David has replied But I am wondering if the lattice function make.groups is what you want. As you seem to want extra panels. For the 3 graphs I get the 4 same panels NC W NE S and coloured points are added after foo but bar2 has more red points added bar1 and bar2 have the same colour for pch
I'm not upto date with some of the latticeExtra functions so cannot really comment otherwise. Duncan Duncan Mackay Department of Agronomy and Soil Science University of New England Armidale NSW 2351 Email: home: mac...@northnet.com.au -----Original Message----- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of sbihorel Sent: Friday, 31 July 2015 01:38 To: r-help@r-project.org Subject: [R] Using latticeExtra as.layer function with different number of plot panels Hi, When the as.layer function is used to overaly 2 lattice plots, there seems to be an assumption that the data used in both plots will generate the same number of panels (and, I believe, in the same order). In case the data used in the plot within the as.layer call is incomplete , data may be plotted on the "wrong" panel, and data seem to get re-used on the last panel(s). See what happens in the example code below when the records with state.region=="South" are dropped... Is there a trick to overlay panel based upon the conditioning variable value rather than the panel order? require(lattice) require(latticeExtra) state2 <- state <- data.frame(state.x77,state.region) state2$Income <- sample(state2$Income) state3 <- state2[which(state2$state.region!="South"),] foo <- xyplot(Income~Population|state.region,data=state,main='foo') foo bar <- update(foo,main='bar') + as.layer(xyplot(Income~Population|state.region,data=state2,col='red')) bar bar2 <- update(foo,main='bar2') + as.layer(xyplot(Income~Population|state.region,data=state3,col='red')) bar2 Thank you Sebastien PS: I know that I could get what I want by setting the Income variable to NA for records with state.region=="South" instead of dropping them... but this is not the point of my example. I am just trying to illustrate what happens when as.layer is used for plotting data with inconsistent dimensions. ______________________________________________ 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. ______________________________________________ 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.
