[pshaiCmd] Z-Score

Handy custom command for transforming any data series into more normalized type: Z-score

More information: https://www.investopedia.com/terms/z/zscore.asp

Example:

local close = ClosePrices()
local zscore = CC_Z_Score(close, 30, 10)
--
Plot(0, 'zscore', zscore, LineOptions(Red, Spiked, Solid, 1, 0, LeftAxis, '', true, false))
PlotHorizontalLine(0, 'z-zero', Gray, 0, Dashed, LeftAxis)
--
if CrossOver(zscore, 0) then
    PlotVerticalLine(0, '', Purple, Time(), Dashed)
elseif CrossUnder(zscore, 0) then
    PlotVerticalLine(0, '', Cyan, Time(), Dashed)
end