me.lag {metools} | R Documentation |
me.lag lag a vector if t>0 or lead a vector if t<0.
me.lag(x, t = 1, nafill = NA, extrapolate = FALSE)
x |
a vector |
t |
number of times to lag (default=1) |
nafill |
set value to fill NA's before first t value |
extrapolate |
if TRUE extrapolate excedent values, only if t>0 (default=FALSE) |
Return a vector.
v=c(3,2,5,6,5,4)
me.lag(v)
#now lead
me.lag(v,t=-1)