What is tibble?
A tibble is a data frame-like structure in R. It contains rows and columns arranged in a tabular structure. It illustrates the data type of the data frame’s column. It can be created in R using the following dimensions :
tibble( col-1-name = values, col-2-name = values)
group_by()
To apply a function to every group in the data, we need to first group the data according to the classes available. The group_by() method in the dplyr package divides the data into different segments. It has the following syntax :
Syntax: group_by(col1, col2..)
Arguments :
- col1, col2,.. – The columns to group the data by
Apply a function to each group using Dplyr in R
In this article, we are going to learn how to apply a function to each group using dplyr in the R programming language.
The dplyr package in R is used for data manipulations and modifications. The package can be downloaded and installed into the working space using the following command :
install.packages("dplyr")