David - I didn't see a fun= argument to panel.loess Frank David Winsemius wrote > > On Jun 28, 2012, at 1:50 PM, Eiko Fried wrote: > >> Hello. >> >> I have 5 measurement points, my dependent variable is ordinal (0 - >> 3), and >> I want to visualize my data. I'm pretty new to R. >> What I want is to find out whether people with different baseline >> covariates have different trajectories, so I want a plot with the >> means >> trajectory of my dependent variable (the individual points do not >> make a >> lot of sense in ordinal data) on each measurement point per group, >> e.g. >> females vs. males. >> >> I found different codes, but they don't work well for me. This one >> looks >> promising, though: >> >>> xyplot(phq4 ~ time, data = data, type = 'l', >>> panel=function(...){ >>> panel.xyplot(...) > > If you do not want to plot the points then you should drop the call to > xyplot(...) > >>> panel.loess(...,fun=mean,horizontal=FALSE,col='red',lwd=3) >>> } >>> ) >> >> Works and gives me the mean trajectory (I think), but also the >> individual >> trajectories (so I'd like to get rid of them). Also, I would need a >> way to >> build 2 trajectories in 2 graphs ("group=gender" only gives 1 mean >> trajectory), + standard deviations or something similar that makes >> sense as >> a measure of variance. >> >> Thanks >> -T >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@ 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. > > David Winsemius, MD > West Hartford, CT > > ______________________________________________ > R-help@ 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. >
----- Frank Harrell Department of Biostatistics, Vanderbilt University -- View this message in context: http://r.789695.n4.nabble.com/Simple-mean-trajectory-ordinal-variable-tp4634801p4634878.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.