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<a href="#pub-types">Public Types</a> &#124;
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<p><code>#include &lt;<a class="el" href="qwt__plot__item_8h_source.html">qwt_plot_item.h</a>&gt;</code></p>
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Inheritance diagram for QwtPlotItem:</div>
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<div class="center"><img src="class_qwt_plot_item__inherit__graph.png" border="0" usemap="#_qwt_plot_item_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_plot_item_inherit__map" id="_qwt_plot_item_inherit__map">
<area shape="rect" id="node5" href="class_qwt_plot_curve.html" title="A plot item, that represents a series of points." alt="" coords="369,5,468,32"/><area shape="rect" id="node7" href="class_qwt_plot_grid.html" title="A class which draws a coordinate grid." alt="" coords="373,56,465,83"/><area shape="rect" id="node9" href="class_qwt_plot_marker.html" title="A class for drawing markers." alt="" coords="365,107,472,133"/><area shape="rect" id="node11" href="class_qwt_plot_raster_item.html" title="A class, which displays raster data." alt="" coords="355,157,482,184"/><area shape="rect" id="node15" href="class_qwt_plot_scale_item.html" title="A class which draws a scale inside the plot canvas." alt="" coords="357,208,480,235"/><area shape="rect" id="node17" href="class_qwt_plot_svg_item.html" title="A plot item, which displays data in Scalable Vector Graphics (SVG) format." alt="" coords="362,259,475,285"/><area shape="rect" id="node2" href="class_qwt_legend_item_manager.html" title="Abstract API to bind plot items to the legend." alt="" coords="5,132,168,159"/><area shape="rect" id="node13" href="class_qwt_plot_spectrogram.html" title="A plot item, which displays a spectrogram." alt="" coords="531,157,671,184"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>

