void findHistogram(IDataArray::Pointer inputData, int32_t* ensembleArray, int32_t* eIds, int NumberOfBins, bool removeBiasedFeatures, bool* biasedFeatures)
{
DataArray<T>* featureArray = DataArray<T>::SafePointerDownCast(inputData.get());
if (NULL == featureArray)
{
return;
}
T* fPtr = featureArray->getPointer(0);
size_t numfeatures = featureArray->getNumberOfTuples();
int32_t bin;
int32_t ensemble;
float min = 1000000.0f;
float max = 0.0f;
float value;
for (size_t i = 1; i < numfeatures; i++)
{
value = fPtr[i];
if(value > max) { max = value; }
if(value < min) { min = value; }
}
float stepsize = (max - min) / NumberOfBins;
for (size_t i = 1; i < numfeatures; i++)
{
if(removeBiasedFeatures == false || biasedFeatures[i] == false)
{
ensemble = eIds[i];
bin = (fPtr[i] - min) / stepsize;
if(bin >= NumberOfBins) { bin = NumberOfBins - 1; }
ensembleArray[(NumberOfBins * ensemble) + bin]++;
}
}
}
// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
void subtractVector3d(DataArray<double>::Pointer data, double* v)
{
size_t count = data->getNumberOfTuples();
for (size_t i = 0; i < count; ++i)
{
double* ptr = data->getPointer(i * 3);
ptr[0] = ptr[0] - v[0];
ptr[1] = ptr[1] - v[1];
ptr[2] = ptr[2] - v[2];
}
}