Thanks Burlen! `this->DebugOn()` helped me find the problems with my plugin reader.<div><br></div><div>Cheers,</div><div>Pete<br><br><div class="gmail_quote">On Tue, Nov 9, 2010 at 4:32 PM, burlen <span dir="ltr"><<a href="mailto:burlen.loring@gmail.com">burlen.loring@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi Peter,<br>
<br>
To use the vtkDebugMacro, do a "this->DebugOn()" in your constructor.<br>
<br>
You could just use cerr if you are Linux/mac and launch paraview/pvserver from a terminal. Doing a "output->Print(cerr);" at the end of request data would prove that you did what you think.<br>
<br>
You could use vtkErrorMacro to get stuff into PV 's window.<br>
<br>
Burlen<br>
<br>
<br>
Peter Schmitt wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div></div><div class="h5">
Hi ParaViewers,<br>
<br>
(Sorry if this double-posts!)<br>
<br>
I am writing a ParaView Reader Plugin to get my data into ParaView via a vtkStructuredGrid object. I can load my plugin into ParaView via "Manage Plugins". My file type shows up in the "File-> Open" dialog. When PV_PLUGIN_DEBUG is set, the "Output Messages" window shows that the library was loaded successfully.<br>
<br>
When I select a file and click "Apply" in the object inspector, Paraview thinks for a split second before returning to an interactive state. However, no data appears & the "Information" tab of the object inspector sets nCells = 0; nPoints = 0; Memory = 0 MB and the X,Y,Z extents are "NA".<br>
<br>
My plugin reader derives from "vtkStructuredGridReader" and implements:<br>
<br>
* SetFileName<br>
* GetFileName<br>
* CanReadFile * RequestInformation, where I set the extents via:<br>
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),extent,6);<br>
* RequestData, where I obtain a vtkStructuredGrid via:<br>
vtkStructuredGrid *output =<br>
vtkStructuredGrid::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));<br>
<br>
I am not sure why the "Information" tab is showing an empty structured grid. My questions are:<br>
<br>
1. How can I print debugging messages to stdout or Paraview's own "Output Messages" window? Specifically, I'd like to make sure that my X,Y,Z extents are being read properly from file. I tried vtkDebugMacro, but the data isn't being printed.<br>
<br>
2. Have I implemented the appropriate functions that derive from vtkStructuredGridReader? <br>
3. Should I derive instead from another class? When I derive from vtkStructuredGridAlgorithm, I get three error messages from vtkCompositeDataPipeline: "Input port 0 of algorithm vtkLFMReader(0x11f98a720) has 0 connections but is not optional".<br>
<br>
Can you offer any hints of how I can proceed to debug my reader?<br>
<br>
Thanks!<br>
Pete<br></div></div>
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