ArrayRange
VTKExamples/Cxx/Utilities/ArrayRange
Code
ArrayRange.cxx
#include <vtkSmartPointer.h>
#include <vtkFloatArray.h>
#include <vtkIntArray.h>
int main(int, char *[])
{
/////////// Floats ///////////
{
vtkSmartPointer<vtkFloatArray> distances =
vtkSmartPointer<vtkFloatArray>::New();
distances->SetNumberOfComponents(1);
distances->SetName("Distances");
distances->InsertNextValue(5);
distances->InsertNextValue(15);
distances->InsertNextValue(25);
// Get min and max
double range[2];
distances->GetRange(range);
std::cout << "range = " << range[0] << " " << range[1] << std::endl;
}
/////////////// Ints //////////////
{
vtkSmartPointer<vtkIntArray> ints =
vtkSmartPointer<vtkIntArray>::New();
ints->SetNumberOfComponents(1);
ints->SetName("Ints");
ints->InsertNextValue(5);
ints->InsertNextValue(15);
ints->InsertNextValue(25);
// Get min and max
int valuesRange[2];
ints->GetValueRange(valuesRange); // Note this is not GetRange()!
std::cout << "valuesRange = " << valuesRange[0] << " " << valuesRange[1] << std::endl;
}
/////////// Range with negative values ///////////
{
vtkSmartPointer<vtkIntArray> ints =
vtkSmartPointer<vtkIntArray>::New();
ints->SetNumberOfComponents(1);
ints->SetName("Ints");
ints->InsertNextValue(-50);
ints->InsertNextValue(15);
ints->InsertNextValue(25);
// Get min and max
int valuesRange[2];
ints->GetValueRange(valuesRange); // Note this is not GetRange()!
std::cout << "valuesRange = " << valuesRange[0] << " " << valuesRange[1] << std::endl;
}
/////////// Magnitude range ///////////
{
vtkSmartPointer<vtkIntArray> ints =
vtkSmartPointer<vtkIntArray>::New();
ints->SetNumberOfComponents(1);
ints->SetName("Ints");
ints->InsertNextValue(-50);
ints->InsertNextValue(15);
ints->InsertNextValue(25);
// Get min and max
int valuesRange[2];
ints->GetValueRange(valuesRange, -1);
std::cout << "valuesRange = " << valuesRange[0] << " " << valuesRange[1] << std::endl;
}
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(ArrayRange)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(ArrayRange MACOSX_BUNDLE ArrayRange.cxx)
target_link_libraries(ArrayRange ${VTK_LIBRARIES})
Download and Build ArrayRange
Click here to download ArrayRange and its CMakeLists.txt file. Once the tarball ArrayRange.tar has been downloaded and extracted,
cd ArrayRange/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./ArrayRange
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.