drop columns from dataframe r code example
Example 1: drop columns by index r
#drop columns by index
df <- mydata[ -c(1,3:4) ]
#drop columns by name
df = subset(mydata, select = -c(x,z))
Example 2: R drop columns
undesired <- c('mpg', 'cyl', 'hp')
mtcars <- mtcars %>%
select(-one_of(undesired))
Example 3: r drop column by name
R> subset(df, select=-c(z,u))
x y
1 1 2
2 2 3
3 3 4
4 4 5
5 5 6