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| import Foundation | |
| import Vapor | |
| typealias MetNoHourlyVariable = VariableOrDerived<MetNoVariable, MetNoVariableDerived> | |
| struct MetNoReader: GenericReaderDerivedSimple, GenericReaderProtocol { | |
| let reader: GenericReaderCached<MetNoDomain, MetNoVariable> | |
| let options: GenericReaderOptions | |
| typealias Domain = MetNoDomain | |
| typealias Variable = MetNoVariable | |
| typealias Derived = MetNoVariableDerived | |
| public init?(domain: Domain, lat: Float, lon: Float, elevation: Float, mode: GridSelectionMode, options: GenericReaderOptions) throws { | |
| guard let reader = try GenericReader<Domain, Variable>(domain: domain, lat: lat, lon: lon, elevation: elevation, mode: mode) else { | |
| return nil | |
| } | |
| self.reader = GenericReaderCached(reader: reader) | |
| self.options = options | |
| } | |
| public init(domain: Domain, gridpoint: Int, options: GenericReaderOptions) throws { | |
| let reader = try GenericReader<Domain, Variable>(domain: domain, position: gridpoint) | |
| self.reader = GenericReaderCached(reader: reader) | |
| self.options = options | |
| } | |
| func prefetchData(derived: MetNoVariableDerived, time: TimerangeDtAndSettings) throws { | |
| switch derived { | |
| case .apparent_temperature: | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| try prefetchData(raw: .wind_speed_10m, time: time) | |
| try prefetchData(raw: .relative_humidity_2m, time: time) | |
| try prefetchData(raw: .shortwave_radiation, time: time) | |
| case .vapor_pressure_deficit, .vapour_pressure_deficit: | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| try prefetchData(raw: .relative_humidity_2m, time: time) | |
| case .et0_fao_evapotranspiration: | |
| try prefetchData(raw: .shortwave_radiation, time: time) | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| try prefetchData(raw: .relative_humidity_2m, time: time) | |
| try prefetchData(raw: .wind_speed_10m, time: time) | |
| case .surface_pressure: | |
| try prefetchData(raw: .pressure_msl, time: time) | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| case .terrestrial_radiation: | |
| break | |
| case .terrestrial_radiation_instant: | |
| break | |
| case .dewpoint_2m, .dew_point_2m: | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| try prefetchData(raw: .relative_humidity_2m, time: time) | |
| case .diffuse_radiation: | |
| fallthrough | |
| case .diffuse_radiation_instant: | |
| fallthrough | |
| case .direct_normal_irradiance: | |
| fallthrough | |
| case .direct_normal_irradiance_instant: | |
| fallthrough | |
| case .direct_radiation: | |
| fallthrough | |
| case .direct_radiation_instant: | |
| fallthrough | |
| case .global_tilted_irradiance, .global_tilted_irradiance_instant: | |
| fallthrough | |
| case .shortwave_radiation_instant: | |
| try prefetchData(raw: .shortwave_radiation, time: time) | |
| /*case .cloudcover_low: | |
| fallthrough | |
| case .cloudcover_mid: | |
| fallthrough | |
| case .cloudcover_high: | |
| try prefetchData(raw: .cloudcover, time: time)*/ | |
| case .snowfall: | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| try prefetchData(raw: .precipitation, time: time) | |
| case .weathercode, .weather_code: | |
| try prefetchData(raw: .cloud_cover, time: time) | |
| try prefetchData(variable: .derived(.snowfall), time: time) | |
| try prefetchData(raw: .precipitation, time: time) | |
| try prefetchData(raw: .wind_gusts_10m, time: time) | |
| case .is_day: | |
| break | |
| case .rain: | |
| try prefetchData(raw: .precipitation, time: time) | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| case .showers: | |
