Hello, plot(cox.zph(my.ph),var=1,xlab="Year")
gives the error: Error in plot.default(range(xx), yr, type = "n", xlab = "Time", ylab = ylab[i], : formal argument "xlab" matched by multiple actual arguments How can I customize the xlab and ylab for plots of cox.zph? Thanks, Dan Bebber Department of Plant Sciences University of Oxford UK ___________________________________________________________ How much free photo storage do you get? Store your holiday ______________________________________________ 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