<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="DE" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<pre><span lang="EN-US" style="color:#26282A">Dear all,<o:p></o:p></span></pre>
<div>
<pre><span lang="EN-US" style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US">Based on the<span style="color:#26282A"> example <o:p></o:p></span></span></pre>
</div>
<div>
<pre><span style="color:#26282A"><a href="https://www.vtk.org/Wiki/VTK/Examples/Cxx/InfoVis/ParallelCoordinatesView">https://www.vtk.org/Wiki/VTK/Examples/Cxx/InfoVis/ParallelCoordinatesView</a><o:p></o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">I created a simple Qt project </span><span lang="EN-US">using<span style="color:#26282A"> the class vtkParallelCoordinatesView. </span> <span style="color:#26282A">It has only a main window with a PushButton and a QWidget to launch a file</span><o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A">opening dialog for any CSV file and view its content. </span><span lang="EN-US" style="color:#26282A">I also created a Qt Form</span><span lang="EN-US"> <span style="color:#26282A">Class called "ParallelCoordinatesView" with the public function "View",</span> <span style="color:#26282A">which contains the CSV file reading and the parallel coordinates visualization code from the example.</span> <span style="color:#26282A">I attached the files.</span><o:p></o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">There are two issues with the functions setting up the render</span><span lang="EN-US"> <span style="color:#26282A">window and the interactor in the public function "View".</span><o:p></o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A">These function calls are commented out in the code:<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> // Set up render window<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> view->GetRenderer()->SetBackground(1.0, 1.0, 1.0);<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> view->GetRenderer()->GradientBackgroundOff();<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> view->GetRenderWindow()->SetSize(1200,600);<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> //view->SetInteractor(renderWindowInteractor);<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> //view->SetRenderWindow(renderWindow);<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> view->ResetCamera();<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> view->Render();<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> //view->GetInteractor()->Start();<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">When I compile and run the code in this form, the </span><span lang="EN-US">parallel coordinates <span style="color:#26282A">view appears in a</span> window<span style="color:#26282A"> </span>detached<span style="color:#26282A"> from</span> <span style="color:#26282A">the Qt </span>M<span style="color:#26282A">ain</span>W<span style="color:#26282A">indow after </span>the <span style="color:#26282A">file </span>test.csv <span style="color:#26282A">has been read from the </span>f<span style="color:#26282A">ile opening dialog. </span><o:p></o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A">If I remove the comments only from <o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> //view->SetInteractor(renderWindowInteractor);<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"> //view->SetRenderWindow(renderWindow);<o:p></o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US">and <span style="color:#26282A">compile and run the code then the view window appears in the QWidget in the MainWindow, as expected,<o:p></o:p></span></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">but </span><span lang="EN-US">a<span style="color:#26282A">s soon as I start to move the cursor, everything blacks out in the Mainwindow.<o:p></o:p></span></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A">If remove the comment only from the line </span><o:p></o:p></pre>
<pre><span lang="EN-US" style="color:#26282A"> //view->GetInteractor()->Start();<o:p></o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">the I can select lines in the parallel coodinates view</span><span lang="EN-US"> vindow<span style="color:#26282A">, as expected with starting the interactor,<o:p></o:p></span></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">but the Mainwindow hangs</span><span lang="EN-US">.<span style="color:#26282A"> <o:p></o:p></span></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span lang="EN-US" style="color:#26282A">I would like to ask if there is a proper setup of the render window and the interactor for the class vtkParallelCoordinatesView with Qt? </span><span style="color:#26282A">Th</span>an<span style="color:#26282A">k you very much for your help.</span><span lang="EN-US"><o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A"><o:p> </o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A">Kind regards,<o:p></o:p></span></pre>
</div>
<div>
<pre><span style="color:#26282A">Zoltan<o:p></o:p></span></pre>
</div>
<pre><span style="color:#26282A"><o:p> </o:p></span></pre>
</div>
</body>
</html>