| try prefetchData(raw: .precipitation, time: time) | |
| case .wet_bulb_temperature_2m: | |
| try prefetchData(raw: .temperature_2m, time: time) | |
| try prefetchData(raw: .relative_humidity_2m, time: time) | |
| case .cloudcover: | |
| try prefetchData(raw: .cloud_cover, time: time) | |
| case .relativehumidity_2m: | |
| try prefetchData(raw: .relative_humidity_2m, time: time) | |
| case .windspeed_10m: | |
| try prefetchData(raw: .wind_speed_10m, time: time) | |
| case .winddirection_10m: | |
| try prefetchData(raw: .wind_direction_10m, time: time) | |
| case .windgusts_10m: | |
| try prefetchData(raw: .wind_gusts_10m, time: time) | |
| case .sunshine_duration: | |
| try prefetchData(derived: .direct_radiation, time: time) | |
| } | |
| } | |
| func get(derived: MetNoVariableDerived, time: TimerangeDtAndSettings) throws -> DataAndUnit { | |
| switch derived { | |
| case .apparent_temperature: | |
| let windspeed = try get(raw: .wind_speed_10m, time: time).data | |
| let temperature = try get(raw: .temperature_2m, time: time).data | |
| let relhum = try get(raw: .relative_humidity_2m, time: time).data | |
| let radiation = try get(raw: .shortwave_radiation, time: time).data | |
| return DataAndUnit(Meteorology.apparentTemperature(temperature_2m: temperature, relativehumidity_2m: relhum, windspeed_10m: windspeed, shortwave_radiation: radiation), .celsius) | |
| case .vapor_pressure_deficit, .vapour_pressure_deficit: | |
| let temperature = try get(raw: .temperature_2m, time: time).data | |
| let rh = try get(raw: .relative_humidity_2m, time: time).data | |
| let dewpoint = zip(temperature,rh).map(Meteorology.dewpoint) | |
| return DataAndUnit(zip(temperature,dewpoint).map(Meteorology.vaporPressureDeficit), .kilopascal) | |
| case .et0_fao_evapotranspiration: | |
| let exrad = Zensun.extraTerrestrialRadiationBackwards(latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| let swrad = try get(raw: .shortwave_radiation, time: time).data | |
| let temperature = try get(raw: .temperature_2m, time: time).data | |
| let windspeed = try get(raw: .wind_speed_10m, time: time).data | |
| let rh = try get(raw: .relative_humidity_2m, time: time).data | |
| let dewpoint = zip(temperature,rh).map(Meteorology.dewpoint) | |
| let et0 = swrad.indices.map { i in | |
| return Meteorology.et0Evapotranspiration(temperature2mCelsius: temperature[i], windspeed10mMeterPerSecond: windspeed[i], dewpointCelsius: dewpoint[i], shortwaveRadiationWatts: swrad[i], elevation: reader.targetElevation, extraTerrestrialRadiation: exrad[i], dtSeconds: 3600) | |
| } | |
| return DataAndUnit(et0, .millimetre) | |
| case .surface_pressure: | |
| let temperature = try get(raw: .temperature_2m, time: time).data | |
| let pressure = try get(raw: .pressure_msl, time: time) | |
| return DataAndUnit(Meteorology.surfacePressure(temperature: temperature, pressure: pressure.data, elevation: reader.targetElevation), pressure.unit) | |
| case .terrestrial_radiation: | |
| /// Use center averaged | |
| let solar = Zensun.extraTerrestrialRadiationBackwards(latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| return DataAndUnit(solar, .wattPerSquareMetre) | |
| case .terrestrial_radiation_instant: | |
| /// Use center averaged | |
| let solar = Zensun.extraTerrestrialRadiationInstant(latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| return DataAndUnit(solar, .wattPerSquareMetre) | |
| case .dewpoint_2m, .dew_point_2m: | |
| let temperature = try get(raw: .temperature_2m, time: time) | |
| let rh = try get(raw: .relative_humidity_2m, time: time) | |
| return DataAndUnit(zip(temperature.data, rh.data).map(Meteorology.dewpoint), temperature.unit) | |
