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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal">I’m having trouble debugging a pipeline that has a multiblockdataset as it’s source.<o:p></o:p></p>
<p class="MsoNormal">The dataset has a scalar pointdata set for which I’d like to compute the gradient of.<o:p></o:p></p>
<p class="MsoNormal">The issue is, whenever I instantiate a vtkGradientFilter I receive the following:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">ERROR: In D:\dev\research\VTK\VTK5.10.1\Filtering\vtkExecutive.cxx, line 756<o:p></o:p></p>
<p class="MsoNormal">vtkCompositeDataPipeline (0000000000434DC0): Algorithm vtkGradientFilter(00000000249501D0) returned failure for request: vtkInformation (000000002652FD20)<o:p></o:p></p>
<p class="MsoNormal"> Debug: Off<o:p></o:p></p>
<p class="MsoNormal"> Modified Time: 58525<o:p></o:p></p>
<p class="MsoNormal"> Reference Count: 1<o:p></o:p></p>
<p class="MsoNormal"> Registered Events: (none)<o:p></o:p></p>
<p class="MsoNormal"> Request: REQUEST_DATA_OBJECT<o:p></o:p></p>
<p class="MsoNormal"> ALGORITHM_AFTER_FORWARD: 1<o:p></o:p></p>
<p class="MsoNormal"> FORWARD_DIRECTION: 0<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This is before using it, only trying to create it. Any ideas on what could be wrong?<o:p></o:p></p>
<p class="MsoNormal">Here is my setup:<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">vtkMultiBlockDataSet multiblockDataSet = vtkModel.getRoot();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">String colorByScalar = "p";<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">vtkAssignAttribute scalarToCalculateGradient = new vtkAssignAttribute();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">scalarToCalculateGradient.SetExecutive(executive);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">scalarToCalculateGradient.SetInputConnection(multiblockDataSet.GetProducerPort());<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">scalarToCalculateGradient.Assign(colorByScalar, 0, 0);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">scalarToCalculateGradient.DebugOn();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">scalarToCalculateGradient.Update();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">// the gradient<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">vtkDataSetGradient gradient = new vtkDataSetGradient();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">//error window pops up!!!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black">Gerrick</span><o:p></o:p></p>
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