<p><a href="class_qwt_plot_item-members.html">List of all members.</a></p>
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<tr class="heading"><td colspan="2"><h2><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:ae0fabcdd35f4818ce5bbe019b0eed062"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a> { <br/>
&#160;&#160;<b>Legend</b> =  1, 
<br/>
&#160;&#160;<b>AutoScale</b> =  2
<br/>
 }</td></tr>
<tr class="memitem:abe0e8a39aceef9a600b73e02550a9704"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704">RenderHint</a> { <b>RenderAntialiased</b> =  1
 }</td></tr>
<tr class="memitem:ab149ac85e233ce9cedf2f2f2af871bf3"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ab149ac85e233ce9cedf2f2f2af871bf3">RttiValues</a> { <br/>
&#160;&#160;<b>Rtti_PlotItem</b> =  0, 
<br/>
&#160;&#160;<b>Rtti_PlotGrid</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotScale</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotMarker</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotCurve</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotHistogram</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotSpectrogram</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotSVG</b>, 
<br/>
&#160;&#160;<b>Rtti_PlotUserItem</b> =  1000
<br/>
 }</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a5d892ac856fb9176515c5f2d806161dc"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a5d892ac856fb9176515c5f2d806161dc">QwtPlotItem</a> (const <a class="el" href="class_qwt_text.html">QwtText</a> &amp;<a class="el" href="class_qwt_plot_item.html#a3859d011b670b5f89e45d1ccef9206f7">title</a>=<a class="el" href="class_qwt_text.html">QwtText</a>())</td></tr>
<tr class="memitem:a282a1d0424a06737f80e1fe83ccf7a0c"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a282a1d0424a06737f80e1fe83ccf7a0c"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a282a1d0424a06737f80e1fe83ccf7a0c">~QwtPlotItem</a> ()</td></tr>
<tr class="memitem:aeb2f676533ccae3436bf578824e2165e"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#aeb2f676533ccae3436bf578824e2165e">attach</a> (<a class="el" href="class_qwt_plot.html">QwtPlot</a> *<a class="el" href="class_qwt_plot_item.html#a4c99653a14a49ad94d466168d06e97b9">plot</a>)</td></tr>
<tr class="memitem:a4c2c1c77421229383b3c43cb777e3bfe"><td class="memItemLeft" align="right" valign="top">virtual QwtDoubleRect&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a4c2c1c77421229383b3c43cb777e3bfe">boundingRect</a> () const </td></tr>
<tr class="memitem:ab2bbee6dbe36a5f1d0ce853ac66716a6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ab2bbee6dbe36a5f1d0ce853ac66716a6">detach</a> ()</td></tr>
<tr class="memitem:a5483623e4fd1ae85b06b93523784358b"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a5483623e4fd1ae85b06b93523784358b">draw</a> (QPainter *painter, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;xMap, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;yMap, const QRect &amp;canvasRect) const =0</td></tr>
<tr class="memitem:a1faea017baa2492416a13e6bc3c144aa"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1faea017baa2492416a13e6bc3c144aa"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a1faea017baa2492416a13e6bc3c144aa">hide</a> ()</td></tr>
<tr class="memitem:a913adffa4cb6914f3248b7157b9bbf33"><td class="memItemLeft" align="right" valign="top">QwtDoubleRect&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a913adffa4cb6914f3248b7157b9bbf33">invTransform</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const QRect &amp;) const </td></tr>
<tr class="memitem:aeaf8eeb5f080017e181a5d7be798d789"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#aeaf8eeb5f080017e181a5d7be798d789">isVisible</a> () const </td></tr>
<tr class="memitem:ad956fdbce5b0721abccce6d09fe4d5ce"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ad956fdbce5b0721abccce6d09fe4d5ce">itemChanged</a> ()</td></tr>
<tr class="memitem:a09824eda5e564a853e6586bc387a3b4b"><td class="memItemLeft" align="right" valign="top">virtual QWidget *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a09824eda5e564a853e6586bc387a3b4b">legendItem</a> () const </td></tr>
<tr class="memitem:a97559cef0e65e59c48ca9bd3e7953b04"><td class="memItemLeft" align="right" valign="top">QRect&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a97559cef0e65e59c48ca9bd3e7953b04">paintRect</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;) const </td></tr>
<tr class="memitem:a4c99653a14a49ad94d466168d06e97b9"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a4c99653a14a49ad94d466168d06e97b9"></a>
<a class="el" href="class_qwt_plot.html">QwtPlot</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a4c99653a14a49ad94d466168d06e97b9">plot</a> () const </td></tr>
<tr class="memitem:af153b5a40a60ac626f1c58e69fc4ecad"><td class="memItemLeft" align="right" valign="top">virtual int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#af153b5a40a60ac626f1c58e69fc4ecad">rtti</a> () const </td></tr>
<tr class="memitem:a0a0181bc26a041b4e58f2810e55866bb"><td class="memItemLeft" align="right" valign="top">QwtDoubleRect&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a0a0181bc26a041b4e58f2810e55866bb">scaleRect</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;) const </td></tr>
<tr class="memitem:aaef9628d6194ae7bb53ac85a5950635a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#aaef9628d6194ae7bb53ac85a5950635a">setAxis</a> (int <a class="el" href="class_qwt_plot_item.html#a7af360bf6d5a5b6257ce6b0dd99b7525">xAxis</a>, int <a class="el" href="class_qwt_plot_item.html#ac7714ffa278a10e0cf45972e487b63ff">yAxis</a>)</td></tr>
<tr class="memitem:a5a335be8ff488809a2cf7f4b734ad1b6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute</a> (<a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a>, bool on=true)</td></tr>
<tr class="memitem:acd023c40f659c304ded324942865edc8"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#acd023c40f659c304ded324942865edc8">setRenderHint</a> (<a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704">RenderHint</a>, bool on=true)</td></tr>
<tr class="memitem:a1b74686181ab6dd5033917123c7db30f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a1b74686181ab6dd5033917123c7db30f">setTitle</a> (const QString &amp;<a class="el" href="class_qwt_plot_item.html#a3859d011b670b5f89e45d1ccef9206f7">title</a>)</td></tr>
<tr class="memitem:a2db3214b23b78274fa6f8c0321a76839"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a2db3214b23b78274fa6f8c0321a76839">setTitle</a> (const <a class="el" href="class_qwt_text.html">QwtText</a> &amp;<a class="el" href="class_qwt_plot_item.html#a3859d011b670b5f89e45d1ccef9206f7">title</a>)</td></tr>
<tr class="memitem:a5f0eeb2b72207fd8d33a95b0565657a1"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a5f0eeb2b72207fd8d33a95b0565657a1">setVisible</a> (bool)</td></tr>
