R nrow()
Published Oct 7, 2022
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The nrow() function returns the number of rows in a data frame.
Syntax
nrow(df_object)
The df_object parameter is the data frame passed into the nrow() function.
Example
The following example uses a CSV file named supplies.csv with the following information:
| Item | Quantity Needed | Price |
|---|---|---|
| Brooms | 15 | 8.5 |
| Bucket | 3 | 4 |
| Cloth | 6 | 2 |
| Duster | 10 | 5.5 |
| Mop | 5 | 10 |
The data within the file can be read in with the read.csv() function and the nrow() function can be used to retrieve the number of rows:
# Read filedf <- read.csv("supplies.csv")# Retrieve number of rowsnrow(df)
This results in the following output:
5
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