tapply(price, market, sum) andydol...@gmail.com
On 14 November 2010 13:02, 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. > ______________________________________________ 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.
