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 <parkh...@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@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.
