Hi: I'm trying to plot dates on the x-axis of a code, but the legend is not being displayed. I receive the following error:
Error in match.arg(x, c("bottomright", "bottom", "bottomleft", "left", : 'arg' should be one of bottomright, bottom, bottomleft, left, topleft, top, topright, right, center In addition: Warning message: longer object length is not a multiple of shorter object length in: arg == choices The problem is that I have more than one trend line, and the legend doesn't seem to work given that the x-axis is a date. I've searched prior help threads, but this issue hasn't come up. Any ideas? A sample code can be found below. date <- as.date(c("15-Jan-06","22-Jan-06","29-Jan-06","5-Feb-06","12-Feb-06","19-Feb- 06","26-Feb-06")) par(mfrow=c(2,1)) plot.date (date, int_median, main="Median Time to Receive Outcome Files, International and Domestic Centers Week", xlab="Week", ylim=c(15,35), ylab="Median Hours", type = "l",lwd =1, lty=1) lines (date, dom_median, type = "l", lwd = 2, lty=2) abline(h=24, lwd=2) name <- c("International", "Domestic") legend (c("29Jan6","5Feb6"),c(26,35), name, lwd=c(1,2), lty=c(1,2)) plot.date (date, int_mean, main="Mean Time to Receive Outcome Files, International and Domestic Centers Week", xlab="Week", ylim=c(15,35), ylab="Median Hours", type = "l",lwd =1, lty=1)lines (date, dom_mean, type = "l", lwd = 2, lty=2) abline(h=24, lwd=2) Thanks, Bryan L. Sykes Program Associate, Operations Research National Board of Medical Examiners [EMAIL PROTECTED] ______________________________________________ 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