chronological_window()

template<typename T >

std::vector< T > MayaFlux::Kinesis::chronological_window ( const Memory::HistoryBuffer< T > &  history, size_t  window  )

inlinenoexcept

Copy the newest window samples out of a history buffer in chronological order.

Template Parameters

T	Sample type

Parameters

history	Buffer of samples, newest at index 0
window	Number of samples to take, minimum 2

Returns

Vector with the oldest of those samples first, newest last

The bridge from HistoryBuffer's and Differential's newest-first convention to the chronological order required by functions that compute signed, order-sensitive quantities (path shape, turning, trend) where reversing the input silently negates the answer rather than degrading it.

Definition at line 601 of file Differential.hpp.

{
    window = window < 2 ? 2 : window;
    std::vector<T> out;
    out.reserve(window);
    for (size_t i = window; i-- > 0;)
        out.push_back(history[i]);
    return out;
}

References out, and window.