Probably "or what." This demonstrates a fundamental conundrum: many users or prospective users of R have had little exposure to data structures in their formal education and therefore can be flummoxed by R's fussiness -- as any programming language must necessarily be. Consider: data frames, matrices, lists, "classes", objects with attributes (e.g. factors),...
Excel, which is basically structureless, of course, exacerbates the problem. Those accustomed to its tolerance (and the confusion that results) expect R to behave the same way. Education is the only recourse, either in formal courses or through R tutorials that strongly emphasize this aspect of interacting with R and especially writing effective code. But that demands effort and, to some extent, aptitude... both of which seem to be in increasingly short supply amidst the worldwide explosion in R's usage. Of course, feel free to disagree... Just my $.02 Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." Clifford Stoll On Tue, May 19, 2015 at 7:02 PM, John Kane <jrkrid...@inbox.com> wrote: > Is this a list of data.frames or what? > > Please have a look at one or both of these for some ideas of how to ask a > question and provide information on the problem. The better you can > describe what you have and what you need the better people can help. > > http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example > and http://adv-r.had.co.nz/Reproducibility.html > > > John Kane > Kingston ON Canada > > > > -----Original Message----- > > From: soe.xi...@gmail.com > > Sent: Tue, 19 May 2015 23:37:13 +0700 > > To: r-help@r-project.org > > Subject: [R] Count unchanged class attribute > > > > Maybe someone can help me. > > Suppose I have data-set like this: > > > > Netto Bruto class > > 1 10 1000 yes > > 2 100 20 yes > > > > > > Netto Bruto class > > 1 101 1000 yes > > 2 100 210 no > > > > > > Netto Bruto class > > 1 10 10 yes > > 2 12 28 yes > > 3 100 20 yes > > > > Netto Bruto class > > 1 120 200 no > > 2 400 20 yes > > > > > > Netto Bruto class > > 1 110 12000 yes > > 2 1100 120 yes > > 3 120 100 yes > > 4 1140 125 yes > > > > How to calculate the number of classes has changed. > > The expected result is > > - class changed 2 > > - class unchanged 3 > > > > > > Thank you so much. > > Soe Xiyan > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > 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. > > ____________________________________________________________ > Can't remember your password? Do you need a strong and secure password? > Use Password manager! It stores your passwords & protects your account. > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.