knitr::opts_chunk$set( collapse = TRUE, comment = "#>" )
To begin, we’ll load foqat
and show one dataset in foqat
:
aqi
is a dataset about time series of air quality with 1-second resolution.
library(foqat) head(aqi)
You can use dm8n()
to calculate daily maximum-8-hour ozone.
colid
is the column index of date.
colio
is the column index of ozone.
outputMode
have two options: value 1
will output 1 list which incudes
1 table (maximum-8-hour ozone); value 2
will output
1 list which contains 4 tables (8-hour ozone,
statistics of the number of effective hourly
concentrations in each 8-hour average concentration,
statistics of the number of effective 8-hour average
concentrations in each day, maximum-8-hour ozone).
This function will calculate the average values of other species at the same time and plot them.
dm8n_df = dm8n(aqi, colio=6, outputmode = 1)
If you do not want the plot or you want to save time, you can try dm8n_np()
dm8n_df = dm8n_np(aqi, colio=6, outputmode = 1) dm8n_df
dm8n_batch()
allows you to calculate daily maximum-8-hour ozone of multiple sites (or cities, or sensors), which means that it will calculate daily maximum-8-hour ozone for all columns except first column (date).
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