| case .shortwave_radiation_instant: | |
| let sw = try get(raw: .shortwave_radiation, time: time) | |
| let factor = Zensun.backwardsAveragedToInstantFactor(time: time.time, latitude: reader.modelLat, longitude: reader.modelLon) | |
| return DataAndUnit(zip(sw.data, factor).map(*), sw.unit) | |
| case .direct_normal_irradiance: | |
| let dhi = try get(derived: .direct_radiation, time: time).data | |
| let dni = Zensun.calculateBackwardsDNI(directRadiation: dhi, latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| return DataAndUnit(dni, .wattPerSquareMetre) | |
| case .direct_normal_irradiance_instant: | |
| let direct = try get(derived: .direct_radiation, time: time) | |
| let dni = Zensun.calculateBackwardsDNI(directRadiation: direct.data, latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time, convertToInstant: true) | |
| return DataAndUnit(dni, direct.unit) | |
| case .diffuse_radiation: | |
| let swrad = try get(raw: .shortwave_radiation, time: time) | |
| let diffuse = Zensun.calculateDiffuseRadiationBackwards(shortwaveRadiation: swrad.data, latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| return DataAndUnit(diffuse, swrad.unit) | |
| case .direct_radiation: | |
| let swrad = try get(raw: .shortwave_radiation, time: time) | |
| let diffuse = Zensun.calculateDiffuseRadiationBackwards(shortwaveRadiation: swrad.data, latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| return DataAndUnit(zip(swrad.data, diffuse).map(-), swrad.unit) | |
| case .direct_radiation_instant: | |
| let direct = try get(derived: .direct_radiation, time: time) | |
| let factor = Zensun.backwardsAveragedToInstantFactor(time: time.time, latitude: reader.modelLat, longitude: reader.modelLon) | |
| return DataAndUnit(zip(direct.data, factor).map(*), direct.unit) | |
| case .diffuse_radiation_instant: | |
| let diff = try get(derived: .diffuse_radiation, time: time) | |
| let factor = Zensun.backwardsAveragedToInstantFactor(time: time.time, latitude: reader.modelLat, longitude: reader.modelLon) | |
| return DataAndUnit(zip(diff.data, factor).map(*), diff.unit) | |
| /*case .cloudcover_low: | |
| return try get(raw: .cloudcover, time: time) | |
| case .cloudcover_mid: | |
| return try get(raw: .cloudcover, time: time) | |
| case .cloudcover_high: | |
| return try get(raw: .cloudcover, time: time)*/ | |
| case .snowfall: | |
| let temperature = try get(raw: .temperature_2m, time: time) | |
| let precipitation = try get(raw: .precipitation, time: time) | |
| return DataAndUnit(zip(temperature.data, precipitation.data).map({ $1 * ($0 >= 0 ? 0 : 0.7) }), .centimetre) | |
| case .weathercode, .weather_code: | |
| let cloudcover = try get(raw: .cloud_cover, time: time).data | |
| let precipitation = try get(raw: .precipitation, time: time).data | |
| let snowfall = try get(derived: .snowfall, time: time).data | |
| let gusts = try get(raw: .wind_gusts_10m, time: time).data | |
| return DataAndUnit(WeatherCode.calculate( | |
| cloudcover: cloudcover, | |
| precipitation: precipitation, | |
| convectivePrecipitation: nil, | |
| snowfallCentimeters: snowfall, | |
| gusts: gusts, | |
| cape: nil, | |
| liftedIndex: nil, | |
| visibilityMeters: nil, | |
| categoricalFreezingRain: nil, | |
| modelDtSeconds: time.dtSeconds), .wmoCode | |
| ) | |
| case .is_day: | |
| return DataAndUnit(Zensun.calculateIsDay(timeRange: time.time, lat: reader.modelLat, lon: reader.modelLon), .dimensionlessInteger) | |
| case .rain: | |
| let temperature = try get(raw: .temperature_2m, time: time) | |
| let precipitation = try get(raw: .precipitation, time: time) | |
| return DataAndUnit(zip(temperature.data, precipitation.data).map({ $1 * ($0 >= 0 ? 1 : 0) }), precipitation.unit) | |
