[R] Find tibble row with maximum recorded value

Rich Shepard
Fri, 03 Dec 2021 22:08:54 -0000

On Fri, 3 Dec 2021, Rich Shepard wrote:

> I find solutions when the data_frame is grouped, but none when it's
not.

Thanks, Bert. ?which.max confirmed that's all I need to find the maximum
value.

Now I need to read more than ?filter to learn why I'm not getting the
relevant row with:
> which.max(pdx_disc$cfs)
[1] 8054

> filter(pdx_disc, cfs == 8054)
# A tibble: 0 ? 9
# ? with 9 variables: site_nbr <chr>, year <int>, mon <int>,
day <int>,
#   hr <dbl>, min <dbl>, tz <chr>, cfs <dbl>, sampdt
<dttm>

Regards,

Rich