ggwithinstats needs to have an argument to specify rowid

[IndrajeetPatil]

Currently, the function internally assumes that data is already sorted by identifier for repeated subjects design

# create data
# deliberately change the order of participant id
df <-
  tibble::tribble(
    ~time, ~rating, ~id,
    "before", 1, 1,
    "before", 2, 2,
    "before", 3, 3,
    "before", 4, 5,
    "before", 5, 4,
    "after", 5, 1,
    "after", 4, 2,
    "after", 3, 3, 
    "after", 2, 4,
    "after", 1, 5
  )

# data for id 4 from before is linked to data for id 5 in after
library(ggstatsplot)
ggwithinstats(df, time, rating)

^{Created on 2020-06-16 by the reprex package (v0.3.0)}

[IndrajeetPatil]

Closing in favor of #483