01-basics.md

Mechanics

Select code then: Addins > Reprex selection

1 + 1

Same

reprex::reprex(1 + 1)

Same

reprex::reprex({
 1 + 1
})

• Prefer data that is small and built-in.
• Show the data so the reader can run it in their head.
• State what you expected and what you got instead.

data <- mtcars[1:3, 1:2]
data

# > Expected "Datsun 710" but got an error
filter(data, cyl < 6)

• Remember to use library(). Prefer to create data with code.
• Prefer to create the data with code.

library(dplyr)

# data <- mtcars[1:3, 1:2]
# datapasta::tribble_paste(data)
data <- tibble::tribble(
  ~mpg, ~cyl,
    21,    6,
    21,    6,
  22.8,    4
 )

# Yay! Now it works!
filter(data, cyl < 6)

• If you must use local data, then you need wd = "."
• You can share a link to your posit.cloud project including data.
• Prefer .tsv over .csv to avoid issues from different decimal points.

reprex::reprex(wd = ".", {
  data <- readr::read_tsv("data/data.tsv")
  filter(data, cyl < 6)
})

Links:

• Asking for a reprex is standard, e.g. see the issue template of dplyr.
• Learn more at repres do's and dont's