removing column from a df with their column names in r

To remove a column from a data frame in R, you can use the dplyr package from the tidyverse. Here's an example of how to remove a column named column_name from a data frame called df:

main.r
library(dplyr)

df <- df %>% 
  select(-column_name)
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This code uses the select() function to remove the specified column from the data frame. The - sign indicates that we want to remove the column. Note that this code does not modify the original data frame, but rather creates a new data frame with the specified column removed. If you want to modify the original data frame, you can assign the result back to the original object (as shown above).