Hi Hm. Does str(poli) revealed said explicitly that poli is data frame? I presume that it told you that it is list. In that case you need to use appropriate indexing, which suits structure of your list.
Regards r-help-boun...@r-project.org napsal dne 02.12.2010 22:06:15: > > Simplified version of str(poli): (real dataset includes 36 variables) > > $ country : chr [1:15846] "Afghanistan " "Afghanistan > " "Afghanistan " "Afghanistan " ... > $ year : num [1:15846] 1800 1801 1802 1803 1804 ... > $ democ : num [1:15846] 1 1 1 1 1 1 1 1 1 1 ... > $ autoc : num [1:15846] 7 7 7 7 7 7 7 7 7 7 ... > $ polity : num [1:15846] -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 ... > $ polity2 : num [1:15846] -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 ... > - attr(*, "label.table")=List of 36 > ..$ country : NULL > ..$ year : NULL > ..$ democ : NULL > ..$ autoc : NULL > ..$ polity : NULL > ..$ polity2 : NULL > > > > > ----- > Diogenas > -- > View this message in context: http://r.789695.n4.nabble.com/Filter-data- > tp3070069p3070201.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. ______________________________________________ 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.
