[R] Plot two values on same axes

[Rich Shepard]

On Fri, 27 Sep 2019, David Winsemius wrote:

> Instead of trying to mix lattice and base functions, you might try using
> the formula:
>
> maxtemp+mintemp ~ sampdate
>
> And then: col= c(“red”, “blue”)

David,

I certainly will. I've not needed R for projects for many months and when I
looked through previous scripts and the lattice book I failed to find what I
needed. So what I tried was a solution to a different but similar issue on
stackexchange.

Many thanks,

Rich