Stefano,
I see you already have an answer that works for you.
Sometimes you want to step back and see if some modification makes a problem
easier to solve.
I often simply switch to using tools in the tidyverse such as dplyr for parts
of the job albeit much of the same can be done using functio
Sofia
Oggetto: Re: [R] aggregating data with quality control
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� Sat, 31 Aug 2024 11:15:10 +
Ste
Às 12:15 de 31/08/2024, Stefano Sofia escreveu:
Dear R-list users,
I deal with semi-hourly data from automatic meteorological stations.
They have to pass a manual validation; suppose that status = "C" stands for correct and
status = "D" for discarded.
Here a simple example with "Snow height"
В Sat, 31 Aug 2024 11:15:10 +
Stefano Sofia пишет:
> Evaluating the daily mean indipendently from the status is very easy:
>
> aggregate(mydf$hs, by=list(format(mydf$data_POSIX, "%Y"),
> format(mydf$data_POSIX, "%m"), format(mydf$data_POSIX, "%d")),
> my.mean)
>
>
> Things become more comp
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