Hi,<br><br>If you're using VTK master to create your VTR files you can use the SetHeaderTypeToUInt64() method to write out these large data sets. ParaView master will be able to read them in properly. Unfortunately though this has been fixed since the 3.14.1 release so it won't work there. We're working on fixing this limitation properly for the next ParaView release.<br>
<br>Andy<br><br><div class="gmail_quote">On Wed, Jul 25, 2012 at 3:47 AM, Paul McIntosh <span dir="ltr"><<a href="mailto:paul.mcintosh@internetscooter.com" target="_blank">paul.mcintosh@internetscooter.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All,<br>
<br>
How does one go about writing large rectilinear data files (vtr) that are<br>
suitable for reading by ParaView?<br>
<br>
I have been trying using VTK and found that there is a size limit(?).<br>
Googling showed that there was a bug in 2005 that should have been fixed but<br>
I am still getting an error when I go above a certain size (even with 3.14<br>
64bit precompiled). I have adapted a VTK example and reproduced the problem<br>
- below is the error message followed by the code. "size = 1000" works,<br>
"size = 1200" produced the error message, "size = 2000" ParaView just<br>
segfaults.<br>
<br>
Do I have to change it to use parallel writers?<br>
<br>
Cheers,<br>
<br>
Paul<br>
---<br>
<a href="http://www.internetscooter.com" target="_blank">www.internetscooter.com</a><br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLStructure<br>
dDataReader.cxx, line 325<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Error reading extent 0 1199 0 1199<br>
0 1199 from piece 0<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLDataReade<br>
r.cxx, line 510<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Cannot read point data array "Da"<br>
from PointData in piece 0. The data array in the element may be too short.<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLStructure<br>
dDataReader.cxx, line 325<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Error reading extent 0 1199 0 1199<br>
0 1199 from piece 0<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLDataReade<br>
r.cxx, line 510<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Cannot read point data array "Da"<br>
from PointData in piece 0. The data array in the element may be too short.<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLStructure<br>
dDataReader.cxx, line 325<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Error reading extent 0 1199 0 1199<br>
0 1199 from piece 0<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLDataReade<br>
r.cxx, line 510<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Cannot read point data array "Da"<br>
from PointData in piece 0. The data array in the element may be too short.<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLStructure<br>
dDataReader.cxx, line 325<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Error reading extent 0 1199 0 1199<br>
0 1199 from piece 0<br>
<br>
<br>
ERROR: In<br>
/usr/local/src/PARAVIEW/3.14.0/ParaView-3.14.0-Source/VTK/IO/vtkXMLDataReade<br>
r.cxx, line 510<br>
vtkXMLRectilinearGridReader (0x1b2b54b0): Cannot read point data array "Da"<br>
from PointData in piece 0. The data array in the element may be too short.<br>
<br>
// Qt (used for other code - not relevant here)<br>
#include <QCoreApplication><br>
#include <QtEndian><br>
#include <QDebug><br>
#include <QStringList><br>
<br>
// C++<br>
#include <list><br>
#include <iostream><br>
#include <fstream><br>
using namespace std;<br>
<br>
// VTK<br>
#include <vtkVersion.h><br>