<tr class="memitem:a81d3dd7feaadda4b0dbb8c13642046cf"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a81d3dd7feaadda4b0dbb8c13642046cf">setXAxis</a> (int axis)</td></tr>
<tr class="memitem:aa92dad876d76ce136925d5ae8f01db9a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#aa92dad876d76ce136925d5ae8f01db9a">setYAxis</a> (int axis)</td></tr>
<tr class="memitem:a57d90e4146133b59d589c71b3a643e82"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a57d90e4146133b59d589c71b3a643e82">setZ</a> (double <a class="el" href="class_qwt_plot_item.html#a4c58d814336643190b9f2918f80c30df">z</a>)</td></tr>
<tr class="memitem:a93a50fb9c86bc66617e28315e02281c3"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a93a50fb9c86bc66617e28315e02281c3"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a93a50fb9c86bc66617e28315e02281c3">show</a> ()</td></tr>
<tr class="memitem:aef70936d34ef661876692e6a06d4a464"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#aef70936d34ef661876692e6a06d4a464">testItemAttribute</a> (<a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a>) const </td></tr>
<tr class="memitem:ad4009381d6a26359125549e1cf874b69"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ad4009381d6a26359125549e1cf874b69">testRenderHint</a> (<a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704">RenderHint</a>) const </td></tr>
<tr class="memitem:a3859d011b670b5f89e45d1ccef9206f7"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_text.html">QwtText</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a3859d011b670b5f89e45d1ccef9206f7">title</a> () const </td></tr>
<tr class="memitem:ace79adb7c901ef5d729dba35265096c2"><td class="memItemLeft" align="right" valign="top">QRect&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ace79adb7c901ef5d729dba35265096c2">transform</a> (const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;, const QwtDoubleRect &amp;) const </td></tr>
<tr class="memitem:a193770cd20609a368c5130de59cb782e"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a193770cd20609a368c5130de59cb782e">updateLegend</a> (<a class="el" href="class_qwt_legend.html">QwtLegend</a> *) const </td></tr>
<tr class="memitem:abf6a70847d3db952161ca4d4a952eea0"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#abf6a70847d3db952161ca4d4a952eea0">updateScaleDiv</a> (const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &amp;, const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &amp;)</td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a7af360bf6d5a5b6257ce6b0dd99b7525">xAxis</a> () const </td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#ac7714ffa278a10e0cf45972e487b63ff">yAxis</a> () const </td></tr>
<tr class="memitem:a4c58d814336643190b9f2918f80c30df"><td class="memItemLeft" align="right" valign="top">double&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_plot_item.html#a4c58d814336643190b9f2918f80c30df">z</a> () const </td></tr>
<tr class="inherit_header pub_methods_class_qwt_legend_item_manager"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_legend_item_manager')"><img src="closed.png" alt="-"/>&nbsp;Public Member Functions inherited from <a class="el" href="class_qwt_legend_item_manager.html">QwtLegendItemManager</a></td></tr>
<tr class="memitem:a57827c099bdb5691820f749f3e5da710 inherit pub_methods_class_qwt_legend_item_manager"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a57827c099bdb5691820f749f3e5da710"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_legend_item_manager.html#a57827c099bdb5691820f749f3e5da710">QwtLegendItemManager</a> ()</td></tr>
<tr class="memitem:a8024d2ec1f7d289161311fa706e7cf61 inherit pub_methods_class_qwt_legend_item_manager"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8024d2ec1f7d289161311fa706e7cf61"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_legend_item_manager.html#a8024d2ec1f7d289161311fa706e7cf61">~QwtLegendItemManager</a> ()</td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Base class for items on the plot canvas. </p>
<p>A plot item is "something", that can be painted on the plot canvas, or only affects the scales of the plot widget. They can be categorized as:</p>
<ul>
<li>Representator<br/>
 A "Representator" is an item that represents some sort of data on the plot canvas. The different representator classes are organized according to the characteristics of the data:<ul>
<li><a class="el" href="class_qwt_plot_marker.html" title="A class for drawing markers.">QwtPlotMarker</a> Represents a point or a horizontal/vertical coordinate</li>
<li><a class="el" href="class_qwt_plot_curve.html" title="A plot item, that represents a series of points.">QwtPlotCurve</a> Represents a series of points</li>
<li><a class="el" href="class_qwt_plot_spectrogram.html" title="A plot item, which displays a spectrogram.">QwtPlotSpectrogram</a> ( <a class="el" href="class_qwt_plot_raster_item.html" title="A class, which displays raster data.">QwtPlotRasterItem</a> ) Represents raster data</li>
<li>...</li>
</ul>
</li>
</ul>
<ul>
<li>Decorators<br/>
 A "Decorator" is an item, that displays additional information, that is not related to any data:<ul>
<li><a class="el" href="class_qwt_plot_grid.html" title="A class which draws a coordinate grid.">QwtPlotGrid</a></li>
<li><a class="el" href="class_qwt_plot_scale_item.html" title="A class which draws a scale inside the plot canvas.">QwtPlotScaleItem</a></li>
<li><a class="el" href="class_qwt_plot_svg_item.html" title="A plot item, which displays data in Scalable Vector Graphics (SVG) format.">QwtPlotSvgItem</a></li>
<li>...</li>
</ul>
</li>
</ul>
<p>Depending on the <a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">QwtPlotItem::ItemAttribute</a> flags, an item is included into autoscaling or has an entry on the legnd.</p>
<p>Before misusing the existing item classes it might be better to implement a new type of plot item ( don't implement a watermark as spectrogram ). Deriving a new type of <a class="el" href="class_qwt_plot_item.html" title="Base class for items on the plot canvas.">QwtPlotItem</a> primarily means to implement the YourPlotItem::draw() method.</p>
<dl class="section see"><dt>See also:</dt><dd>The cpuplot example shows the implementation of additional <a class="el" href="class_qwt_plot_item.html#a4c99653a14a49ad94d466168d06e97b9" title="Return attached plot.">plot</a> items. </dd></dl>
</div><hr/><h2>Member Enumeration Documentation</h2>
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<p>Plot Item Attributes</p>
<ul>
<li>Legend<br/>
 The item is represented on the legend.</li>
<li>AutoScale <br/>
 The <a class="el" href="class_qwt_plot_item.html#a4c2c1c77421229383b3c43cb777e3bfe">boundingRect()</a> of the item is included in the autoscaling calculation.</li>
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<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute()</a>, <a class="el" href="class_qwt_plot_item.html#aef70936d34ef661876692e6a06d4a464">testItemAttribute()</a> </dd></dl>

