df[1:2]<-df[1:2]*-1 ----- Lanna Jin
lanna...@gmail.com 510-898-8525 -- View this message in context: http://r.789695.n4.nabble.com/short-question-about-data-frame-manipulation-tp2076891p2076899.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.
