Ah, so apparently you require some sort of psychic abilities... For how else would one choose which three values to keep in a row that was:
a 2 b 5 based on your specification that "xxx could be anything." Cheers, Bert Bert Gunter "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." -- Clifford Stoll On Thu, Jul 23, 2015 at 12:56 PM, maxbre <mbres...@arpa.veneto.it> wrote: > Hi > > thank you for your reply: it's a neat solution but unfortunately not > applicable to my specific case; > > in fact as I specified in my first post (I may have been not enough clear, > sorry for that!) I can not rely on any search method grep-like because the > value "xxx" in the rows of "df_start" can be anything (string or numeric and > always different) so that I necessarely need to apply by row index position > (i.e. in my reproducible example rows: 2, 3, 5); > > thank you again for your kind help but still searching for a solution... > > best > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/shift-by-one-column-given-rows-in-a-dataframe-tp4710256p4710271.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.
