7.4 CSV Data Writing

Writing a dataset to a csv file is straightforward using readr::write_csv():

library(rattle)       # Dataset: weatherAUS.
library(dplyr)        # Wrangling: select().
library(readr)        # Modern and efficient data reader/writer.

ds <- weatherAUS

fname  <- "temperatureAUS.csv"

ds %>%
  select(Date, Location, MinTemp, MaxTemp, Temp9am, Temp3pm) %>%
  write_csv(fname)

To turn off the messaging of the identified columns, set the option for the number of columns to report to 0:

options(readr.num_columns=0)

To turn it back on, set it to NULL.

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