () const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual QSize </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#81e17cbcf24c941526088e6458ba347f">rasterHint</a> (const QwtDoubleRect &) const </td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#8405182366702abc965a2f938ccf1f14">initRaster</a> (const QwtDoubleRect &, const QSize &raster)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#369a5f525814bf569e01f88fbd8ddb5b">discardRaster</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#6396fc013fcec893b1e8cea4cf03691e">value</a> (double x, double y) const =0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="class_qwt_double_interval.html">QwtDoubleInterval</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#6c282a2457d2307d26afe9b84cc0b775">range</a> () const =0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="class_qwt_raster_data.html#dc6679160a229992f0870a2b784985f3">ContourLines</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_raster_data.html#5e62b72075c01a6be21a7d93b8c934d6">contourLines</a> (const QwtDoubleRect &rect, const QSize &raster, const QList< double > &levels, int flags) const </td></tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="5e62b72075c01a6be21a7d93b8c934d6"></a><!-- doxytag: member="QwtRasterData::contourLines" ref="5e62b72075c01a6be21a7d93b8c934d6" args="(const QwtDoubleRect &rect, const QSize &raster, const QList< double > &levels, int flags) const " --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"><a class="el" href="class_qwt_raster_data.html#dc6679160a229992f0870a2b784985f3">QwtRasterData::ContourLines</a> QwtRasterData::contourLines </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">const QwtDoubleRect & </td> <td class="mdname" nowrap> <em>rect</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>const QSize & </td> <td class="mdname" nowrap> <em>raster</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>const QList< double > & </td> <td class="mdname" nowrap> <em>levels</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>int </td> <td class="mdname" nowrap> <em>flags</em></td> </tr> <tr> <td class="md"></td> <td class="md">) </td> <td class="md" colspan="2"> const<code> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Calculate contour lines<p>An adaption of CONREC, a simple contouring algorithm. <a href="http://astronomy.swin.edu.au/~pbourke/projection/conrec">http://astronomy.swin.edu.au/~pbourke/projection/conrec</a> <p>Definition at line <a class="el" href="qwt__raster__data_8cpp-source.html#l00270">270</a> of file <a class="el" href="qwt__raster__data_8cpp-source.html">qwt_raster_data.cpp</a>.<p>References <a class="el" href="qwt__double__interval_8h-source.html#l00200">QwtDoubleInterval::isValid()</a>. </td> </tr></table><a class="anchor" name="6abfdbd4707ca4095ed6b51584a5c504"></a><!-- doxytag: member="QwtRasterData::copy" ref="6abfdbd4707ca4095ed6b51584a5c504" args="() const =0" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">virtual <a class="el" href="class_qwt_raster_data.html">QwtRasterData</a>* QwtRasterData::copy </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap> const<code> [pure virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Clone the data. <p><p>Referenced by <a class="el" href="qwt__plot__spectrogram_8cpp-source.html#l00342">QwtPlotSpectrogram::setData()</a>. </td> </tr></table><a class="anchor" name="369a5f525814bf569e01f88fbd8ddb5b"></a><!-- doxytag: member="QwtRasterData::discardRaster" ref="369a5f525814bf569e01f88fbd8ddb5b" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">void QwtRasterData::discardRaster </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> ⌨️ 快捷键说明
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