Hello,
First time posting to this mail list.
I'd like to use R in the most efficient way. I'm accomplishing what I want,
but feel there is a more R'ish way to do it. Just learning R.
*My goal: get ranks of value across rows with row names and column names
intact.*
I'm guessing one of the [?]apply functions will do what I need, but I
couldn't sort out which one (after a lot of searching).
Here is a simplified example of what I am doing. Again, I get the correct
result, but I assume there is a better way to do it.
> x = data.frame(1:4,4)
> x
X1.4 X4
1 1 4
2 2 4
3 3 4
4 4 4
> ranks = matrix(0,nrow(x),ncol(x))
> ranks
[,1] [,2]
[1,] 0 0
[2,] 0 0
[3,] 0 0
[4,] 0 0
> for(i in 1:nrow(x)){
+ ranks[i,] = rank(x[i,])
+ }
> ranks[i,]
[1] 1.5 1.5
> ranks
[,1] [,2]
[1,] 1.0 2.0
[2,] 1.0 2.0
[3,] 1.0 2.0
[4,] 1.5 1.5
> rownames(ranks) = rownames(x)
> ranks
[,1] [,2]
1 1.0 2.0
2 1.0 2.0
3 1.0 2.0
4 1.5 1.5
> rownames(ranks) = rownames(x)
> ranks
[,1] [,2]
1 1.0 2.0
2 1.0 2.0
3 1.0 2.0
4 1.5 1.5
> colnames(ranks) = colnames(x)
> ranks
X1.4 X4
1 1.0 2.0
2 1.0 2.0
3 1.0 2.0
4 1.5 1.5
Thanks,
Ben
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