Assigning column names
You’ve probably noticed that the hotdogs.txt file lacks column names, and R has assigned default, random names to the columns.
To make the data more understandable and easier to work with, you can assign appropriate column names while reading the file into R.
head(hotdogs)
V1 V2 V3
1 Beef 186 495
2 Beef 181 477
3 Beef 176 425
4 Beef 149 322
5 Beef 184 482
6 Beef 190 587
Cet exercice fait partie du cours
Introduction to Importing Data in R
Instructions
- Complete the
read.delim()function call by assigning the column names to "type", "calories", and "sodium".
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Finish the read.delim() call
hotdogs <- read.delim("hotdogs.txt", header = FALSE, col.names = ___)
# Print the first 6 rows of hotdogs
head(hotdogs)