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<p>Runtime type information. </p>
<p>RttiValues is used to cast plot items, without having to enable runtime type information of the compiler. </p>

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<hr/><h2>Constructor &amp; Destructor Documentation</h2>
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          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_text.html">QwtText</a> &amp;&#160;</td>
          <td class="paramname"><em>title</em> = <code><a class="el" href="class_qwt_text.html">QwtText</a>()</code></td><td>)</td>
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<p>Constructor </p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">title</td><td>Title of the item </td></tr>
  </table>
  </dd>
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<hr/><h2>Member Function Documentation</h2>
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          <td class="memname">void QwtPlotItem::attach </td>
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          <td class="paramtype"><a class="el" href="class_qwt_plot.html">QwtPlot</a> *&#160;</td>
          <td class="paramname"><em>plot</em></td><td>)</td>
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<p>Attach the item to a plot. </p>
<p>This method will attach a <a class="el" href="class_qwt_plot_item.html" title="Base class for items on the plot canvas.">QwtPlotItem</a> to the <a class="el" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> argument. It will first detach the <a class="el" href="class_qwt_plot_item.html" title="Base class for items on the plot canvas.">QwtPlotItem</a> from any plot from a previous call to attach (if necessary). If a NULL argument is passed, it will detach from any <a class="el" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> it was attached to.</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">plot</td><td>Plot widget </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#ab2bbee6dbe36a5f1d0ce853ac66716a6" title="This method detaches a QwtPlotItem from any QwtPlot it has been associated with.">QwtPlotItem::detach()</a> </dd></dl>

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<dl class="section return"><dt>Returns:</dt><dd>An invalid bounding rect: QwtDoubleRect(1.0, 1.0, -2.0, -2.0) </dd></dl>

<p>Reimplemented in <a class="el" href="class_qwt_plot_curve.html#a592742a3aa52a81bd9ea548e81a50f12">QwtPlotCurve</a>, <a class="el" href="class_qwt_plot_marker.html#a5ecbe55bda2502a3fd6410df42e28fb4">QwtPlotMarker</a>, <a class="el" href="class_qwt_plot_spectrogram.html#afb7eb7696bacd9235c5aeece2a652659">QwtPlotSpectrogram</a>, and <a class="el" href="class_qwt_plot_svg_item.html#a6d93e375e320cef36e00e88a8d9b7b36">QwtPlotSvgItem</a>.</p>

