<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Qwt User's Guide: QwtSeriesData< T > Class Template Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.7.3 --> <div id="top"> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">Qwt User's Guide <span id="projectnumber">6.0.1</span></div> </td> </tr> </tbody> </table> </div> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li class="current"><a href="annotated.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul> </div> <div id="navrow2" class="tabs2"> <ul class="tablist"> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="classes.html"><span>Class Index</span></a></li> <li><a href="inherits.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul> </div> </div> <div class="header"> <div class="summary"> <a href="#pub-methods">Public Member Functions</a> | <a href="#pro-attribs">Protected Attributes</a> </div> <div class="headertitle"> <h1>QwtSeriesData< T > Class Template Reference</h1> </div> </div> <div class="contents"> <!-- doxytag: class="QwtSeriesData" --> <p>Abstract interface for iterating over samples. <a href="#_details">More...</a></p> <p><code>#include <<a class="el" href="qwt__series__data_8h_source.html">qwt_series_data.h</a>></code></p> <div class="dynheader"> Inheritance diagram for QwtSeriesData< T >:</div> <div class="dyncontent"> <div class="center"><img src="class_qwt_series_data__inherit__graph.png" border="0" usemap="#_qwt_series_data_3_01_t_01_4_inherit__map" alt="Inheritance graph"/></div> <map name="_qwt_series_data_3_01_t_01_4_inherit__map" id="_qwt_series_data_3_01_t_01_4_inherit__map"> <area shape="rect" id="node3" href="class_qwt_array_series_data.html" title="Template class for data, that is organized as QVector." alt="" coords="363,156,533,185"/><area shape="rect" id="node21" href="class_qwt_series_data.html" title="QwtSeriesData\< QwtIntervalSample \>" alt="" coords="328,73,568,103"/><area shape="rect" id="node24" href="class_qwt_series_data.html" title="QwtSeriesData\< QPointF \>" alt="" coords="357,323,539,352"/><area shape="rect" id="node33" href="class_qwt_series_data.html" title="QwtSeriesData\< QwtSetSample \>" alt="" coords="339,239,557,268"/><area shape="rect" id="node36" href="class_qwt_series_data.html" title="QwtSeriesData\< QwtPoint3D \>" alt="" coords="347,5,549,35"/><area shape="rect" id="node5" href="class_qwt_array_series_data.html" title="QwtArraySeriesData\< QwtIntervalSample \>" alt="" coords="751,113,1020,143"/><area shape="rect" id="node9" href="class_qwt_array_series_data.html" title="QwtArraySeriesData\< QPointF \>" alt="" coords="780,248,991,277"/><area shape="rect" id="node13" href="class_qwt_array_series_data.html" title="QwtArraySeriesData\< QwtPoint3D \>" alt="" coords="769,29,1001,59"/><area shape="rect" id="node17" href="class_qwt_array_series_data.html" title="QwtArraySeriesData\< QwtSetSample \>" alt="" coords="760,176,1011,205"/><area shape="rect" id="node7" href="class_qwt_interval_series_data.html" title="Interface for iterating over an array of intervals." alt="" coords="1075,113,1224,143"/><area shape="rect" id="node11" href="class_qwt_point_series_data.html" title="Interface for iterating over an array of points." alt="" coords="1080,248,1219,277"/><area shape="rect" id="node15" href="class_qwt_point3_d_series_data.html" title="Interface for iterating over an array of 3D points." alt="" coords="1072,29,1227,59"/><area shape="rect" id="node19" href="class_qwt_set_series_data.html" title="Interface for iterating over an array of samples." alt="" coords="1085,176,1213,205"/><area shape="rect" id="node27" href="class_qwt_c_pointer_data.html" title="Data class containing two pointers to memory blocks of doubles." alt="" coords="824,365,947,395"/><area shape="rect" id="node29" href="class_qwt_point_array_data.html" title="Interface for iterating over two QVector<double> objects." alt="" coords="819,419,952,448"/><area shape="rect" id="node31" href="class_qwt_synthetic_point_data.html" title="Synthetic point data." alt="" coords="807,312,964,341"/></map> <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div> <p><a href="class_qwt_series_data-members.html">List of all members.