to be more general you can also use aggregate: aggregate(price,list(market),sum)
Henrique Dallazuanna wrote: > > Try this: > > rowsum(price, market) > > On Sun, Nov 14, 2010 at 10:02 AM, lgpeco <pavic.o...@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 ;) >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/sum-in-vector-tp3041661p3041661.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > > > -- > Henrique Dallazuanna > Curitiba-Paraná-Brasil > 25° 25' 40" S 49° 16' 22" O > > [[alternative HTML version deleted]] > > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- View this message in context: http://r.789695.n4.nabble.com/sum-in-vector-tp3041661p3041991.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
