For each level of the factor in dotplot, I have time points I'd like to connect with a line. In the example below, 'x' represents a starting time and 'd' a duration, and I wish to connect 'x' to 'x+d'. Ordinarily I would use Dotplot from hmisc for this, but I have not been able to find a time class that Dotplot will allow. I can get lattice dotplot to put the points up, but I've not figured out how to connect them. Any suggestions?
require(lattice) z<-data.frame(y=factor(letters), x=structure(1:26,class=c("POSIXt","POSIXct"),tzone=""), d=runif(26)) # this puts the points, but does not connect them p<-dotplot(y~x+I(x+d), data=z, scales=list(x=list(format="%M:%S")) ) zh<-z zh$x<-as.numeric(zh$x) require(hmisc) # this connects them, but at the expense of the time info ph<-Dotplot(y~Cbind(x,x,x+d), data=zh, pch=" ") Thanks, Ben ______________________________________________ R-help@stat.math.ethz.ch 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.