</a></p> <table class="memberdecls"> <tr><td colspan="2"><h2><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#aedb969ba51a27d88d26ad7f7cb1c2c7f">boundingRect</a> () const =0</td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a3f075340d18fb112a342d74716eb8d9c">QwtSeriesData</a> ()</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual T </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#ae8650d16c07c58f01897ab48658a3266">sample</a> (size_t i) const =0</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a81466c72589c03310543d17e1f1d0ab7">setRectOfInterest</a> (const QRectF &)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a3cfe5b26fc55a887ac85b0103ae80a3e">size</a> () const =0</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a841a56f909879d599a385b9c3d046745">~QwtSeriesData</a> ()</td></tr> <tr><td colspan="2"><h2><a name="pro-attribs"></a> Protected Attributes</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">QRectF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_series_data.html#a24fbbcb0baa0c728117d2e6764d00414">d_boundingRect</a></td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <div class="textblock"><h3>template<typename T><br/> class QwtSeriesData< T ></h3> <p>Abstract interface for iterating over samples. </p> <p>Qwt offers several implementations of the <a class="el" href="class_qwt_series_data.html" title="Abstract interface for iterating over samples.">QwtSeriesData</a> API, but in situations, where data of an application specific format needs to be displayed, without having to copy it, it is recommended to implement an individual data access. </p> </div><hr/><h2>Constructor & Destructor Documentation</h2> <a class="anchor" id="a3f075340d18fb112a342d74716eb8d9c"></a><!-- doxytag: member="QwtSeriesData::QwtSeriesData" ref="a3f075340d18fb112a342d74716eb8d9c" args="()" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T > </div> <table class="memname"> <tr> <td class="memname"><a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::<a class="el" href="class_qwt_series_data.html">QwtSeriesData</a> </td> <td>(</td> <td class="paramname"></td><td>)</td> <td></td> </tr> </table> </div> <div class="memdoc"> <p>Constructor. </p> </div> </div> <a class="anchor" id="a841a56f909879d599a385b9c3d046745"></a><!-- doxytag: member="QwtSeriesData::~QwtSeriesData" ref="a841a56f909879d599a385b9c3d046745" args="()" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T > </div> <table class="memname"> <tr> <td class="memname"><a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::~<a class="el" href="class_qwt_series_data.html">QwtSeriesData</a> </td> <td>(</td> <td class="paramname"></td><td>)</td> <td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Destructor. </p> </div> </div> <hr/><h2>Member Function Documentation</h2> <a class="anchor" id="aedb969ba51a27d88d26ad7f7cb1c2c7f"></a><!-- doxytag: member="QwtSeriesData::boundingRect" ref="aedb969ba51a27d88d26ad7f7cb1c2c7f" args="() const =0" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T> </div> <table class="memname"> <tr> <td class="memname">virtual QRectF <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::boundingRect </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [pure virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Calculate the bounding rect of all samples</p> <p>The bounding rect is necessary for autoscaling and can be used for a couple of painting optimizations.</p> <p>qwtBoundingRect(...) offers slow implementations iterating over the samples. For large sets it is recommended to implement something faster f.e. by caching the bounding rect. </p> <p>Implemented in <a class="el" href="class_qwt_point_series_data.html#ad5cf93cd9f518be6b0d910982cabd96d">QwtPointSeriesData</a>, <a class="el" href="class_qwt_point3_d_series_data.html#a94ea1834516a2a484712723b5c9625ca">QwtPoint3DSeriesData</a>, <a class="el" href="class_qwt_interval_series_data.html#afd9a41faed021eddcc1a9a36d15350d2">QwtIntervalSeriesData</a>, <a class="el" href="class_qwt_set_series_data.html#a63aef8f3405883ab886b06cd27aabe7c">QwtSetSeriesData</a>, <a class="el" href="class_qwt_point_array_data.html#a2d8b421115ba860e9d12a2266eeaef3b">QwtPointArrayData</a>, <a class="el" href="class_qwt_c_pointer_data.html#aecc3e98a3b2c4350212fa7b9e97110aa">QwtCPointerData</a>, and <a class="el" href="class_qwt_synthetic_point_data.html#a89296d373856825047f48e86d7731b0a">QwtSyntheticPointData</a>.</p> </div> </div> <a class="anchor" id="ae8650d16c07c58f01897ab48658a3266"></a><!