Silvano, I have some examples using merge() from my class notes in http://www.leg.ufpr.br/doku.php/disciplinas:ce223-2011-01. See "aula11.R". For the moment, this minimal reproducible code can be useful
id <- 1:30 n <- 20 a1 <- data.frame(id=sample(id, n), v1=rnorm(n)) a2 <- data.frame(id=sample(id, n), v2=rpois(n,10)) a3 <- data.frame(id=sample(id, n), v3=runif(n)) merge(a1, a2, by="id") # just two data.frame at once a0 <- list(a1, a2, a3) Reduce(function(x, y) merge(x, y, by="id"), a0, accumulate=FALSE) # font: http://rwiki.sciviews.org/doku.php?id=tips:data-frames:merge You can also join to the R-br mailing list (brazilian R-help list). Instructions in http://www.leg.ufpr.br/doku.php/software:rbr Bests. Walmes. ========================================================================== Walmes Marques Zeviani LEG (Laboratório de Estatística e Geoinformação, 25.450418 S, 49.231759 W) Departamento de Estatística - Universidade Federal do Paraná fone: (+55) 41 3361 3573 VoIP: (3361 3600) 1053 1173 e-mail: wal...@ufpr.br twitter: @walmeszeviani homepage: http://www.leg.ufpr.br/~walmes linux user number: 531218 ========================================================================== [[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.
