| Histogram::Histogram1dTem<int>* Impala::Core::Feature::MakeHistogram | ( | const AnnotatedFeatureTable * | data, | |
| int | nrClasses, | |||
| bool * | filter | |||
| ) |
makes a historgram of the values found in the second column of data (the column with the 'class id') considering the filter.
Definition at line 52 of file MakeRandomTree.h.
References Impala::Core::Histogram::Histogram1dTem< ElemT >::AddWeight(), Impala::Core::Table::TableTem< Col1T, Col2T, Col3T, Col4T, Col5T, Col6T, Col7T, Col8T, Col9T >::Get2(), Impala::Core::Table::TableTem< Col1T, Col2T, Col3T, Col4T, Col5T, Col6T, Col7T, Col8T, Col9T >::GetInfo(), and Impala::Core::Table::Table::Size().
Referenced by Gain(), and Impala::Core::Feature::TestMakeRandomTree::testMakeHistogram().
00053 { 00054 int outLyers; 00055 Histogram::Histogram1dTem<int>* hist = 00056 new Histogram::Histogram1dTem<int>(-0.5, nrClasses+0.5, nrClasses, 00057 &outLyers); 00058 String a=data->GetInfo(); 00059 for(int y=0 ; y<data->Size() ; ++y) 00060 if(filter[y]) 00061 hist->AddWeight(data->Get2(y), 1.); 00062 return hist; 00063 }
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