grid.circle(r=0.3, gp=gpar(fill="gray80"), name="mycircle") grid.edit("mycircle", gp=gpar(lwd=5)) grid.edit("mycircle", gp=gpar(lty="dashed")) grid.rect(gp=gpar(col="gray")) grid.circle(r=0.3, gp=gpar(fill="gray80"), name="mycircle") grid.edit("mycircle", gp=gpar(lwd=5)) grid.edit("mycircle", gp=gpar(lty="dashed"))