131         return !sampleIdx.empty() ? (int)sampleIdx.total() :  in getNSamples()
160     Mat getTrainSampleIdx() const { return !trainSampleIdx.empty() ? trainSampleIdx : sampleIdx; }  in getTrainSampleIdx()
217         sampleIdx.release();  in clear()
242         sampleIdx = _sampleIdx.getMat();  in setData()
253         if( !sampleIdx.empty() )  in setData()
255             CV_Assert( (sampleIdx.checkVector(1, CV_32S, true) > 0 &&  in setData()
256                        checkRange(sampleIdx, true, 0, 0, nsamples-1)) ||  in setData()
257                        sampleIdx.checkVector(1, CV_8U, true) == nsamples );  in setData()
258             if( sampleIdx.type() == CV_8U )  in setData()
259                 sampleIdx = convertMaskToIdx(sampleIdx);  in setData()
759             trainSampleIdx = sampleIdx;  in setTrainTestSplit()
761             testSampleIdx = sampleIdx;  in setTrainTestSplit()
771             const int* sptr = !sampleIdx.empty() ? sampleIdx.ptr<int>() : 0;  in setTrainTestSplit()
826         if( (!compressSamples || (trainSampleIdx.empty() && sampleIdx.empty())) &&  in getTrainSamples()
967     Mat sampleIdx, trainSampleIdx, testSampleIdx;  member in cv::ml::TrainDataImpl
987                                  InputArray varIdx, InputArray sampleIdx, InputArray sampleWeights,  in create()  argument
991     td->setData(samples, layout, responses, varIdx, sampleIdx, sampleWeights, varType, noArray());  in create()