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<p>This method detaches a <a class="el" href="class_qwt_plot_item.html" title="Base class for items on the plot canvas.">QwtPlotItem</a> from any <a class="el" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> it has been associated with. </p>
<p><a class="el" href="class_qwt_plot_item.html#ab2bbee6dbe36a5f1d0ce853ac66716a6" title="This method detaches a QwtPlotItem from any QwtPlot it has been associated with.">detach()</a> is equivalent to calling attach( NULL ) </p>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#aeb2f676533ccae3436bf578824e2165e" title="Attach the item to a plot.">attach( QwtPlot* plot )</a> </dd></dl>

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          <td>(</td>
          <td class="paramtype">QPainter *&#160;</td>
          <td class="paramname"><em>painter</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>xMap</em>, </td>
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          <td class="paramname"><em>yMap</em>, </td>
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          <td class="paramtype">const QRect &amp;&#160;</td>
          <td class="paramname"><em>canvasRect</em>&#160;</td>
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          <td>)</td>
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<p>Draw the item. </p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">painter</td><td>Painter </td></tr>
    <tr><td class="paramname">xMap</td><td>Maps x-values into pixel coordinates. </td></tr>
    <tr><td class="paramname">yMap</td><td>Maps y-values into pixel coordinates. </td></tr>
    <tr><td class="paramname">canvasRect</td><td>Contents rect of the canvas in painter coordinates </td></tr>
  </table>
  </dd>
</dl>

<p>Implemented in <a class="el" href="class_qwt_plot_curve.html#a8d52afdd1612ccb4dbf3f410886e680b">QwtPlotCurve</a>, <a class="el" href="class_qwt_plot_marker.html#a2958b4b028b822f2b5e08fda061928e7">QwtPlotMarker</a>, <a class="el" href="class_qwt_plot_scale_item.html#af826e208a6c7ad7e16ad98046c0f23f6">QwtPlotScaleItem</a>, <a class="el" href="class_qwt_plot_spectrogram.html#ab76245f919a08375b1f975d507e2afea">QwtPlotSpectrogram</a>, <a class="el" href="class_qwt_plot_raster_item.html#a81b062af415a8df33262f23768fd71ad">QwtPlotRasterItem</a>, <a class="el" href="class_qwt_plot_grid.html#aa04412481976807628047ba376fb1a59">QwtPlotGrid</a>, and <a class="el" href="class_qwt_plot_svg_item.html#a92bad3b08f42f1ac9399b48b734b4c44">QwtPlotSvgItem</a>.</p>

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          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>xMap</em>, </td>
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          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>yMap</em>, </td>
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          <td class="paramtype">const QRect &amp;&#160;</td>
          <td class="paramname"><em>rect</em>&#160;</td>
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          <td>)</td>
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<p>Transform a rectangle from paint to scale coordinates</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">xMap</td><td>X map </td></tr>
    <tr><td class="paramname">yMap</td><td>Y map </td></tr>
    <tr><td class="paramname">rect</td><td>Rectangle in paint coordinates </td></tr>
  </table>
  </dd>
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<dl class="section return"><dt>Returns:</dt><dd>Rectangle in scale coordinates </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#ace79adb7c901ef5d729dba35265096c2">transform()</a> </dd></dl>

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          <td> const</td>
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<dl class="section return"><dt>Returns:</dt><dd>true if visible </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a5f0eeb2b72207fd8d33a95b0565657a1">setVisible()</a>, <a class="el" href="class_qwt_plot_item.html#a93a50fb9c86bc66617e28315e02281c3" title="Show the item.">show()</a>, <a class="el" href="class_qwt_plot_item.html#a1faea017baa2492416a13e6bc3c144aa" title="Hide the item.">hide()</a> </dd></dl>

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<p>Update the legend and call <a class="el" href="class_qwt_plot.html#aea78ab565d05b69b8730a4af2a11f07e" title="Replots the plot if QwtPlot::autoReplot() is true.">QwtPlot::autoRefresh</a> for the parent plot.</p>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a193770cd20609a368c5130de59cb782e" title="Update the widget that represents the item on the legend.">updateLegend()</a> </dd></dl>

