add column value based on row index r
# Assuming 'your_data' is your data frame and 'new_column_values' is a vector with values for the new column
your_data$new_column <- new_column_values
# Assuming 'your_data' is your data frame and 'new_column_values' is a vector with values for the new column
your_data$new_column <- new_column_values