[R] how to get the miminum value in the list

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 19.06.2011 20:45:04:

> 
> Hi:
> 
> It's just an extra step:
> 
> y <- list(list(c(1,5),c(2,3,4)), list(c(1, 3, 4), c(5, 7)))
> lapply(seq_len(length(y)), function(i) lapply(y[[i]], min))
> [[1]]
> [[1]][[1]]
> [1] 1
> 
> [[1]][[2]]
> [1] 2
> 
> [[2]]
> [[2]][[1]]
> [1] 1
> 
> [[2]][[2]]
> [1] 5
> 
> unlist(lapply(seq_len(length(y)), function(i) lapply(y[[i]], min)))
> [1] 1 2 1 5

Or you can use rapply

rapply(y, min)
[1] 1 2 1 5

Regards

Petr

> 
> HTH,
> Dennis
> 
> On Sun, Jun 19, 2011 at 8:25 AM, jiliguala <jiliguala at mail.com> wrote:
> >
> > but in my case, the list is a two-variable list, list[[j]][[i]]
> >
> > when i use
> >
> > lapply(list, min)
> >
> > it appears
> > """Error in FUN(X[[1L]], ...) : invalid 'type' (list) of argument"""
> >
> > thanks
> >
> > --
> > View this message in context: 
http://r.789695.n4.nabble.com/how-to-get-
> the-miminum-value-in-the-list-tp3609013p3609433.html
> > Sent from the R help mailing list archive at Nabble.com.
> >
> > ______________________________________________
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> >
> 
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