Dear list, I'm looking for a way to select rows of a data.frame with changing number of columns (constraint) involved.
Assume a data (d) structure like Var.1 Var.2 Var.3 9 2 1 2 9 5 1 2 1 I know the number of involved columns. Is there a way to generate the following selection automatically (maybe for loop), so that it makes no difference if there are two or ten columns involved. Selection: d[d$Var.1==9 | d$Var.1==9 | d$Var.1==9 ,] Does anybody know a way? Thanks Mit freundlichen Grüßen Andreas Kunzler ____________________________ Bundeszahnärztekammer (BZÄK) Chausseestraße 13 10115 Berlin Tel.: 030 40005-113 Fax: 030 40005-119 E-Mail: a.kunz...@bzaek.de ______________________________________________ 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.
