[R] Lag() and lag()

[lornyi]

besides

I use Lag(x,h) to plot the lagged ts graph, it is very usefful

but when doing the regression(arima, xreg=), i am really not sure if I
should use lag(x,-h) or Lag(x,h)

from online i see people use lag(x,-h), but i didnt believe that, bc I can't
plot the lagged graph using this function.

so i think i maybe should use Lag(x,h) as xreg





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