Hi, I wish to combine two maps on a single plot so that I can draw lines that interact with each map. The maps are easily plotted side by side with par(mfrow=c(1,2) or layout(matrix(c(1,2,1,2),2,2,byrow=T), BUT I don't think there is a way to plot the lines that interact with each.
Here is the code that will give you the idea of what I want to do: library(maps) #layout(matrix(c(1,2,1,2),2,2,byrow=T)) #par(mfrow=c(1,2)) ##Map 1: State with counties that are the study region map("state","washington",fill=T,col="white",names=TRUE,plot=T) co=map("county",region=c("washington,chelan","washington,douglas","washington,okanogan","washington,grant"),col="gray",bg="gray",fill=T,plot=F) polygon(co$x,co$y,col="darkgray",border="darkgray") ##Map 2: The study region, large in order to plot some study sites from lat & long c2=map("county",region=c("washington,chelan","washington,douglas","washington,okanogan","washington,grant"),fill=T,col="white",names=TRUE,plot=F) So, I would like lines to go from the corners of the study region on the state (overview) map to the corners on the bigger detailed study regions on the second map, so it looks like it is popping out. This seems to require the two maps to be one single map unified by the coordinates, but clearly the state map covers a much broader lat and long range. Thanks for any ideas. -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/Map-duo-with-lines-connecting-them-tp5710206p5710206.html Sent from the R-sig-geo mailing list archive at Nabble.com. _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo