str()
The str() function displays the internal structure of an object such as an array, list, matrix, factor, or data frame.
Syntax
str(object)The object parameter is passed to the str() function to return a string representation that can be combined with other strings.
Example
The following example uses a CSV file named canines.csv with the following information in it:
| First Name | Last Name | Age | Breed |
|---|---|---|---|
| Max | Lancaster | 18 | Australian Sheperd |
| Bella | Stone | 4 | Yorkshire Terrier |
| Luna | Bae | 2 | Golden Retriever |
| Abe | Thompson | 10 | American Pit Bull Terrier |
| Teddy | Keagan | 6 | English Bull Dog |
The following example converts the data into a data frame and then uses the str() function on it:
# Read filedf <- read.csv("canines.csv")# Display internal structurestr(df)
This returns the following:
'data.frame': 5 obs. of 4 variables:$ First.Name: chr "Max" "Bella" "Luna" "Abe" ...$ Last.Name : chr "Lancaster" "Stone" "Bae" "Thompson" ...$ Age : int 18 4 2 10 6$ Breed : chr "Australian Sheperd" "Yorkshire Terrier""Golden Retriever" "American Pit Bull Terrier" ...
