windowed_segments() [2/2]

MAYAFLUX_API std::vector< std::vector< double > > MayaFlux::windowed_segments	(	const std::vector< double > &	data,
		size_t	window_size,
		size_t	hop_size
	)

Split single-channel data into overlapping windows.

Parameters

data	Input data
window_size	Size of each window
hop_size	Step size between windows

Returns

Vector of windowed segments

Definition at line 901 of file Yantra.cpp.

{
    auto extractor = std::make_shared<Yantra::FeatureExtractor<>>(window_size, hop_size,
        Yantra::ExtractionMethod::OVERLAPPING_WINDOWS);
    extractor->set_parameter("overlap", double(hop_size) / window_size);
 
    Yantra::IO<std::vector<Kakshya::DataVariant>> input { { Kakshya::DataVariant(data) } };
    auto result = extractor->apply_operation(input);
 
    auto extracted_data = result.data[0];
 
    std::vector<std::vector<double>> segments;
    for (size_t i = 0; i < extracted_data.size(); i += window_size) {
        size_t end_idx = std::min(i + window_size, extracted_data.size());
        segments.emplace_back(extracted_data.begin() + i, extracted_data.begin() + end_idx);
    }
 
    return segments;
}

References MayaFlux::Yantra::IO< T >::data, and MayaFlux::Yantra::OVERLAPPING_WINDOWS.

Referenced by windowed_segments_per_channel().

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