It helps writing down these question, you are then getting much closer to an answer...
summary(as.integer(t3[,2]) == as.integer(t3[,4]) & as.integer(t3[,3]) == as.integer(t3[,5])) will compare two pairs of column pairs and give a count of flase and true rows... -B |-----Original Message----- |From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On |Behalf Of Bernd Jagla |Sent: Friday, November 30, 2007 10:25 PM |To: r-help@r-project.org |Subject: [R] compare strings | |Sorry for the question, but I really cannot find the right search terms to |find an answer.. | | | |I have a data frame with strings in some of the columns. | |I want to know all the rows where the strings in both columns are equal. | | | |How do I do this? | | | |Thanks, | | | |Bernd | | | [[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. ______________________________________________ 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.
