[R] Need help plotting

[Jim Lemon]

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 using 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.
>
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