I need to plot a prcomp object from package stats with custom symbols suitable for B&W publication. My boss specifically wants filled and unfilled square, triangle, circle, inverted triangle, diamond to represent 5 brain regions of 2 types of rat. Can I specify these as a parameter? Thanks, Mark Mark W. Kimpel MD ? Official Business Address: ? Department of Psychiatry Indiana University School of Medicine PR M116 Institute of Psychiatric Research 791 Union Drive Indianapolis, IN 46202 ? Preferred Mailing Address: ? 15032 Hunter Court Westfield, IN? 46074 ? (317) 490-5129 Work, & Mobile ? (317) 663-0513 Home (no voice mail please) 1-(317)-536-2730 FAX