module BomRadarSites

BomRadarSites — Australian BOM weather radar catalog and nearest-site lookup. Public: SITES, nearest, find Depends: geo_lookup Tests: test/lib/bom_radar_sites_test.rb

Constants

SITES

Public Instance Methods

find (product_id)

Source

# File lib/bom_radar_sites.rb, line 147
def find(product_id)
  SITES.find { |site| site[:product_id] == product_id.to_s }
end

nearest (lat, lon)

Source

# File lib/bom_radar_sites.rb, line 151
def nearest(lat, lon)
  query = [lat.to_f, lon.to_f]
  covering = SITES.select do |site|
    GeoLookup.distance_km([site[:lat], site[:lon]], query) <= site[:range_km]
  end

  if covering.any?
    site = covering.min_by do |s|
      [GeoLookup.distance_km([s[:lat], s[:lon]], query), -s[:range_km], s[:product_id]]
    end
    return { site: site, edge: false }
  end

  site = SITES.min_by { |s| GeoLookup.distance_km([s[:lat], s[:lon]], query) }
  { site: site, edge: true }
end