#include <vtkSmartPointer.h><br>
#include <vtkDoubleArray.h><br>
#include <vtkFloatArray.h><br>
#include <vtkPointData.h><br>
#include <vtkCellData.h><br>
#include <vtkStructuredGrid.h><br>
#include <vtkRectilinearGrid.h><br>
#include <vtkXMLRectilinearGridWriter.h><br>
#include <vtkDataSetMapper.h><br>
#include <vtkXMLStructuredGridWriter.h><br>
#include <vtkXMLRectilinearGridReader.h><br>
#include <vtkSmartPointer.h><br>
#include <vtkProperty.h><br>
#include <vtkDataSetMapper.h><br>
#include <vtkXMLRectilinearGridReader.h><br>
#include <vtkRectilinearGridGeometryFilter.h><br>
#include <vtkRenderWindow.h><br>
#include <vtkRenderWindowInteractor.h><br>
#include <vtkRenderer.h><br>
<br>
#include <vtkDataSetMapper.h><br>
#include <vtkActor.h><br>
#include <vtkRenderWindow.h><br>
#include <vtkRenderer.h><br>
#include <vtkRenderWindowInteractor.h><br>
<br>
<br>
int main(int, char *[])<br>
{<br>
long int size = 1200;<br>
// Create a grid<br>
vtkSmartPointer<vtkRectilinearGrid> grid =<br>
vtkSmartPointer<vtkRectilinearGrid>::New();<br>
<br>
grid->SetDimensions(size,size,size);<br>
<br>
vtkSmartPointer<vtkDoubleArray> xArray =<br>
vtkSmartPointer<vtkDoubleArray>::New();<br>
xArray->SetNumberOfComponents(1);<br>
vtkSmartPointer<vtkDoubleArray> yArray =<br>
vtkSmartPointer<vtkDoubleArray>::New();<br>
yArray->SetNumberOfComponents(1);<br>
vtkSmartPointer<vtkDoubleArray> zArray =<br>
vtkSmartPointer<vtkDoubleArray>::New();<br>
zArray->SetNumberOfComponents(1);<br>
<br>
// Container for data<br>
vtkSmartPointer<vtkFloatArray> DaArray =<br>
vtkSmartPointer<vtkFloatArray>::New();<br>
DaArray->SetNumberOfComponents(1);<br>
DaArray->SetName("Da");<br>
<br>
for (long int i = 0; i < size; i++)<br>
{<br>
xArray->InsertNextValue(i);<br>
yArray->InsertNextValue(i);<br>
zArray->InsertNextValue(i);<br>
}<br>
<br>
grid->SetXCoordinates(xArray);<br>
grid->SetYCoordinates(yArray);<br>
grid->SetZCoordinates(zArray);<br>
<br>
for (long int i = 0; i < size*size*size; i++)<br>
{<br>
DaArray->InsertNextValue(i);<br>
}<br>
grid->GetPointData()->SetScalars(DaArray);<br>
<br>
std::cout << "There are " << grid->GetNumberOfPoints()<br>
<< " points." << std::endl;<br>
std::cout << "There are " << grid->GetNumberOfCells()<br>
<< " cells." << std::endl;<br>
<br>
vtkSmartPointer<vtkXMLRectilinearGridWriter> writer =<br>
vtkSmartPointer<vtkXMLRectilinearGridWriter>::New();<br>
//writer->SetFileName("rectilineargrid.vtr");<br>
writer->SetFileName("test.vtr");<br>
writer->SetInputConnection(grid->GetProducerPort());<br>
cout << "Writing " << "test.vtr" << "..." << endl;<br>
writer->Write();<br>
cout << "Wrote!" << endl;<br>
<br>
// Create a mapper and actor<br>
vtkSmartPointer<vtkDataSetMapper> mapper =<br>
vtkSmartPointer<vtkDataSetMapper>::New();<br>
mapper->SetInputConnection(grid->GetProducerPort());<br>
<br>
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();<br>
actor->SetMapper(mapper);<br>
<br>
// Visualize<br>
vtkSmartPointer<vtkRenderer> renderer =<br>
vtkSmartPointer<vtkRenderer>::New();<br>
vtkSmartPointer<vtkRenderWindow> renderWindow =<br>
vtkSmartPointer<vtkRenderWindow>::New();<br>
renderWindow->AddRenderer(renderer);<br>
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =<br>
vtkSmartPointer<vtkRenderWindowInteractor>::New();<br>
renderWindowInteractor->SetRenderWindow(renderWindow);<br>
<br>
renderer->AddActor(actor);<br>
renderer->SetBackground(.3, .6, .3); // Background color green<br>
<br>
renderWindow->Render();<br>
renderWindowInteractor->Start();<br>
<br>
return EXIT_SUCCESS;<br>
}<br>
<br>
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</blockquote></div><br>