?subset ?split --- On Fri, 10/16/09, Joel Fürstenberg-Hägg <joel_furstenberg_h...@hotmail.com> wrote:
> From: Joel Fürstenberg-Hägg <joel_furstenberg_h...@hotmail.com> > Subject: [R] Division of data frame and deletion of values from column > To: r-help@r-project.org > Received: Friday, October 16, 2009, 12:16 PM > > Hi all, > > I guess this might be an easy question, but I've searched > multiple help pages without finding any answear... so now I > put my trust in you! > > I have a data frame (36 variables and 556 observations). > One column contains three factors, and I would like to > divide the data frame into three new ones, based on the > value of the factors, thereby having only one value for all > elements of the particular column in each of the data > frames. The reason is that I later will create plots and do > statistical analyzes on these data frames, and I don't want > those factors affecting the result. > ID Weight Age_days ... > 1 18 76.1 > 106 > 2 19 77.0 > 175 > 3 20 78.1 > 121 > 4 21 78.2 > 121 > 5 22 78.8 > 106 > 6 23 76.3 > 106 > . > . > . > > I also have another column containing several factors, of > which I would like to exclude one (get NA instead). > > ID Weight Age_days Value_ID ... > 1 18 76.1 > 106 high > 2 19 77.0 > 175 low > 3 20 78.1 > 121 middle > 4 21 78.2 > 121 high > 5 22 78.8 > 106 high > 6 23 76.3 > 106 > number <-- exclude > 7 24 76.9 > 175 low > . > . > . > > I really hope someone could help me, though you might think > it's too easy... > > Best regards, > > Joel > > > > > _________________________________________________________________ > Hitta kärleken nu i vår! > http://dejting.se.msn.com/channel/index.aspx?trackingid=1002952 > [[alternative HTML version deleted]] > > > -----Inline Attachment Follows----- > > ______________________________________________ > 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. > __________________________________________________________________ Ask a question on any topic and get answers from real people. Go to Yahoo! Answers and share wha ______________________________________________ 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.
