Hi David, All I got was the rather cryptic "DFP (iPad)" below your message. Whatever format you used for the data was blocked by the R-help mail server. Try this command in your R session: dput(test) and cut and paste the output into your email. That should do it. Jim On Tue, Sep 20, 2022 at 7:41 AM Parkhurst, David <parkhurs at indiana.edu> wrote:> > I just sent a subset of the data, with a dataframe called test. Can you see that? It may not have been approved by the moderator yet. > > DFP (iPad) > > > On Sep 19, 2022, at 5:29 PM, Jim Lemon <drjimlemon at gmail.com> wrote: > > > > ?Hi David, > > Since you used read.csv to get the data frame, the file must be i text > > format. If you can include a few lines of the input (with made up NO2 > > values if necessary), it would be easy to respond with the required > > commands and a plot. > > > > Jim > > > >> On Mon, Sep 19, 2022 at 9:12 PM Parkhurst, David <parkhurs at indiana.edu> wrote: > >> > >> I?ve been retired since ?06 and have forgotten most of R. Now I have a use for it, with some data from Bloomington?s Environmental Commission. > >> > >> I have a dataframe (obtained from read.csv) that contains numerous columns, including time (in Excel?s 18:00 format), and DNO2, and MNO2 from two air quality instruments. > >> > >> I?d like a plot of both the NO2 measurements against time. I be happy to use either ordinary R plots or ggplot2 ones, if that would be a better way. I?d much appreciate help. > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________________________ > >> R-help at 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.