-- doxytag: member="QwtSeriesData::sample" ref="ae8650d16c07c58f01897ab48658a3266" args="(size_t i) const =0" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T> </div> <table class="memname"> <tr> <td class="memname">virtual T <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::sample </td> <td>(</td> <td class="paramtype">size_t </td> <td class="paramname"><em>i</em></td><td>)</td> <td> const<code> [pure virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Return a sample </p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">i</td><td>Index </td></tr> </table> </dd> </dl> <dl class="return"><dt><b>Returns:</b></dt><dd>Sample at position i </dd></dl> <p>Implemented in <a class="el" href="class_qwt_array_series_data.html#af10504cdd3e506ab6b5502b1f17535d0">QwtArraySeriesData< T ></a>, <a class="el" href="class_qwt_point_array_data.html#ad2fa2b92a88d216fb4a74cb4b6ccbb9f">QwtPointArrayData</a>, <a class="el" href="class_qwt_c_pointer_data.html#a5e01b287eca7d0c4b52bbf514c5244d2">QwtCPointerData</a>, <a class="el" href="class_qwt_synthetic_point_data.html#a70d3ed6bfd764878f1709ab6b55e2f0e">QwtSyntheticPointData</a>, <a class="el" href="class_qwt_array_series_data.html#af10504cdd3e506ab6b5502b1f17535d0">QwtArraySeriesData< QwtIntervalSample ></a>, <a class="el" href="class_qwt_array_series_data.html#af10504cdd3e506ab6b5502b1f17535d0">QwtArraySeriesData< QPointF ></a>, <a class="el" href="class_qwt_array_series_data.html#af10504cdd3e506ab6b5502b1f17535d0">QwtArraySeriesData< QwtPoint3D ></a>, and <a class="el" href="class_qwt_array_series_data.html#af10504cdd3e506ab6b5502b1f17535d0">QwtArraySeriesData< QwtSetSample ></a>.</p> </div> </div> <a class="anchor" id="a81466c72589c03310543d17e1f1d0ab7"></a><!-- doxytag: member="QwtSeriesData::setRectOfInterest" ref="a81466c72589c03310543d17e1f1d0ab7" args="(const QRectF &)" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T > </div> <table class="memname"> <tr> <td class="memname">void <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::setRectOfInterest </td> <td>(</td> <td class="paramtype">const QRectF & </td> <td class="paramname"></td><td>)</td> <td><code> [virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Set a the "rect of interest"</p> <p><a class="el" href="class_qwt_plot_series_item.html" title="Class template for plot items representing a series of samples.">QwtPlotSeriesItem</a> defines the current area of the plot canvas as "rect of interest" ( <a class="el" href="class_qwt_plot_series_item.html#a5c40b692a48718b71bed27a1802c50d0">QwtPlotSeriesItem::updateScaleDiv()</a> ). It can be used to implement different levels of details.</p> <p>The default implementation does nothing. </p> <p>Reimplemented in <a class="el" href="class_qwt_synthetic_point_data.html#a39cc8512e7d8beecde003f7781174b84">QwtSyntheticPointData</a>.</p> </div> </div> <a class="anchor" id="a3cfe5b26fc55a887ac85b0103ae80a3e"></a><!-- doxytag: member="QwtSeriesData::size" ref="a3cfe5b26fc55a887ac85b0103ae80a3e" args="() const =0" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T> </div> <table class="memname"> <tr> <td class="memname">virtual size_t <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::size </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [pure virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <dl class="return"><dt><b>Returns:</b></dt><dd>Number of samples </dd></dl> <p>Implemented in <a class="el" href="class_qwt_array_series_data.html#a52c123dcc321a03ccd18c2c138318025">QwtArraySeriesData< T ></a>, <a class="el" href="class_qwt_point_array_data.html#a2222b2ad6346dc6357a412fc50ec8f56">QwtPointArrayData</a>, <a class="el" href="class_qwt_c_pointer_data.html#a780b9ae434856509cef9bbe954f03a3e">QwtCPointerData</a>, <a class="el" href="class_qwt_synthetic_point_data.html#a61b2cc26e1b5fa4a64e29273cf3e1599">QwtSyntheticPointData</a>, <a class="el" href="class_qwt_array_series_data.html#a52c123dcc321a03ccd18c2c138318025">QwtArraySeriesData< QwtIntervalSample ></a>, <a class="el" href="class_qwt_array_series_data.html#a52c123dcc321a03ccd18c2c138318025">QwtArraySeriesData< QPointF ></a>, <a class="el" href="class_qwt_array_series_data.html#a52c123dcc321a03ccd18c2c138318025">QwtArraySeriesData< QwtPoint3D ></a>, and <a class="el" href="class_qwt_array_series_data.html#a52c123dcc321a03ccd18c2c138318025">QwtArraySeriesData< QwtSetSample ></a>.</p> </div> </div> <hr/><h2>Member Data Documentation</h2> <a class="anchor" id="a24fbbcb0baa0c728117d2e6764d00414"></a><!-- doxytag: member="QwtSeriesData::d_boundingRect" ref="a24fbbcb0baa0c728117d2e6764d00414" args="" --> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename T> </div> <table class="memname"> <tr> <td class="memname">QRectF <a class="el" href="class_qwt_series_data.html">QwtSeriesData</a>< T >::<a class="el" href="class_qwt_series_data.html#a24fbbcb0baa0c728117d2e6764d00414">d_boundingRect</a><code> [mutable, protected]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Can be used to cache a calculated bounding rectangle. </p> </div> </div> </div> <hr class="footer"/><address class="footer"><small>Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </small></address> </body> </html>