<html><head>
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</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 14px; font-family: Calibri, sans-serif; "><div style="color: rgb(0, 0, 0); ">I am calling it in the constructor… actually, it is the first call in the constructor.</div><div style="color: rgb(0, 0, 0); "><br></div><div>
<p style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><br></p>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#55ffff;">//---------------------------------------------------------------</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#55ffff;">// Constructors and Destructors</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#55ffff;">//---------------------------------------------------------------</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#55ff55;">vtkGenericReader</span><span style=" color:#aaaaaa;">::</span><span style=" color:#55ff55;">vtkGenericReader</span><span style=" color:#aaaaaa;">()</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#aaaaaa;">{</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#55ffff;">//set the number of output ports you will need</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#ffff55;">this</span><span style=" color:#aaaaaa;">-></span><span style=" font-style:italic;">SetNumberOfOutputPorts</span><span style=" color:#aaaaaa;">(</span><span style=" color:#ff55ff;">2</span><span style=" color:#aaaaaa;">);</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><br></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#55ffff;">//set the number of input ports</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#ffff55;">this</span><span style=" color:#aaaaaa;">-></span><span style=" font-style:italic;">SetNumberOfInputPorts</span><span style=" color:#aaaaaa;">(</span><span style=" color:#ff55ff;">0</span><span style=" color:#aaaaaa;">);</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><br></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#55ffff;">//configure array status selectors</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#ffff55;">this</span><span style=" color:#aaaaaa;">-></span>PointDataArraySelection<span style=" color:#c0c0c0;"> </span><span style=" color:#aaaaaa;">=</span><span style=" color:#c0c0c0;"> </span><span style=" color:#55ff55;">vtkDataArraySelection</span><span style=" color:#aaaaaa;">::</span>New<span style=" color:#aaaaaa;">();</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#c0c0c0;"> </span><span style=" color:#ffff55;">this</span><span style=" color:#aaaaaa;">-></span>CellDataArraySelection<span style=" color:#c0c0c0;"> </span><span style=" color:#aaaaaa;">=</span><span style=" color:#c0c0c0;"> </span><span style=" color:#55ff55;">vtkDataArraySelection</span><span style=" color:#aaaaaa;">::</span>New<span style=" color:#aaaaaa;">();</span></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><br></pre>
<pre style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span style=" color:#aaaaaa;">}</span><!--EndFragment--></pre><pre style="margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><font class="Apple-style-span" color="#aaaaaa"><br></font></pre><pre style="margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><font class="Apple-style-span" color="#aaaaaa"><br></font></pre><pre style="margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; text-indent: 0px; "><span class="Apple-style-span" style="font-size: 14px; white-space: normal; font-family: Calibri, sans-serif; "><pre style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; ">Joshua Murphy<o:p></o:p></pre><pre style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; ">Laboratory for Atmospheric and Space Physics<o:p></o:p></pre><pre style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; ">University of Colorado, Boulder<o:p></o:p></pre><pre style="margin-top: 0cm; margin-right: 0cm; margin-left: 0cm; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; "><o:p> </o:p></pre></span></pre></div><div style="color: rgb(0, 0, 0); "><br></div><span id="OLK_SRC_BODY_SECTION" style="color: rgb(0, 0, 0); "><div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> <Biddiscombe>, "John A." <<a href="mailto:biddisco@cscs.ch">biddisco@cscs.ch</a>><br><span style="font-weight:bold">To: </span> Joshua Murphy <<a href="mailto:joshua.murphy@lasp.colorado.edu">joshua.murphy@lasp.colorado.edu</a>>, "<a href="mailto:paraview-developers@paraview.org">paraview-developers@paraview.org</a>" <<a href="mailto:paraview-developers@paraview.org">paraview-developers@paraview.org</a>><br><span style="font-weight:bold">Subject: </span> RE: [Paraview-developers] Question about using multiple ports in ParaView reader<br></div><div><br></div><div 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"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div lang="EN-GB" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; ">><o:p> </o:p></span></p><ol start="1" type="1"><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; ">specify the number of output ports with this->SetNumberOfOutputPorts(2)<o:p></o:p></span></li></ol><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><<o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Are you doing that in the constructor or somewhere else? The fact that you get one port NULL on first iteration hints that you’re calling this function too
late.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">Just a thought<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">JB<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125); font-family: Calibri, sans-serif; "><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span lang="EN-US" style="font-size: 10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span lang="EN-US" style="font-size: 10pt; font-family: Tahoma, sans-serif; "> <a href="mailto:paraview-developers-bounces@paraview.org">paraview-developers-bounces@paraview.org</a> [<a href="mailto:paraview-developers-bounces@paraview.org">mailto:paraview-developers-bounces@paraview.org</a>]
<b>On Behalf Of </b>Joshua Murphy<br><b>Sent:</b> 03 July 2012 21:31<br><b>To:</b> <a href="mailto:paraview-developers@paraview.org">paraview-developers@paraview.org</a><br><b>Subject:</b> [Paraview-developers] Question about using multiple ports in ParaView reader<o:p></o:p></span></p></div></div><p class="MsoNormal"><o:p> </o:p></p><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; ">Hello,<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; ">I am attempting to write a reader that handles both structured grids and meta-data. It was recommended to me that I use multiple ports, and populate a vtkTable
