[R] Row count on criteria

[Rui Barradas]

Hello,

Try

colSums(apply(...etc...))

Hope this helps,

Rui Barradas

Em 01-06-2012 18:37, Filoche escreveu:
> Hi everyone.
>
> I would like to count number of row higher than 0 for each column in a
> dataframe.
>
> For instance, I was using something like:
>
> YY = replicate(5, rnorm(10))
> apply(YY,2,">",0)
>
> This give me a boolean matrix, but how to have the count of row with numbers
>> 0 by column?
> Thank in advance,
> Phil
>
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