Try this:

 rowsum(price, market)

On Sun, Nov 14, 2010 at 10:02 AM, lgpeco <pavic.olic@gmail.com> wrote:

>
> hy guys i have one question :)
>
> i have two vectors markets and price
>
> market <- c(1, 5, 7, 9, 9, 6, 5, 4, 4, 3, 1, 2, 1)
> price <- c(100, 20, 30, 10, 50, 23, 23, 33, 96, 6, 4, 38, 96)
> i would like sum prices: market 1: (100+4+96), market 2: (38),..., market
> 9:
> (10+50)
> ao i would like get this result: (200, 38, ..., 60)
> and i don't wanna use while, for loops... is there any other function to
> sum
> these :)
>
> tnx for helping ;)
> --
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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