with the meta-data.<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; ">I think I am having some conceptual problems with how this is supposed to work.<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; ">I have written a dummy reader in an attempt to get the meta-data working prior to porting it to my real reader, but I am having trouble…<o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; color: black; font-family: Calibri, sans-serif; ">My understanding is that I need to <o:p></o:p></span></p></div><div><p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; "><o:p> </o:p></span></p></div><ol start="1" type="1"><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo2"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; ">specify the number of output ports with this->SetNumberOfOutputPorts(2)<o:p></o:p></span></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo2"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; ">Populate the output port information<o:p></o:p></span></li></ol><blockquote style="margin-left:30.0pt;margin-right:0cm"><div><p class="MsoNormal"><span class="apple-style-span"><span style="font-size: 10.5pt; font-family: 'Courier New'; ">int vtkGenericReader::<i>FillOutputPortInformation</i>(int port, vtkInformation* info)</span></span><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; "><o:p></o:p></span></p></div></blockquote><blockquote style="margin-left:30.0pt;margin-right:0cm"><div><pre>{<o:p></o:p></pre><pre> switch(port)<o:p></o:p></pre><pre> {<o:p></o:p></pre><pre> case 0:<o:p></o:p></pre><pre> info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkStructuredGrid");<o:p></o:p></pre><pre> break;<o:p></o:p></pre><pre> case 1:<o:p></o:p></pre><pre> info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTable");<o:p></o:p></pre><pre> break;<o:p></o:p></pre><pre> }<o:p></o:p></pre><pre> return 1;<o:p></o:p></pre><pre>}<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>3. Get the informationObject from the outputVector<o:p></o:p></pre><pre><span class="apple-tab-span"> </span>outputvector->GetInformationObject(1);<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>4. Get the table data<o:p></o:p></pre><pre><span class="apple-tab-span"> </span> this->MetaData = dynamic_cast<vtkTable*><o:p></o:p></pre><pre style="-qt-block-indent:0"> (this->MetaDataOutInfo->Get(vtkDataObject::DATA_OBJECT()));<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">5. Add string to the table<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:#55FF55">vtkStringArray</span><span style="color:silver"> </span><span style="color:#AAAAAA">*</span>MetaString<span style="color:silver"> </span><span style="color:#AAAAAA">=</span><span style="color:silver"> </span><span style="color:#55FF55">vtkStringArray</span><span style="color:#AAAAAA">::</span>New<span style="color:#AAAAAA">();</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span>MetaString<span style="color:#AAAAAA">-></span><i>SetName</i><span style="color:#AAAAAA">(</span><span style="color:#FF55FF">"Meta Data"</span><span style="color:#AAAAAA">);</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span>MetaString<span style="color:#AAAAAA">-></span><i>SetNumberOfComponents</i><span style="color:#AAAAAA">(</span><span style="color:#FF55FF">1</span><span style="color:#AAAAAA">);</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span>MetaString<span style="color:#AAAAAA">-></span>InsertNextValue<span style="color:#AAAAAA">(</span><span style="color:#FF55FF">"This is a Test"</span><span style="color:#AAAAAA">);</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span>MetaString<span style="color:#AAAAAA">-></span>InsertNextValue<span style="color:#AAAAAA">(</span><span style="color:#FF55FF">"Test 2"</span><span style="color:#AAAAAA">);</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span>MetaString<span style="color:#AAAAAA">-></span>InsertNextValue<span style="color:#AAAAAA">(</span><span style="color:#FF55FF">"Test 3"</span><span style="color:#AAAAAA">);</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span style="color:silver"> </span><span style="color:#FFFF55">this</span><span style="color:#AAAAAA">-></span>MetaData<span style="color:#AAAAAA">-></span>AddColumn<span style="color:#AAAAAA">(</span>MetaString<span style="color:#AAAAAA">);</span><o:p></o:p></pre><pre style="-qt-block-indent:0"><span class="apple-tab-span"> </span><o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">It is my understanding that this information should then be available in the ParaView GUI.<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">The problems I am having are this:<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><div><div><pre style="-qt-block-indent:0">1. When attempting to get both port information objects on the first call to RequestInformation(), port 1 returns a NULL object. On the SECOND call to GetInformation(), both ports are available.<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre></div><div><pre style="-qt-block-indent:0">2. All calls to RequestData() only provide access to port 0 in the Output information Vector. I can access port 1 if I utilize this->getExecutive()->getOutputInformation(1)<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">3. When using #2 to get the information, I populate, but I am unsure where/how things are supposed to be accessible in the GUI.<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">What I am trying to do is be able to access the meta-data values from within ParaView so that I can utilize data values, units, model run data, etc.<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">If anyone can help me understand what is supposed to be going on, or if I am completely doing something wrong, I would be grateful! Am I missing some steps? Do I need to have XML code to access the vtkTable?<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">Thanks,<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre><pre style="-qt-block-indent:0">Joshua Murphy<o:p></o:p></pre><pre style="-qt-block-indent:0">Laboratory for Atmospheric and Space Physics<o:p></o:p></pre><pre style="-qt-block-indent:0">University of Colorado, Boulder<o:p></o:p></pre><pre style="-qt-block-indent:0"><o:p> </o:p></pre></div></div></div></blockquote></div></div></div></span></body></html>