extractRadarPolar: Extract radar polar data.
In rijaf-iri/mtorwdata: Processing AWS and RADAR data from Meteo Rwanda

Extract radar polar data over a set of points.

extractRadarPolar(
  url,
  source,
  start_time,
  end_time,
  fields,
  points,
  sweeps = -1,
  pia = NULL,
  dbz_fields = NULL,
  filter = NULL,
  filter_fields = NULL,
  apply_cmd = FALSE,
  time_zone = "Africa/Kigali"
)

`url`	The URL of the server. Ex: "http://192.168.1.10:8080"
`source`	A partial path of the directory containing the folders dates of the mdv files. Ex: "radarPolar/derived/sur", "radarPolar/ops1/sur" or "radarPolar/ws/sur"
`start_time, end_time`	The start and end time same time zone as `time_zone`, format "YYYY-mm-dd HH:MM"
`fields`	Vector of the fields to extract.
`points`	A data frame of the points to extract. Data frame with column names "id", "longitude" and "latitude"
`sweeps`	A vector of the index of elevation angles to be extracted in integer, or -1 to extract all available elevation angles
`pia`	A named list of of the method and parameters to use to perform an attenuation correction for the reflectivity fields before extraction. Default `NULL`, no attenuation correction performed.
`dbz_fields`	A vector of reflectivity fields to correct the attenuation. Must be in `fields`. Default `NULL`
`filter`	A named list of the method and parameters to use to filter the fields before extraction. Default `NULL`, no filtering applied.
`filter_fields`	A vector of fields in which the filter will be applied. Must be in `fields`. Default `NULL`
`apply_cmd`	Logical, apply clutter mitigation decision to the fields. Default `FALSE`
`time_zone`	the time zone of `start_time`, `end_time` and the output QPE. Options: "Africa/Kigali" or "UTC". Default "Africa/Kigali"

A named list

points: the original points used to extract the data
date: list of dates of the extracted data
elevation_angle: list of the elevation angles of the extracted data
data: list of longitude, latitude, altitude and the fields in the form of 3d array.
Dimension: (length(date) x length(elevation_angle) x length(points))