user4679594
Reputation:
Apply function across rows
Is there a more efficient way to do this?
I have a df with 4 rows and 25 columns, and I want to make a calculation across all rows with the following formula:
(df['next column'] - df['current column'])/df['current column']
Upvotes: 1
Views: 66
Answers (1)
akrun
Reputation: 886938
We can do
(df[-1] - df[-ncol(df)])/df[-ncol(df)]
data
set.seed(24)
df <- as.data.frame(matrix(1:25, 5, 5))
Upvotes: 1
Related Questions
- Apply function on rows across a column in a list
- apply a function across columns
- Apply a function to every row
- apply function to subsets of each row in R
- Apply function on multiple rows of matrix
- R applying a user-defined function to each row of a column
- apply function for every ith row and use columns as arguments
- Apply function on the rows of a matrix in R
- Applying function to multiple rows using values from multiple rows
- R - Apply function on every row, with data from the row