[R] Subsetting Data

[Jonathan Daily]

Try this:

sum(dat$Number >= 10)

On Thu, Apr 28, 2011 at 3:13 PM, Abraham Mathew <abmathewks at gmail.com> wrote:
> I'm using the subset() function in R.
>
> dat <- data.frame(one=c(6,7,8,9,10), Number=c(5,15,13,1,13))
>
> subset(dat, Number >= 10)
>
> However, I want to find the number of all rows who meet the Number>=10
> condition.
>
> I've done this in the past with something like colSums or rowSums or another
> similar function.
> But I don't remember how to get the number of elements which meet that
> condition.
>
> function(subset(dat, Number >= 10))   #function is what i'm asking about
>
> In the above example, I'd run get 3 because there are 3 Number values
> greater than 10.
>
>
>> sessionInfo()
> R version 2.13.0 (2011-04-13)
> Platform: i686-pc-linux-gnu (32-bit)
>
>
> Help,
> Abraham
>
>        [[alternative HTML version deleted]]
>
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>



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Jon Daily
Technician
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