I'm working with radial.plot in the plotrix package. Is there a way to show a shaded region for a specific range of values in radial.lim?
For example: # test data from radial.plot{plotrix} testlen<-c(sin(seq(0,1.98*pi,length=100))+2+rnorm(100)/10) testpos<-seq(0,1.98*pi,length=100) # the original plot radial.plot(testlen,testpos,rp.type="p",main="Test Polygon",line.col="blue") # my attempt to shade the region between 3 and 3.5: radial.plot( matrix(c(3.5, 3), byrow = TRUE), matrix(c(testpos, testpos), byrow = TRUE, nrow = 2), rp.type="p", main="Test Polygon", poly.col = c('light blue', 'white'), radial.lim = c(0, 3.5) ) # In effect, draw a polygon at 3.5 filled with light blue, then another at 3 filled with white. # Now overplot the values of interest: radial.plot(testlen,testpos,rp.type="p",main="Test Polygon",line.col="blue", radial.lim = c(0, 3.5), add = TRUE) Is there an easier way? How can I re-draw the grid lines that are in the original plot? Thanks, Steve . . . . . . . . . . . . . . . Steven M. Hodge Child and Adolescent Neurodevelopment Initiative S3-301 University of Massachusetts Medical School 55 Lake Avenue North Worcester, MA 01655 steven.ho...@umassmed.edu ______________________________________________ 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.