overlapping_windows()

std::vector< double > MayaFlux::Kinesis::Discrete::overlapping_windows	(	std::span< const double >	data,
		uint32_t	window_size,
		double	overlap
	)

Extract overlapping windows as a flat concatenated vector.

Parameters

data	Source span
window_size	Samples per window
overlap	Overlap ratio in [0, 1)

Returns

Concatenated window data; empty if window_size == 0 or overlap >= 1

Definition at line 83 of file Extract.cpp.

{
    if (window_size == 0 || overlap < 0.0 || overlap >= 1.0 || data.size() < window_size)
        return {};
 
    const auto hop = std::max(1U, static_cast<uint32_t>(window_size * (1.0 - overlap)));
    std::vector<double> out;
    out.reserve(((data.size() - window_size) / hop + 1) * window_size);
 
    for (size_t start = 0; start + window_size <= data.size(); start += hop)
        out.insert(out.end(), data.begin() + start, data.begin() + start + window_size);
 
    return out;
}

References overlap.

Referenced by MayaFlux::Yantra::extract_overlapping_windows().

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