Joshua,
There was mistake in my previous post, you should override
FillOutputInformation and set info->Set(vtkDataObject::DATA_TYPE_NAME(),
"vtkTable");
Sorry about that.
Burlen
On 04/09/2012 12:24 PM, Joshua Murphy wrote:
Hi Burlen,
I think I am getting there, but I am having the following problem now..
The following snippet from my RequestData is causing a segfault…
vtkInformation *outInfo2 = outputVector->GetInformationObject(1);
vtkTable *MetaDataOutput =
vtkTable::SafeDownCast(outInfo2->Get(vtkDataObject::DATA_OBJECT()));
Am I grabbing the information object incorrectly, or do I need to
override another method? Do I need to do something with
RequestDataObject()?
If you can help, that would be great!
-Josh
From: Burlen Loring <blor...@lbl.gov <mailto:blor...@lbl.gov>>
Date: Mon, 9 Apr 2012 12:34:02 -0600
To: Joshua Murphy <joshua.mur...@lasp.colorado.edu
<mailto:joshua.mur...@lasp.colorado.edu>>
Cc: burlen <burlen.lor...@gmail.com <mailto:burlen.lor...@gmail.com>>,
"paraview@paraview.org <mailto:paraview@paraview.org>"
<paraview@paraview.org <mailto:paraview@paraview.org>>
Subject: Re: [Paraview] Question on Information Objects
Hi Joshua,
In your constructor you'd need to call
this->SetNumberOfInputPorts(2);
You'd need to override
FillInputPortInformation(int port, vtkInformation *info)
implement a switch on port number and do something like:
288 switch (port)
289 {
290 // Vector feild data
291 case 0:
292 info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(),
"vtkUnstructuredGrid");
293 break;
294 // Seed points
295 case 1:
296 info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(),
"vtkTable");
297 break;
398 }
in request data you have to grab the table from the second information
object.
Hope this helps
Burlen
On 04/09/2012 11:01 AM, Joshua Murphy wrote:
Hello,
So I am trying to figure out how to add an output port to my Reader,
but I am having difficulty.
I am trying to create the new output as outlined in the email below,
but when I get to the point of adding the column to the table,
ParaView segfaults.
Having looked through other emails on the list, it looks like the
output ports need to be configured somehow, but I am not sure how to
do that.
My reader creates a vtkStructuredGrid for the data, and I need to add
the vtkTable for the meta-data… how do I configure the reader for
these two outputs?
Currently, my getInformation (beginning) looks like this:
------------
vtkInformation *outInfo = outputVector->GetInformationObject(0);
vtkStructuredGrid *output = vtkStructuredGrid::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
//TODO: Add Meta Data here first
// Use VTK Table output Port
// Following is from discussion on ParaView Mailing List
//-----------------------------------------------------------
// 315 vtkInformation *outInfo;
// 316 vtkTable *output;
// 317 vtkStringArray *data;
// 318
// 319 // output port 1 -> bw data
// 320 outInfo=outputVector->GetInformationObject(0);
// 321 output
// 322 = dynamic_cast<vtkTable*>(outInfo->Get(vtkDataObject::DATA_OBJECT()));
// 323 data=vtkStringArray::New();
// 324 data->SetName("BW Data");
// 325 data->SetNumberOfComponents(1);
// 326 data->InsertNextValue(bwData.c_str());
// 327 output->AddColumn(data);
// 328 data->Delete();
//----------------------------------------------------------
vtkTable *MetaDataOutput;
vtkStringArray *MetaString;
//output port for table data
MetaDataOutput = dynamic_cast<vtkTable*>(outInfo->Get(vtkDataObject::DATA_OBJECT()));
MetaString = vtkStringArray::New();
MetaString->SetName("Meta Data");
MetaString->InsertNextValue("This is a Test");
MetaString->InsertNextValue("This is Another Test");
//VVVVVVVVV This is making me crash! VVVVVVVVVVVV//
//----- Need another output port! How? -------//
MetaDataOutput->AddColumn(MetaString);
MetaString->Delete();
//structured grid below here....
vtkStructuredGrid *structOutput = vtkStructuredGrid::SafeDownCast(output);
--------------
The reader segfaults on MetaDataOutput->AddColumn(MetaString);
If someone could point me in the correct direction (or simply tell me
how stupid I am being!, and then point in the correct direction!) I
would be very grateful! I am sure I have a basic misunderstanding of
what is supposed to be happening here!
-Josh
From: burlen <burlen.lor...@gmail.com <mailto:burlen.lor...@gmail.com>>
Date: Thu, 22 Mar 2012 22:41:37 -0600
To: Joshua Murphy <joshua.mur...@lasp.colorado.edu
<mailto:joshua.mur...@lasp.colorado.edu>>
Cc: "paraview@paraview.org <mailto:paraview@paraview.org>"
<paraview@paraview.org <mailto:paraview@paraview.org>>
Subject: Re: [Paraview] Question on Information Objects
hi, information keys are more for passing info between filters
through the pipeline. if all you want is to display a string, you
could make a second output port to your reader that produces a
vtkTable and populate it with the string. This could be displayed in
the pv ui. here's a quick example of what you'd do in your request data:
315 vtkInformation *outInfo;
316 vtkTable *output;
317 vtkStringArray *data;
318
319 // output port 1 -> bw data
320 outInfo=outputVector->GetInformationObject(0);
321 output
322 =
dynamic_cast<vtkTable*>(outInfo->Get(vtkDataObject::DATA_OBJECT()));
323 data=vtkStringArray::New();
324 data->SetName("BW Data");
325 data->SetNumberOfComponents(1);
326 data->InsertNextValue(bwData.c_str());
327 output->AddColumn(data);
328 data->Delete();
On 03/22/2012 03:38 PM, Joshua Murphy wrote:
Hello,
I am trying to get meta-data information from a file into ParaView.
I have successfully built the information key-value pairs in the
information object in my reader, but I am uncertain how to get the
data out on the ParaView side of things.
Example:
I want to get the Calendar date meta-data from my model file. I
added Key to the information object to the results info object.
I set keys as follows:
request->AppendUnique(vtkExecutive::KEYS_TO_COPY(),
vtkENLILMetaDataKeys::REFDATE_CAL());
I have a function to add the value to the key like such:
void vtkENLILMetaDataKeys::populate_meta_data(vtkInformation* request,
vtkInformationStringKey *key, char* value)
{
request->Set(key, value);
}
I then add the values to the keys as follows:
vtkENLILMetaDataKeys::populate_meta_data(outInfo,
vtkENLILMetaDataKeys::REFDATE_CAL(), temp);
After I do this, I can successfully pull the placed data from the
information object from within the reader.
What I cannot figure out is how to access this object from within
Paraview.
My goal is to be able to include the calendar date (as text) in the
render view.
Can someone guide me in the correct direction on how to do this? I
am looking for possibly a python way of getting at this data.
Thanks,
Josh
_______________________________________________
Powered bywww.kitware.com
Visit other Kitware open-source projects
athttp://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki
at:http://paraview.org/Wiki/ParaView
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
_______________________________________________
Powered bywww.kitware.com
Visit other Kitware open-source projects
athttp://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki
at:http://paraview.org/Wiki/ParaView
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki at:
http://paraview.org/Wiki/ParaView
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