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          <td>(</td>
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          <td> const</td>
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<p>Allocate the widget that represents the item on the legend. </p>
<p>The default implementation is made for <a class="el" href="class_qwt_plot_curve.html" title="A plot item, that represents a series of points.">QwtPlotCurve</a> and returns a QwtLegendItem(), but an item could be represented by any type of widget, by overloading <a class="el" href="class_qwt_plot_item.html#a09824eda5e564a853e6586bc387a3b4b" title="Allocate the widget that represents the item on the legend.">legendItem()</a> and <a class="el" href="class_qwt_plot_item.html#a193770cd20609a368c5130de59cb782e" title="Update the widget that represents the item on the legend.">updateLegend()</a>.</p>
<dl class="section return"><dt>Returns:</dt><dd>QwtLegendItem() </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a193770cd20609a368c5130de59cb782e" title="Update the widget that represents the item on the legend.">updateLegend()</a> QwtLegend() </dd></dl>

<p>Implements <a class="el" href="class_qwt_legend_item_manager.html#ac019b92797940db3cec2246a080598e0">QwtLegendItemManager</a>.</p>

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          <td class="memname">QRect QwtPlotItem::paintRect </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>xMap</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>yMap</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
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<p>Calculate the bounding paint rect of 2 maps. </p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">xMap</td><td>X map </td></tr>
    <tr><td class="paramname">yMap</td><td>X map</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>Bounding rect of the scale maps </dd></dl>

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          <td class="memname">int QwtPlotItem::rtti </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
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<p>Return rtti for the specific class represented. <a class="el" href="class_qwt_plot_item.html" title="Base class for items on the plot canvas.">QwtPlotItem</a> is simply a virtual interface class, and base classes will implement this method with specific rtti values so a user can differentiate them.</p>
<p>The rtti value is useful for environments, where the runtime type information is disabled and it is not possible to do a dynamic_cast&lt;...&gt;.</p>
<dl class="section return"><dt>Returns:</dt><dd>rtti value </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#ab149ac85e233ce9cedf2f2f2af871bf3" title="Runtime type information.">RttiValues</a> </dd></dl>

<p>Reimplemented in <a class="el" href="class_qwt_plot_curve.html#a1cb75062e781f4e0839a6cd2081c3928">QwtPlotCurve</a>, <a class="el" href="class_qwt_plot_spectrogram.html#a01197466f530633759337bbb7b8f7504">QwtPlotSpectrogram</a>, <a class="el" href="class_qwt_plot_marker.html#a4e48032adf8bdda1aacba4977280123f">QwtPlotMarker</a>, <a class="el" href="class_qwt_plot_scale_item.html#a72d7c46ade62f45f3dffa93931900d74">QwtPlotScaleItem</a>, <a class="el" href="class_qwt_plot_svg_item.html#a4331deca8a2ecdd6a7ebe1be7de22969">QwtPlotSvgItem</a>, and <a class="el" href="class_qwt_plot_grid.html#aae0d0b5afbc670dd257302b13601ea99">QwtPlotGrid</a>.</p>

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          <td class="memname">QwtDoubleRect QwtPlotItem::scaleRect </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>xMap</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>yMap</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Calculate the bounding scale rect of 2 maps. </p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">xMap</td><td>X map </td></tr>
    <tr><td class="paramname">yMap</td><td>X map</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>Bounding rect of the scale maps </dd></dl>

