I'ld sit down with a debugger and see which request exactly is failing and why.<div><br></div><div>Try overriding vtkAlgorithm::ProcessRequest() in your filter so that you can easily get a breakpoint in an instance of your class.</div>
<div><br></div><div>In that method call PrintSelf(cerr, vtkIndent(0)) on the "request" vtkInformation. Put the breakpoint right after that.</div><div>After the breakpoint call this->Superclass::ProcessRequest().</div>
<div><br></div><div>When the PrintSelf tells you which request fails, rerun and step in until you see why the handling method returns.</div><div><br></div><div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>
Clifton Park, NY 12065-8662<br>Phone: 518-881-4909<br>
<br><br><div class="gmail_quote">On Fri, Jan 20, 2012 at 3:34 PM, Sohail Shafii <span dir="ltr"><<a href="mailto:sohailshafii@yahoo.com">sohailshafii@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:12pt;font-family:arial,helvetica,sans-serif"><div style="font-family:arial,helvetica,sans-serif;font-size:12pt"><span>Thanks. I get these sorts of errors:</span></div><div><span>vtkPVCompositeDataPipeline (0x2a831a0): Algorithm vtkFastMarcher(0x2a80860) returned failure for request: vtkInformation (0x339b0f0<br>
</span></div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt">Before RequestData is reached...</div><span class="HOEnZb"><font color="#888888"><div style="font-family:arial,helvetica,sans-serif;font-size:12pt">
<br></div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt">Sohail</div> </font></span><div style="font-size:12pt;font-family:arial,helvetica,sans-serif"> <div style="font-size:12pt;font-family:'times new roman','new york',times,serif">
<div dir="ltr"> <font face="Arial"> <hr size="1"><div class="hm HOEnZb"> <b><span style="font-weight:bold">From:</span></b>
David E DeMarle <<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>><br> <b><span style="font-weight:bold">To:</span></b> Sohail Shafii <<a href="mailto:sohailshafii@yahoo.com" target="_blank">sohailshafii@yahoo.com</a>> <br>
<b><span style="font-weight:bold">Cc:</span></b> "<a href="mailto:paraview@paraview.org" target="_blank">paraview@paraview.org</a>" <<a href="mailto:paraview@paraview.org" target="_blank">paraview@paraview.org</a>> <br>
<b><span style="font-weight:bold">Sent:</span></b> Friday, January 20, 2012 11:42 AM<br> <b><span style="font-weight:bold">Subject:</span></b> Re: [Paraview] vtkDataSet algorithm that takes composite data set as input<br>
</div></font><div class="hm HOEnZb"> </div></div><div><div class="h5"> <br>
<div>Try something like this.<div><div>In this case the mapper takes in either type, which you may or may not want.</div><div><br></div><div>//----------------------------------------------------------------------------</div>
<div>
int vtkCompositePolyDataMapper2::FillInputPortInformation(</div><div> int vtkNotUsed(port), vtkInformation* info)</div><div>{</div><div> info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkPolyData");</div>
<div> info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkCompositeDataSet");</div><div> return 1;</div><div>}</div><div><br></div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>
Clifton Park, NY 12065-8662<br>Phone: <a href="tel:518-881-4909" value="+15188814909" target="_blank">518-881-4909</a><br>
<br><br><div>On Fri, Jan 20, 2012 at 2:36 PM, Sohail Shafii <span dir="ltr"><<a rel="nofollow" href="mailto:sohailshafii@yahoo.com" target="_blank">sohailshafii@yahoo.com</a>></span> wrote:<br><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:12pt;font-family:arial,helvetica,sans-serif"><div>Hi,</div><div><br></div><div>I am developing an algorithm that requires a composite data set as input while creating a vtkDataSet as output -- basically it inherit from vtkDataSetAlgorithm. I know that one must provide a new definition to the FillInputPortInformation(int port, vtkInformation *info) function, but I'm not sure how. Please advise, thank you.</div>
<span><font color="#888888"><div><br></div><div>Sohail</div></font></span></div></div><br>_______________________________________________<br>
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