[R] select maximum values

[arun]

Hi,
Try:
vec1 <- setNames(c(0.1,0.2, 0.5, 0.1,0.8, 0.4, 0.9), 1:7)
vec2 <- sort(vec1,decreasing=TRUE) 

names(vec2[seq(ceiling(length(vec2)*0.3))])
#[1] "7" "5" "3" 
A.K.

Hi, I need your help again. I have some data like this:
1      2        3       4      5        6       7      ...
0.1  0.2 0.5     0.1  0.8    0.4     0.9  ... I need to select the 30% higgest values,but in the ouitput I need the index (position where is the maximum values). In that case the output will be 7,5,3,... for example. Thank you