R Programming: Reorder an given data frame by column name
R Programming: Data frame Exercise-18 with Solution
Write a R program to reorder an given data frame by column name.
Sample Solution:
R Programming Code:
exam_data = data.frame(
name = c('Anastasia', 'Dima', 'Katherine', 'James', 'Emily', 'Michael', 'Matthew', 'Laura', 'Kevin', 'Jonas'),
score = c(12.5, 9, 16.5, 12, 9, 20, 14.5, 13.5, 8, 19),
attempts = c(1, 3, 2, 3, 2, 3, 1, 1, 2, 1),
qualify = c('yes', 'no', 'yes', 'no', 'no', 'yes', 'yes', 'no', 'no', 'yes')
)
print("Original dataframe:")
print(exam_data)
print("Reorder by column name:")
exam_data = exam_data[c("name", "attempts", "score", "qualify")]
print(exam_data)
Sample Output:
[1] "Original dataframe:" name score attempts qualify 1 Anastasia 12.5 1 yes 2 Dima 9.0 3 no 3 Katherine 16.5 2 yes 4 James 12.0 3 no 5 Emily 9.0 2 no 6 Michael 20.0 3 yes 7 Matthew 14.5 1 yes 8 Laura 13.5 1 no 9 Kevin 8.0 2 no 10 Jonas 19.0 1 yes [1] "Reorder by column name:" name attempts score qualify 1 Anastasia 1 12.5 yes 2 Dima 3 9.0 no 3 Katherine 2 16.5 yes 4 James 3 12.0 no 5 Emily 2 9.0 no 6 Michael 3 20.0 yes 7 Matthew 1 14.5 yes 8 Laura 1 13.5 no 9 Kevin 2 8.0 no 10 Jonas 1 19.0 yes
R Programming Code Editor:
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Previous: Write a R program to select some random rows from a given data frame.
Next: Write a R program to compare two data frames to find the elements in first data frame that are not present in second data frame.
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