Re: [R] Finding pairs with least magnitude difference from mean

2011-03-01 Thread rex.dwyer
] On Behalf Of Hans W Borchers Sent: Monday, February 28, 2011 2:17 PM To: r-h...@stat.math.ethz.ch Subject: Re: [R] Finding pairs with least magnitude difference from mean rex.dwyer at syngenta.com writes: James, It seems the 2*mean(x) term is irrelevant if you are seeking to minimize sd

Re: [R] Finding pairs with least magnitude difference from mean

2011-02-28 Thread rex.dwyer
pairs with least magnitude difference from mean I have what I think is some kind of linear programming question. Basically, what I want to figure out is if I have a vector of numbers, x - rnorm(10) x [1] -0.44305959 -0.26707077 0.07121266 0.44123714 -1.10323616 -0.19712807 0.20679494

Re: [R] Finding pairs with least magnitude difference from mean

2011-02-28 Thread Hans W Borchers
rex.dwyer at syngenta.com writes: James, It seems the 2*mean(x) term is irrelevant if you are seeking to minimize sd. Then you want to sort the distances from smallest to largest. Then it seems clear that your five values will be adjacent in the list, since if you have a set of five

Re: [R] Finding pairs with least magnitude difference from mean

2011-02-26 Thread Hans W Borchers
I have what I think is some kind of linear programming question. Basically, what I want to figure out is if I have a vector of numbers, x - rnorm(10) x [1] -0.44305959 -0.26707077 0.07121266 0.44123714 -1.10323616 -0.19712807 0.20679494 -0.98629992 0.97191659 -0.77561593 mean(x)

[R] Finding pairs with least magnitude difference from mean

2011-02-25 Thread jctoll
Hi, I have what I think is some kind of linear programming question. Basically, what I want to figure out is if I have a vector of numbers, x - rnorm(10) x [1] -0.44305959 -0.26707077 0.07121266 0.44123714 -1.10323616 -0.19712807 0.20679494 -0.98629992 0.97191659 -0.77561593 mean(x)