Hi > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of e-letter > Sent: Monday, February 11, 2013 2:31 PM > To: r-help@r-project.org > Subject: Re: [R] convert 12 time stamp to 24 hour > > Readers, > > Have since tried to plot converted 24 hour data: > > testtimedataset > V1 > 1 13:01:41 > 2 13:02:10 > 3 13:02:38 > 4 13:03:05 > 5 13:03259 > > > testdata<-seq(1:5) > > plot(testdata~testtimedataset) > Error in function (formula, data = NULL, subset = NULL, na.action = > na.fail, : > invalid type (list) for variable 'testtimedataset' > > Was expecting to see a graph with ordinate values 1:5 for the time > series values on the abscissa. What is the mistake please?
The main mistake is that you did not pay attention to provided documentation especially R-intro. You try to plot a data frame against a vector testdata. We do not know, what is testtimedataset. You shall provide at least str(testtimedataset) or better dput(testtimedataset) Anyway, by plot(testdata~testtimedataset$V1) you will get rid of error message but depending on testtimedataset mode you can get different one. Regards Petr > > -- > r2151 > > ______________________________________________ > 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. ______________________________________________ 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.