cetesb_retrieve_param: Download list of observation from CETESB QUALAR

In quishqa/qualR: An R package to download São Paulo and Rio de Janeiro air pollution data

Download list of observation from CETESB QUALAR

Description

This function downloads the parameters in a vector. These parameters can be both pollutants or meteorological observations for one air quality station (AQS). It will pad out the date with missing data with NA. This function requires to have an account in CETESB QUALAR.

Usage

cetesb_retrieve_param(
  username,
  password,
  parameters,
  aqs_code,
  start_date,
  end_date,
  verbose = TRUE,
  to_csv = FALSE,
  csv_path = ""
)

Arguments

username	User name of CETESB QUALAR
password	User name's password of CETESB QUALAR
parameters	a character vector with the parameters abbreviations to download
aqs_code	Code of AQS
start_date	Date to start downloading in dd/mm/yyyy
end_date	Date to end downloading in dd/mm/yyyy
verbose	Print query summary
to_csv	Creates a csv file. FALSE by default
csv_path	Path to save the csv file

Value

data.frame with parameters described in params vector

Examples

## Not run: 
# Download ozone, nitrogen dioxide, and wind speed
# from Pinheiros AQS, from January first to 7th of 2020

my_user_name <- "John Doe"
my_pass_word <- "drowssap"
pin_code <- 99 # Check with cetesb_aqs
start_date <- "01/01/2020"
end_date <- "07/01/2020"
params <- c("o3","NOX", "VV")

pin_param <- cetesb_retrieve_param(my_user_name, my_pass_word,
                                   params, pin_code,
                                   start_date, end_date)

## End(Not run)

quishqa/qualR documentation built on June 10, 2025, 7:28 p.m.