Here's an example: /id <- c(17,17,17,18,18,18,19,19,19,20,20,20,21,21,21,22,22,22,23,23,23,24, 24,24,25,25,25,26,26,26) age <- rep(c(30,36,42),10) outcome <- c(12,17,10,5,5,2,NA,NA,NA,8,6,5,11,13,10,15,11,15,13,NA,9,0,0,0,20, 14,16,1,2,2) mydata <- as.data.frame(cbind(id,age,outcome)) interaction.plot(mydata$age, mydata$id, mydata$outcome, fun = mean, legend = FALSE, lty = 1, xtick = TRUE, type = "l")/
How can I make the 'mean' summary line red and thicker? Thanks! -- View this message in context: http://r.789695.n4.nabble.com/Change-properties-of-line-summary-in-interaction-plot-tp3788614p3797044.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.