Read metadata of AQ e-Reporting — import_metadata

Read metadata from Air Quality e-Reporting by EEA member countries. See EEA website for the details on data and metadata.

Usage

import_metadata_EEA(
  obs_path = NULL,
  stations.type = NULL,
  stations.area = NULL,
  pollutant = NULL,
  date.begin = NULL,
  date.end = NULL
)

Arguments

obs_path: Path to metadata file.
stations.type: Optional character vector with stations type to be selected.
stations.area: Optional character vector with stations area to be selected.
pollutant: Optional integer or string to select pollutant.
date.begin: Optional beginning date-time (d/m/y H:M:S) to select active station
date.end: Optional ending date-time (d/m/y H:M:S) to select active station

Value

A data.table::data.table.

Details

If stations.type and/or stations.area are not specified all data in the database file are read. stations.type can contain any combination of station type (for ex. "background", "traffic" or "industrial"). stations.area can contain any combination of station area (for ex. "urban", "suburban", "rural-regional", "rural", "rural-nearcity").

If date.begin or date.end are provided, the stations are filtered by the ObservationDateBegin and ObservationDateEnd fields.

Duplicate values of station code and pollutant code are removed.

Examples

if (FALSE) { # \dontrun{
metadata <- import_meta_EEA("./European_metadata.csv", stations.area = c("urban"),
                            stations.type = c("traffic", "industrial"))
} # }