There is a function called arrows() which is an .Internal function. How difficult is it to modify that function to return the xy coordinates for the line "segments" that make up the arrowhead?
Brandon Chasco University of Washington ph (206) 221-6768 ______________________________________________ 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.
