R help - Nov 2003 - first 3 minimums

Hello, 

I have a df with plots (60) and their distances to bores (20) and would like 
to compute the three minimum distances to bores of each plot. 

with 
>apply(df, 2, min) 
I get the overall min, but is there a way to get additionally to the first 
min, the second and third minimum distance?

thanks in advance, cheers Martin

On 11/01/03 14:05, Martin Wegmann wrote:
>Hello, 
>
>I have a df with plots (60) and their distances to bores (20) and would like
>to compute the three minimum distances to bores of each plot. 
>
>with 
>>apply(df, 2, min) 
>I get the overall min, but is there a way to get additionally to the first 
>min, the second and third minimum distance?
Something like:
apply(df,2,sort)[1:3,]
or
apply(df,2,sort)[,1:3]
or
apply(df,1,sort)[,1:3]
or
apply(df,1,sort)[1:3,]

I can't think through how your data are laid out, but I'm pretty
sure one of these will work.

Jon
-- 
Jonathan Baron, Professor of Psychology, University of Pennsylvania
Home page:            http://www.sas.upenn.edu/~baron
R page:               http://finzi.psych.upenn.edu/