How can I iterate over a list containing a subset of the columns in my dataframe?
Example:
df columns = a,b,c,d,e
my_list <- c("a","b","c")
If I try:
for (i in my_list){
print(df$i)
}
I obtain as many NULL as there are values in my_list. I need to solve this problem in order to apply some changes to the dataframe columns present in my_list.
