You haven't described what you are trying to get with the command that doesn't work. My guess is that this might be what you want:
plot( x, MyData$NWorth, type="l" ) lines( x, MyData$NWorthSm) However, you might also have to calculate and supply a for the ylim argument to plot(). -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 Lab cell 925-724-7509 On 12/18/18, 6:17 AM, "R-help on behalf of rsherry8" <r-help-boun...@r-project.org on behalf of rsher...@comcast.net> wrote: Please consider the following R statements: > x = seq(1:1632) > length( MyData$NWorth ) [1] 1632 > length( MyData$NWorthSm ) [1] 1632 > plot( x, MyData$NWorth, type="l" ) > plot( x, MyData$NWorthSm, type="l" ) > plot( x, MyData$NWorth, MyData$NWorthSm, type="l" ) All of the above statements work except for the last one. The last one produces the following message: Error in plot.window(...) : invalid 'xlim' value So I then tired this: > xlim1 = c(0, 5000) >plot( x, MyData$NWorth, MyData$NWorthSm, type="l", xlim = xlim1 ) Which produced the following error message: Error in plot.window(...) : invalid 'ylim' value So, I tired this: > ylim1 = c(0,9000) > plot( x, MyData$NWorth, MyData$NWorthSm, type="l", xlim = xlim1, ylim = ylim1 ) Which produced the following error message: Error in strsplit(log, NULL) : non-character argument I would like to know what I am doing wrong. Thank you, Bob ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.