The rename() function in R is used to rename the columns of a data frame. The syntax for the rename() function is:
rename(data_frame, new_name = old_name, ...)
where `data_frame` is the name of the data frame, `new_name` is the new name of the column, and `old_name` is the old name of the column. The ellipsis (...) can be used to specify multiple column names to be renamed.
For example, the following code would rename the `dptp` column in the `chicago` data frame to `dewpoint`:
chicago <- rename(chicago, dewpoint = dptp)
The `head()` function is then used to print the first five rows of the `chicago` data frame, which shows that the `dptp` column has been renamed to `dewpoint`:
head(chicago[, 1:5], 3)
city tmpd dewpoint date pm25
1 chic 35 30.1 2005-12-31 15.00000
2 chic 36 31.0 2005-12-30 15.05714
3 chic 35 29.4 2005-12-29 7.45000
The rename() function is a very useful function for renaming columns in a data frame. It is much easier to use than the base R method for renaming columns, which requires you to manually change the values in the `names()` vector.
