# S3 method for dtplyr_step head(x, n = 6L, ...) # S3 method for dtplyr_step tail(x, n = 6L, ...)
x | |
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n | Number of rows to select. Can use a negative number to instead drop rows from the other end. |
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library(dplyr, warn.conflicts = FALSE) dt <- lazy_dt(data.frame(x = 1:10)) # first three rows head(dt, 3)#> Source: local data table [3 x 1] #> Call: head(`_DT12`, n = 3) #> #> x #> <int> #> 1 1 #> 2 2 #> 3 3 #> #> # Use as.data.table()/as.data.frame()/as_tibble() to access results#> Source: local data table [3 x 1] #> Call: tail(`_DT12`, n = 3) #> #> x #> <int> #> 1 8 #> 2 9 #> 3 10 #> #> # Use as.data.table()/as.data.frame()/as_tibble() to access results#> Source: local data table [7 x 1] #> Call: tail(`_DT12`, n = -3) #> #> x #> <int> #> 1 4 #> 2 5 #> 3 6 #> 4 7 #> 5 8 #> 6 9 #> # … with 1 more row #> #> # Use as.data.table()/as.data.frame()/as_tibble() to access results