Section 9 Read, Write and Save Data

9.1 A quick look

• Work with the data
  • Download the Microsoft Excel data file: iris.xlsx
  • Open the file in Microsoft Excel
  • Change the first record of Sepal.Length = 4.1
  • Save the data as a comma-separated csv file: “irisMod.csv”.
  • Go to Rstudio, read the csv file “irisMod.csv”
  • Check that R read the data with the edited record, i.e. the first record of Sepal.Length = 4.1
  • Change the first record of Sepal.Length to the correct value, i.e. Sepal.Length = 5.1
  • Save the data as a csv file: “iris.csv”
  • Also save the data as an R data object: “iris.RData”