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          <td class="memname">void QwtPlotItem::setAxis </td>
          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>xAxis</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>yAxis</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Set X and Y axis</p>
<p>The item will painted according to the coordinates its Axes.</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">xAxis</td><td>X Axis </td></tr>
    <tr><td class="paramname">yAxis</td><td>Y Axis</td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a81d3dd7feaadda4b0dbb8c13642046cf">setXAxis()</a>, <a class="el" href="class_qwt_plot_item.html#aa92dad876d76ce136925d5ae8f01db9a">setYAxis()</a>, <a class="el" href="class_qwt_plot_item.html#a7af360bf6d5a5b6257ce6b0dd99b7525" title="Return xAxis.">xAxis()</a>, <a class="el" href="class_qwt_plot_item.html#ac7714ffa278a10e0cf45972e487b63ff" title="Return yAxis.">yAxis()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setItemAttribute </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a>&#160;</td>
          <td class="paramname"><em>attribute</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>on</em> = <code>true</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Toggle an item attribute</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">attribute</td><td>Attribute type </td></tr>
    <tr><td class="paramname">on</td><td>true/false</td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#aef70936d34ef661876692e6a06d4a464">testItemAttribute()</a>, <a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setRenderHint </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704">RenderHint</a>&#160;</td>
          <td class="paramname"><em>hint</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>on</em> = <code>true</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
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<p>Toggle an render hint</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">hint</td><td>Render hint </td></tr>
    <tr><td class="paramname">on</td><td>true/false</td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#ad4009381d6a26359125549e1cf874b69">testRenderHint()</a>, <a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704" title="Render hints.">RenderHint</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setTitle </td>
          <td>(</td>
          <td class="paramtype">const QString &amp;&#160;</td>
          <td class="paramname"><em>title</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>Set a new title</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">title</td><td>Title </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a3859d011b670b5f89e45d1ccef9206f7">title()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setTitle </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_text.html">QwtText</a> &amp;&#160;</td>
          <td class="paramname"><em>title</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>Set a new title</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">title</td><td>Title </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a3859d011b670b5f89e45d1ccef9206f7">title()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setVisible </td>
          <td>(</td>
          <td class="paramtype">bool&#160;</td>
          <td class="paramname"><em>on</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
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<p>Show/Hide the item</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">on</td><td>Show if true, otherwise hide </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#aeaf8eeb5f080017e181a5d7be798d789">isVisible()</a>, <a class="el" href="class_qwt_plot_item.html#a93a50fb9c86bc66617e28315e02281c3" title="Show the item.">show()</a>, <a class="el" href="class_qwt_plot_item.html#a1faea017baa2492416a13e6bc3c144aa" title="Hide the item.">hide()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setXAxis </td>
          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>axis</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>Set the X axis</p>
<p>The item will painted according to the coordinates its Axes.</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">axis</td><td>X Axis </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#aaef9628d6194ae7bb53ac85a5950635a">setAxis()</a>, <a class="el" href="class_qwt_plot_item.html#aa92dad876d76ce136925d5ae8f01db9a">setYAxis()</a>, <a class="el" href="class_qwt_plot_item.html#a7af360bf6d5a5b6257ce6b0dd99b7525" title="Return xAxis.">xAxis()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setYAxis </td>
          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>axis</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>Set the Y axis</p>
<p>The item will painted according to the coordinates its Axes.</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">axis</td><td>Y Axis </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#aaef9628d6194ae7bb53ac85a5950635a">setAxis()</a>, <a class="el" href="class_qwt_plot_item.html#a81d3dd7feaadda4b0dbb8c13642046cf">setXAxis()</a>, <a class="el" href="class_qwt_plot_item.html#ac7714ffa278a10e0cf45972e487b63ff" title="Return yAxis.">yAxis()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::setZ </td>
          <td>(</td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>z</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
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<p>Set the z value. </p>
<p>Plot items are painted in increasing z-order.</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">z</td><td>Z-value </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a4c58d814336643190b9f2918f80c30df">z()</a>, <a class="el" href="class_qwt_plot_dict.html#a9cbb1c5c22de93594b7e2524af108f55" title="A QwtPlotItemList of all attached plot items.">QwtPlotDict::itemList()</a> </dd></dl>

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          <td class="memname">bool QwtPlotItem::testItemAttribute </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a>&#160;</td>
          <td class="paramname"><em>attribute</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
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<p>Test an item attribute</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">attribute</td><td>Attribute type </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>true/false </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute()</a>, <a class="el" href="class_qwt_plot_item.html#ae0fabcdd35f4818ce5bbe019b0eed062">ItemAttribute</a> </dd></dl>

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          <td class="memname">bool QwtPlotItem::testRenderHint </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704">RenderHint</a>&#160;</td>
          <td class="paramname"><em>hint</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
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<p>Test a render hint</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">hint</td><td>Render hint </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>true/false </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#acd023c40f659c304ded324942865edc8">setRenderHint()</a>, <a class="el" href="class_qwt_plot_item.html#abe0e8a39aceef9a600b73e02550a9704" title="Render hints.">RenderHint</a> </dd></dl>

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          <td class="memname">const <a class="el" href="class_qwt_text.html">QwtText</a> &amp; QwtPlotItem::title </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns:</dt><dd>Title of the item </dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a1b74686181ab6dd5033917123c7db30f">setTitle()</a> </dd></dl>

