How to use summarise method In R Language
The summarise method is used to create a summary of the values across the data rows that fall within one column. It is preferably used with a group_by method and the output data contains one row for each of the groups present in the column for which the group_by method is invoked. The method has the following syntax:
Syntax : Summarise(new-col-name=fun())
Arguments: fun – any aggregate function that may be applied over the rows
In the following code snippet, a new column sum is displayed which contains the submission of the values present in the col1 and col3 values of the data. The sum aggregate method has been used to calculate the total values.
R
# Computing the mean data %>% rowwise() %>% summarise(sum = sum(c(col1,col3))) |
Output:
Row wise operation in R using Dplyr
The dplyr package in R programming is used to perform simulations in the data by performing manipulations and transformations. It can be installed into the working space using the following command :
install.packages("dplyr")