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Adding information about sample datasets in example

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This commit is contained in:
Abhishek Yenpure 2019-09-04 10:09:36 -06:00
parent fd23bb3c74
commit 8e27562cea
1 changed files with 12 additions and 5 deletions
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17
examples/temporal_advection/TemporalAdvection.cxx
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@ -26,9 +26,15 @@ int main(int argc, char** argv)
auto opts = vtkm::cont::InitializeOptions::DefaultAnyDevice;
auto config = vtkm::cont::Initialize(argc, argv, opts);
std::cout << "Temporal Advection Example" << std::endl;
std::cout << "Parameters are [options] <dataset slice 1> <time 1> "
<< "<dataset slice 2> <time 2> <num steps> <step size> <output dataset>" << std::endl;
// Sample data to use this example can be found in the data directory of the
// VTK-m repo in the location temporal_datasets.
// These example with these datasets can be used for this example as :
// ./Temporal_Advection DoubleGyre_0.vtk 0.0 DoubleGyre_5.vtk 5.0
// velocity 500 0.025 pathlines.vtk
std::cout << "Parameters are [options] "
<< "<dataset slice 1> <time 1> "
<< "<dataset slice 2> <time 2> "
<< "<field name> <num steps> <step size> <output dataset>" << std::endl;
if (argc < 7)
{
@ -36,7 +42,7 @@ int main(int argc, char** argv)
exit(EXIT_FAILURE);
}
std::string datasetName1, datasetName2, outputName;
std::string fieldName, datasetName1, datasetName2, outputName;
vtkm::FloatDefault time1, time2;
vtkm::Id numSteps;
@ -63,6 +69,7 @@ int main(int argc, char** argv)
// Instantiate the filter by providing necessary parameters.
// Necessary parameters are :
vtkm::filter::Pathline pathlineFilter;
pathlineFilter.SetActiveField("velocity");
// 1. The current and next time slice. The current time slice is passed
// through the parameter to the Execute method.
pathlineFilter.SetNextDataSet(ds2);
@ -82,7 +89,7 @@ int main(int argc, char** argv)
// The way to verify if the code produces correct streamlines
// is to do a visual test by using VisIt/ParaView to visualize
// the file written by this method.
vtkm::io::writer::VTKDataSetWriter writer("pathlines.vtk");
vtkm::io::writer::VTKDataSetWriter writer(outputName);
writer.WriteDataSet(output);
return 0;
}