| case .showers: | |
| // always 0, but only if any data is available in precipitation. | |
| let precipitation = try get(raw: .precipitation, time: time) | |
| return DataAndUnit(precipitation.data.map({ min($0, 0) }), precipitation.unit) | |
| case .wet_bulb_temperature_2m: | |
| let temperature = try get(raw: .temperature_2m, time: time) | |
| let rh = try get(raw: .relative_humidity_2m, time: time) | |
| return DataAndUnit(zip(temperature.data, rh.data).map(Meteorology.wetBulbTemperature), temperature.unit) | |
| case .cloudcover: | |
| return try get(raw: .cloud_cover, time: time) | |
| case .relativehumidity_2m: | |
| return try get(raw: .relative_humidity_2m, time: time) | |
| case .windspeed_10m: | |
| return try get(raw: .wind_speed_10m, time: time) | |
| case .winddirection_10m: | |
| return try get(raw: .wind_direction_10m, time: time) | |
| case .windgusts_10m: | |
| return try get(raw: .wind_gusts_10m, time: time) | |
| case .sunshine_duration: | |
| let directRadiation = try get(derived: .direct_radiation, time: time) | |
| let duration = Zensun.calculateBackwardsSunshineDuration(directRadiation: directRadiation.data, latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time) | |
| return DataAndUnit(duration, .seconds) | |
| case .global_tilted_irradiance: | |
| let directRadiation = try get(derived: .direct_radiation, time: time).data | |
| let diffuseRadiation = try get(derived: .diffuse_radiation, time: time).data | |
| let gti = Zensun.calculateTiltedIrradiance(directRadiation: directRadiation, diffuseRadiation: diffuseRadiation, tilt: try options.getTilt(), azimuth: try options.getAzimuth(), latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time, convertBackwardsToInstant: false) | |
| return DataAndUnit(gti, .wattPerSquareMetre) | |
| case .global_tilted_irradiance_instant: | |
| let directRadiation = try get(derived: .direct_radiation, time: time).data | |
| let diffuseRadiation = try get(derived: .diffuse_radiation, time: time).data | |
| let gti = Zensun.calculateTiltedIrradiance(directRadiation: directRadiation, diffuseRadiation: diffuseRadiation, tilt: try options.getTilt(), azimuth: try options.getAzimuth(), latitude: reader.modelLat, longitude: reader.modelLon, timerange: time.time, convertBackwardsToInstant: true) | |
| return DataAndUnit(gti, .wattPerSquareMetre) | |
| } | |
| } | |
| } | |
| /// cloudcover low/mid/high and wind u/v components are requried to be used in the general forecast api | |
| enum MetNoVariableDerived: String, GenericVariableMixable { | |
| /*case cloudcover_low | |
| case cloudcover_mid | |
| case cloudcover_high*/ | |
| case apparent_temperature | |
| case dewpoint_2m | |
| case dew_point_2m | |
| case direct_normal_irradiance | |
| case direct_normal_irradiance_instant | |
| case direct_radiation | |
| case direct_radiation_instant | |
| case diffuse_radiation_instant | |
| case diffuse_radiation | |
| case shortwave_radiation_instant | |
| case et0_fao_evapotranspiration | |
| case vapour_pressure_deficit | |
| case vapor_pressure_deficit | |
| case surface_pressure | |
| case terrestrial_radiation | |
| case terrestrial_radiation_instant | |
| case global_tilted_irradiance | |
| case global_tilted_irradiance_instant | |
| case snowfall | |
| case weather_code | |
| case weathercode | |
| case is_day | |
| case rain | |
| case showers | |
| case wet_bulb_temperature_2m | |
| case cloudcover | |
| case relativehumidity_2m | |
| case windspeed_10m | |
| case winddirection_10m | |
| case windgusts_10m | |
| case sunshine_duration | |
| var requiresOffsetCorrectionForMixing: Bool { | |
| return false | |
| } | |
| } | |