Perhaps what you do should depend on what you want to see. If all the lines lie near one another that says one thing. If all but one or two "agree" but the mavericks are in obvious disagreement, then that begs to ask "why?" If the entire lot looks like spaghetti, then that is informative also. So plotting all on one grid isn't of itself bad. That depends on what you are trying to do.
Charles Annis, P.E. charles.an...@statisticalengineering.com phone: 561-352-9699 eFax: 614-455-3265 http://www.StatisticalEngineering.com -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Katharina May Sent: Wednesday, June 24, 2009 5:05 PM To: r-help@r-project.org Subject: Re: [R] distinguish regression lines in grouped,black and white lattice xyplot That's a point. I justed wanted to provide an overview for myself to see the tendencies in a direct comparement and with an easy way to distinct them, but maybe the text panel can help me with that... Well anyway, is it right that a grouped black and white plot can contain a maxinum of 8 distinguishable lines or might there be a way to increase that? I know some graphics from papers containing lines with equally distance points on the lines (one type of point per line) as a form of distinction. Can this be realised using grouped lattice plots with regression lines? 2009/6/24 Bert Gunter <gunter.ber...@gene.com>: > Don't be silly. They can't be made "distinguishable" by any number of line > types and/or colors. The brain can't keep that many different symbol > representations straight. Referring back and forth to a legend is also > similarly useless. You need to think more creatively about how to make a > more meaningful display to provide viewers interpretable information. > > Bert Gunter > Genentech Nonclinical Biostatistics > > > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Katharina May > Sent: Wednesday, June 24, 2009 12:28 PM > To: r-help@r-project.org > Subject: [R] distinguish regression lines in grouped,black and white lattice > xyplot > > Hi, > > I've got the following problem which I cannot think of a solution right now: > > if got a lattice xyplot in black and white and a grouping variable > with many (more than 8 > values) and I plot it as regression lines (type="r"), just like this > one (not reproducable but that's > I guess not the point here): > > xyplot(log(AGWB) ~ log(BM_roots), data=sub_agwb_data, groups=species, > type="r", lty=c(1:6),panel=allo.panel.5) > > The problem is that I've got 26 different values for the grouping > variable species and only 6 default values for the line type > lty (and according to the par {graphics} help page customizable to up > to 8 different line types). > > Does anybody have any idea how these 26 different lines can be made > distinguishable from each other without the use > of colors? > > Thanks, > > Katharina > > ______________________________________________ > 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. > > -- Time flies like an arrow, fruit flies like bananas. ______________________________________________ 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.