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          <td class="memname">QRect QwtPlotItem::transform </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>xMap</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> &amp;&#160;</td>
          <td class="paramname"><em>yMap</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const QwtDoubleRect &amp;&#160;</td>
          <td class="paramname"><em>rect</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
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<p>Transform a rectangle</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">xMap</td><td>X map </td></tr>
    <tr><td class="paramname">yMap</td><td>Y map </td></tr>
    <tr><td class="paramname">rect</td><td>Rectangle in scale coordinates </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns:</dt><dd>Rectangle in paint coordinates</dd></dl>
<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a913adffa4cb6914f3248b7157b9bbf33">invTransform()</a> </dd></dl>

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          <td class="memname">void QwtPlotItem::updateLegend </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_legend.html">QwtLegend</a> *&#160;</td>
          <td class="paramname"><em>legend</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
  </td>
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<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
  </tr>
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<p>Update the widget that represents the item on the legend. </p>
<p><a class="el" href="class_qwt_plot_item.html#a193770cd20609a368c5130de59cb782e" title="Update the widget that represents the item on the legend.">updateLegend()</a> is called from <a class="el" href="class_qwt_plot_item.html#ad956fdbce5b0721abccce6d09fe4d5ce">itemChanged()</a> to adopt the widget representing the item on the legend to its new configuration.</p>
<p>The default implementation is made for <a class="el" href="class_qwt_plot_curve.html" title="A plot item, that represents a series of points.">QwtPlotCurve</a> and updates a QwtLegendItem(), but an item could be represented by any type of widget, by overloading <a class="el" href="class_qwt_plot_item.html#a09824eda5e564a853e6586bc387a3b4b" title="Allocate the widget that represents the item on the legend.">legendItem()</a> and <a class="el" href="class_qwt_plot_item.html#a193770cd20609a368c5130de59cb782e" title="Update the widget that represents the item on the legend.">updateLegend()</a>.</p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">legend</td><td>Legend</td></tr>
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<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot_item.html#a09824eda5e564a853e6586bc387a3b4b" title="Allocate the widget that represents the item on the legend.">legendItem()</a>, <a class="el" href="class_qwt_plot_item.html#ad956fdbce5b0721abccce6d09fe4d5ce">itemChanged()</a>, QwtLegend() </dd></dl>

<p>Implements <a class="el" href="class_qwt_legend_item_manager.html#ad3bd052ea242ef8595c7d6008b9cc6f4">QwtLegendItemManager</a>.</p>

<p>Reimplemented in <a class="el" href="class_qwt_plot_curve.html#aedbca95048e4c7b42cd0bf486ec36b4d">QwtPlotCurve</a>.</p>

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          <td class="memname">void QwtPlotItem::updateScaleDiv </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &amp;&#160;</td>
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          <td>)</td>
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<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
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<p>Update the item to changes of the axes scale division. </p>
<p>Update the item, when the axes of plot have changed. The default implementation does nothing, but items that depend on the scale division (like QwtPlotGrid()) have to reimplement <a class="el" href="class_qwt_plot_item.html#abf6a70847d3db952161ca4d4a952eea0" title="Update the item to changes of the axes scale division.">updateScaleDiv()</a></p>
<dl class="params"><dt>Parameters:</dt><dd>
  <table class="params">
    <tr><td class="paramname">xScaleDiv</td><td>Scale division of the x-axis </td></tr>
    <tr><td class="paramname">yScaleDiv</td><td>Scale division of the y-axis</td></tr>
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<dl class="section see"><dt>See also:</dt><dd><a class="el" href="class_qwt_plot.html#a1fb2dbc3697a66024d48c08b1d18f8a5" title="Rebuild the scales.">QwtPlot::updateAxes()</a> </dd></dl>

<p>Reimplemented in <a class="el" href="class_qwt_plot_scale_item.html#a9c32bac1ff73c6527305698792a6edfe">QwtPlotScaleItem</a>, and <a class="el" href="class_qwt_plot_grid.html#ad15166f257160adc90b60b9e29d69edf">QwtPlotGrid</a>.</p>

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          <td class="memname">double QwtPlotItem::z </td>
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<p>Plot items are painted in increasing z-order.</p>
<dl class="section return"><dt>Returns:</dt><dd><a class="el" href="class_qwt_plot_item.html#a57d90e4146133b59d589c71b3a643e82" title="Set the z value.">setZ()</a>, <a class="el" href="class_qwt_plot_dict.html#a9cbb1c5c22de93594b7e2524af108f55" title="A QwtPlotItemList of all attached plot items.">QwtPlotDict::itemList()</a> </dd></dl>

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