I have this dataframe
a <- c("5", 7, 9, "11")
b <- c("-8", "-10", -3, -1)
c <- c(-4, -1, "-6", "3")
df <- data.frame(a,b,c)
a b c
1 5 -8 -4
2 7 -10 -1
3 9 -3 -6
4 11 -1 3
then I want the rows be ordered for the maximum net value in them, independently of the columns. I mean, I expect something like this:
a b c
4 11 -1 3
2 7 -10 -1
3 9 -3 -6
1 5 -8 -4
as you can see it was sorted because the first row has the value of 11, the second (-10), the third (9), the fourth (-8).
You can get rowwise maximum of absolute values and order it.
df[order(-do.call(pmax, abs(df))), ]
# a b c
#4 11 -1 3
#2 7 -10 -1
#3 9 -3 -6
#1 5 -8 -4