Seth W Bigelow wrote:
Ok, thanks to Carl Witthoft I now know that to color spaces between and below a pair of lines in xyplot, I will need to redefine the lines as polygons, and use the lpolygon panel function, as in the followinglibrary(lattice) p <- c(1,10,10,1) # vector of x values q <- c(4,29.2,16,2.5) # vector of y values for upper polygon r <- c(2.5,16,0,0) # vector of y values for lower polygon xyplot( q + r ~ p, panel = lpolygon, col = c("red","green") ) But, having spent several hours arriving at this increment of knowlege, I find myself stumped at how to assign different colors to the two polygons! the above "col" line did not do the job.
Hi Seth, Maybe you could use the stackpoly function in the plotrix package: x<-matrix(x,nrow=10) y<-matrix(y,nrow=10) stackpoly(x,y,stack=TRUE) Jim ______________________________________________ [email protected] 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.
