> warnings() 1: In if ((data[pa, k] == df[, j]) & (data[ch, k] == i)) { ... : the condition has length>1 ,and only the first element is used
I add & between the two conditions..it solve the problem. But , it gives a >> false result. >> >> Best Regards >> > > > [[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.