I have a vector of dimension 67, but CircStat circ.summary and circ.disp seems to conclude that the dimension is 1. I am new to R so maybe I'm just missing something. > dim(data) [1] 67 1 > circ.mean(data) [1] 0.2200071 > circ.summary(data) n mean.dir rho 1 1 0.2200071 43.12534 > circ.disp(data) n r rbar var 1 1 43.12534 43.12534 -42.12534 > -- Robert Mark, Ph.D. rmark at infomagic.net Rupestrian CyberServices Phone/FAX 928-526-3625 3644 N. Stone Crest St. http://www.rupestrian.com/ Flagstaff, AZ 86004-6811 USA RCS: Computer science in the service of rock art research, protection, and education.