[R] Extracting values from a list

[Henrique Dallazuanna]

Try this:

sapply(x, '[', 'p.value')

On Thu, Feb 18, 2010 at 5:21 PM, chipmaney <chipmaney at hotmail.com> wrote:
>
> I have run a kruskal.test() using the by() function, which returns a list of
> results like the following (subset of results):
>
> Herb.df$ID: 4-2
>       Kruskal-Wallis chi-squared = 18.93, df = 7, p-value = 0.00841
> --------------------------------------------------------------------
> Herb.df$ID: 44-1
>        Kruskal-Wallis chi-squared = 4.43, df = 6, p-value = 0.6187
>
>
> So then, how do extract a vector of p-values (i.e., result$p.value) for
> every element in the list?
>
>
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O