The skip argument
Another argument that can be very useful when reading in Excel files that are less tidy, is skip. With skip, you can tell R to ignore a specified number of rows inside the Excel sheets you're trying to pull data from. Have a look at this example:
read_excel("data.xlsx", skip = 15)
In this case, the first 15 rows in the first sheet of "data.xlsx" are ignored.
If the first row of this sheet contained the column names, this information will also be ignored by readxl. Make sure to set col_names to FALSE or manually specify column names in this case!
The file urbanpop.xlsx (view) is available in your directory; it has column names in the first rows.
Deze oefening maakt deel uit van de cursus
Introduction to Importing Data in R
Oefeninstructies
- Import the second sheet of
"urbanpop.xlsx", but skip the first 21 rows. Make sure to setcol_names = FALSE. Store the resulting data frame in a variableurbanpop_sel. - Select the first observation from
urbanpop_seland print it out.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Import the second sheet of urbanpop.xlsx, skipping the first 21 rows: urbanpop_sel
urbanpop_sel <- read_excel("urbanpop.xlsx", sheet = ___, col_names =___, skip = ___)
# Print out the first observation from urbanpop_sel
___