xprev: Return the nth previous element to each item in a vector
In HikaGenji/fql: Functional Query Language

1	xprev(l, k)

`l`	A vector
`k`	An integer, the number of shift in index to perform

A vector, lagged

JFP

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2
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  l <- 1:12
  l %>% xprev(-2)
  l %>% xprev(12)

HikaGenji/fql documentation built on April 12, 2021, 8:36 a.m.

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