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<TITLE>Visualization</TITLE>
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<div class="title">Visualization </div> </div>
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<div class="textblock"><p>Visualization in OpenMS is based on Qt.</p>
<h1><a class="anchor" id="visualization_1D"></a>
1D view</h1>
<p>All types of peak or feature visualization share a common interface. So here only an example how to visualize a single spectrum is given (Tutorial_GUI_Spectrum1D.C).</p>
<p>First we need to create a <em><a class="el" href="classQApplication.html">QApplication</a></em> in order to be able to use Qt widgets in out application. <div class="fragment"><div class="line"><a class="code" href="classInt.html">Int</a> <a class="code" href="RNPxl_8C.html#a217dbf8b442f20279ea00b898af96f52">main</a>(<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span> ** argv)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordflow">if</span> (argc < 2) <span class="keywordflow">return</span> 1;</div>
<div class="line"> <span class="comment">// the path to the data should be given on the command line</span></div>
<div class="line"> String tutorial_data_path(argv[1]);</div>
<div class="line"> </div>
<div class="line"> <a class="code" href="classQApplication.html">QApplication</a> app(argc, const_cast<char **>(argv));</div>
</div><!-- fragment --></p>
<p>Then we load a DTA file (the first command line argument of our application). <div class="fragment"><div class="line"></div>
<div class="line"> PeakMap exp;</div>
<div class="line"> exp.resize(1);</div>
<div class="line"> DTAFile().load(tutorial_data_path + <span class="stringliteral">"/data/Tutorial_Spectrum1D.dta"</span>, exp[0]);</div>
</div><!-- fragment --></p>
<p>Then we create a widget for 1D visualization and hand over the data. <div class="fragment"><div class="line"> LayerData::ExperimentSharedPtrType exp_sptr(<span class="keyword">new</span> <a class="code" href="group__Kernel.html#gac459ab9d68b68f31561c7763c7da61ef">PeakMap</a>(exp));</div>
<div class="line"> Spectrum1DWidget * widget = <span class="keyword">new</span> Spectrum1DWidget(Param(), 0);</div>
<div class="line"> widget->canvas()->addLayer(exp_sptr);</div>
<div class="line"> widget->show();</div>
</div><!-- fragment --></p>
<p>Finally we start the application. <div class="fragment"><div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> app.exec();</div>
<div class="line">} <span class="comment">//end of main</span></div>
</div><!-- fragment --></p>
<h1><a class="anchor" id="visualization_param"></a>
Visual editing of parameters</h1>
<p><em>Param</em> objects are used to set algorithm parameters in OpenMS. In order to be able to visually edit them, the <em>ParamEditor</em> class can be used. The following example (Tutorial_GUI_ParamEditor.C) show how to use it.</p>
<p>We need to create a <a class="el" href="classQApplication.html">QApplication</a>, load the data from a file (e.g. the parameters file of any TOPP tool), create the <em>ParamEditor</em> and execute the application: <div class="fragment"><div class="line"><a class="code" href="classInt.html">Int</a> <a class="code" href="RNPxl_8C.html#a217dbf8b442f20279ea00b898af96f52">main</a>(<span class="keywordtype">int</span> argc, <span class="keyword">const</span> <span class="keywordtype">char</span>** argv)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordflow">if</span> (argc < 2) <span class="keywordflow">return</span> 1;</div>
<div class="line"> <span class="comment">// the path to the data should be given on the command line</span></div>
<div class="line"> String tutorial_data_path(argv[1]);</div>
<div class="line"> </div>
<div class="line"> <a class="code" href="classQApplication.html">QApplication</a> app(argc, const_cast<char**>(argv));</div>
<div class="line"></div>
<div class="line"> Param param;</div>
<div class="line"> ParamXMLFile paramFile;</div>
<div class="line"></div>
<div class="line"> paramFile.load(tutorial_data_path + <span class="stringliteral">"/data/Tutorial_ParamEditor.ini"</span>, param);</div>
<div class="line"></div>
<div class="line"> ParamEditor* editor = <span class="keyword">new</span> ParamEditor(0);</div>
<div class="line"> editor->load(param);</div>
<div class="line"> editor->show();</div>
<div class="line"></div>
<div class="line"> app.exec();</div>
</div><!-- fragment --></p>
<p>When it is closed, we store the result back to the <em>Param</em> object and then to the file. <div class="fragment"><div class="line"></div>
<div class="line"> editor->store();</div>
<div class="line"> paramFile.store(<span class="stringliteral">"Tutorial_ParamEditor_out.ini"</span>, param);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">} <span class="comment">//end of main</span></div>
</div><!-- fragment --> </p>
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<TD><font color="#c0c0c0">OpenMS / TOPP release 1.11.1</font></TD>
<TD align="right"><font color="#c0c0c0">Documentation generated on Thu Nov 14 2013 11:19:24 using doxygen 1.8.5</font></TD>
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