如何将无界振荡器转换为0到100之间的有界振荡器？

Question

你知道如何在0到100之间把无限的振荡器变成有限的振荡器吗？

例如，如何绑定动量指示器

mom = close - close[10]
plot(mom, color=#2962FF, title="MOM")

Answer 1

您可以使用解释为normalize()的这里函数。

// ————— When the scale of the signal to rescale is unknown (unbounded).
// Min/Max of signal to rescale is determined by its historical low/high.
normalize(_src, _min, _max) =>
    // Normalizes series with unknown min/max using historical min/max.
    // _src      : series to rescale.
    // _min, _min: min/max values of rescaled series.
    var _historicMin =  10e10
    var _historicMax = -10e10
    _historicMin := min(nz(_src, _historicMin), _historicMin)
    _historicMax := max(nz(_src, _historicMax), _historicMax)
    _min + (_max - _min) * (_src - _historicMin) / max(_historicMax - _historicMin, 10e-10)