Segments should do what you want. Try ?segments for help. Jim
James W. MacDonald Affymetrix and cDNA Microarray Core University of Michigan Cancer Center 1500 E. Medical Center Drive 7410 CCGC Ann Arbor MI 48109 734-647-5623 >>> "Carlos Rios" <[EMAIL PROTECTED]> 07/16/03 12:26PM >>> I was wondering if is there any way of plotting line segments on a plot. Actually I need a graph that shows the advantage of using a different method for estimate the parameter of my databse, so I've plotted the N estimatives for M areas in my database and then I've plotted the new estimation (N' estimatives) and I need a line to link those paired points (N'(1)-N(1), N'(2)-N(2)) vertically, for every area. I made a functions that draws points trougth the diference of N(*)'-N(*) put it consume alot of CPU and RAM... Better, is there any plot that does what I want to do? :) Thanks, Carlos Rios http://www.ence.ibge.gov.br/ ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help