Hello Petr Savicky, hello all, I have a situation similar to the previous one, I need to group a data.frame in a specific way,
col1 col2 score 2873 3192 319 4268 4451 183 5389 5534 145 6622 10622 4000 12631 17853 5222 20408 20615 207 21595 21838 243 23121 23139 18 the out put should be like, [1] 2873 3192 4268 4451 5389 5534 6622 10622 [2] 10622 12631 [3] 17853 20408 20615 21595 21838 23121 23139 Basically the split should be based on the DF$score > 500, and all the col1 and col2 values should be aggregated. but DF[i, "col2"] != DF[i+1, "col1"] Your inputs will be very helpful Thank you Karthick -- View this message in context: http://r.789695.n4.nabble.com/DF-grouping-tp4381310p4650865.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.