I have a table. First column is a date, second column is an index and other columns contains some other values. I want to remove, for each date, the row with the smallest index (it is not necessarily 1).
ex: in the following table, I want to remove row 1 (2013-05-12 with index 2) and row 8 (2013-05-13 with index 1) day index values 1 2013-05-12 2 xxxx 2 2013-05-12 3 xxxx 3 2013-05-12 4 xxxx 4 2013-05-12 5 xxxx 5 2013-05-12 6 xxxx 6 2013-05-12 7 xxxx 7 2013-05-12 8 xxxx 8 2013-05-13 1 xxxx 9 2013-05-13 3 xxxx 10 2013-05-13 4 xxxx 11 2013-05-13 5 xxxx 12 2013-05-13 6 xxxx 13 2013-05-13 7 xxxx 14 2013-05-13 8 xxxx 15 2013-05-13 9 xxxx 16 2013-05-13 10 xxxx 17 2013-05-13 12 xxxx Thank you for your help ______________________________________________ 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.
