[R] which is faster "for" or "apply"

[Berend Hasselman]

> On 31-12-2014, at 08:40, Karim Mezhoud <kmezhoud at gmail.com> wrote:
> 
> Hi All,
> I would like to choice between these two data frame convert. which is
> faster?
> 
>   for(i in 1:ncol(DataFrame)){
> 
>                    DataFrame[,i] <- as.numeric(DataFrame[,i])
>                }
> 
> 
> OR
> 
> DataFrame <- as.data.frame(apply(DataFrame,2 ,function(x) as.numeric(x)))
> 
> 

Try it and use system.time.

Berend

> Thanks
> Karim
>  Ô__
> c/ /'_;~~~~kmezhoud
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