-------- Forwarded Message --------
Subject: Re: [Paraview] Fwd: Image Doesn't load correctly
Date: Tue, 05 May 2015 09:14:06 -0700
From: Burlen Loring <blor...@lbl.gov>
To: Dean, Kevin <kevin.d...@decisionsciencescorp.com>
ParaView should set it after it determines if the reader can read it.
Did you also implement CanReadFile? Maybe the problem is in that function.
On 05/05/2015 09:09 AM, Dean, Kevin wrote:
---------- Forwarded message ----------
From: *Dean, Kevin* <kevin.d...@decisionsciencescorp.com
<mailto:kevin.d...@decisionsciencescorp.com>>
Date: Mon, May 4, 2015 at 5:10 PM
Subject: Re: [Paraview] Image Doesn't load correctly
To: Burlen Loring <burlen.lor...@gmail.com
<mailto:burlen.lor...@gmail.com>>
awesome, thanks, that did it.
One more question. Is there a way to debug the FileName aspect of the
reader. I can't figure out how it's supposed to get set. The only way
I can get the image to show is by hard
coding it within the RequestData() function.
Thanks Again
Kevin E. Dean
On Mon, May 4, 2015 at 11:33 AM, Burlen Loring
<burlen.lor...@gmail.com <mailto:burlen.lor...@gmail.com>> wrote:
Hi Kevin.
Your RequestInformation looks a little bare. Unless things have
changed recently, you might need to set WHOLE_EXTENT, ORIGIN,
SPACING, CAN_PRODUCE_SUB_EXTENT keys there. and if you support
parallel IO honor the requested extent in RequestData.
Burlen
On 05/04/2015 09:52 AM, Dean, Kevin wrote:
So I am still having a few issues with the reader. I have checked
the output from the information Panel. And it seems as if all the
information is the same. So maybe the data is getting deleted
somehow (I'm not sure...., but here is a snippet of my code);
int vtkPVPROTOImageReader::RequestInformation (
vtkInformation*,
vtkInformationVector**,
vtkInformationVector* outputVector)
{
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkDataObject::SetPointDataActiveScalarInfo(outInfo,
VTK_UNSIGNED_CHAR, 1);
return 1;
}
int vtkPVPROTOImageReader::RequestData(vtkInformation
*vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
... conversion code from protobuf
/* Convert from protobuf to vtkImageData */
vtkSmartPointer<vtkImageData> image = "function converting to
protobuf";
vtkDataArray* scalars = image->GetPointData()->GetScalars();
scalars->SetName("ReconstructionData");
/* Get the info object */
vtkInformation *outInfo = outputVector->GetInformationObject(0);
outInfo->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkImageData");
/* Get the output */
vtkImageData* output = vtkImageData::GetData(outputVector);
// output->SetSpacing(image->GetSpacing());
// output->SetOrigin(image->GetOrigin());
// output->AllocateScalars(outInfo);
//
output->GetPointData()->SetScalars(image->GetPointData()->GetScalars());
// output->SetDimensions(image->GetDimensions());
output->ShallowCopy(image);
int* dimensions = output->GetDimensions();
std::cout << "\nNumber of points: " <<
output->GetNumberOfPoints() << std::endl;
std::cout << "Number of cells: " << output->GetNumberOfCells()
<< "\n" << std::endl;
// print out the pixel values to see if they are actually present
for (int z = 0; z < dimensions[2]; z++)
{
for (int y = 0; y < dimensions[1]; y++)
{
for (int x = 0; x < dimensions[0]; x++)
{
double* pixel =
static_cast<double*>(output->GetScalarPointer(x,y,z));
// do something with v
std::cout << "pixel value: " << pixel[0] << "\n";
}
std::cout << std::endl;
}
std::cout << std::endl;
}
// write output to file and compare in visualization window...
vtkSmartPointer<vtkXMLImageDataWriter> vtk_writer =
vtkSmartPointer<vtkXMLImageDataWriter>::New();
vtk_writer->SetInputData(output);
vtk_writer->SetFileName( "/home/kdean/tmp/foo.vti" );
vtk_writer->Update();
vtk_writer->Write();
return 1;
}
Another Problem I ran into:
So I had to hardcode a file for the char *FileName into the
RequestData Function in order to read any protobuf file. I ran a
debugger on the code, and it seems like these functions from the
header file (of the reader):
vtkGetStringMacro(FileName);
vtkSetStringMacro(FileName);
they are never getting called.
Thanks,
Kevin
here are my xml too... it looks right, but maybe I am missing
something.
On Sun, May 3, 2015 at 7:04 AM, Utkarsh Ayachit
<utkarsh.ayac...@kitware.com
<mailto:utkarsh.ayac...@kitware.com>> wrote:
You can also use the Information panel to see what arrays are
being
read in and what their ranges are.
On Sat, May 2, 2015 at 7:06 PM, Dean, Kevin
<kevin.d...@decisionsciencescorp.com
<mailto:kevin.d...@decisionsciencescorp.com>> wrote:
> looked at the spreadsheet view in the GUI, and it looks
like none of the
> Point Data is actually being copied...
>
> On Sat, May 2, 2015 at 3:44 PM, Dean, Kevin
> <kevin.d...@decisionsciencescorp.com
<mailto:kevin.d...@decisionsciencescorp.com>> wrote:
>>
>> What's up Utkarsh?
>>
>> So I was able to write that plugin and convert my image to the
>> vtkImageData. However, I am having trouble visualizing the
image. However,
>> when I write out the output from my reader, the image gets
written
>> correctly... Here are some pictures to show the
differences. (All the
>> information for the images is exactly the same) Do you
have an idea of how I
>> can try to fix it? Thanks.
>>
>> Kevin E. Dean
>
>
>
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http://paraview.org/Wiki/ParaView
Search the list archives at: http://markmail.org/search/?q=ParaView
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