How to add column to dataframe r

- How to add new column to dataframe r
- How to add empty column to dataframe in r
- How to add column names to dataframe in r
- How to add column to existing dataframe in r
- Rstudio how to add column to dataframe
- How to add blank column to dataframe in r
- How to add column to dataframe from another dataframe in r
- How to add column to beginning of dataframe in r
- Add column to dataframe r with same value
- Add column to dataframe r dplyr
- Add column to dataframe r tidyverse
- Add column to dataframe row
- How to add column from one dataframe to another r
- Add column to dataframe r based on condition
- Add column to dataframe r mutate