locationforecast: Weather forecast for a specified place

In weatherr: Tools for Handling and Scraping Instant Weather Forecast Feeds

Description

Obtaining weather forecasts from api.met.no Locationforecast service. Note that using this function you are agreeing to the Norwegian Meteorologisk Institutt conditions of service at http://api.met.no/conditions_service.html. Also, using the location query option you are agreeing to the Google Maps API Terms of Service at https://developers.google.com/maps/terms.

Usage

locationforecast(lat,lon,elevation=NULL,location=NULL,exact=TRUE,
tz=Sys.timezone(),key=NULL)

Arguments

lat, lon	numeric objects. latitude and longitude of a location in decimal degrees
elevation	optional numeric object. metres above sea level
location	optional character object. query latitude, longitude and elevation of the location using Google map service
exact	logical, indicating an exact time or an interval period forecasts
tz	time zone format. system time zone by default
key	Google API key

Details

If exact=FALSE, precipitation and temperature range can be obtained since these are computed as interval quantities.

Value

If exact=TRUE, A data frame is returned with the following quantities:

time	time of the forecasts
temperature	temperature (Celcius)
windDirection	wind direction (degree)
windSpeed_mps	wind speed (mps)
windSpeed_beaufort	wind speed (Beaufort scale)
windSpeed_name	wind speed category
windGust	gust (mps)
humidity	humidity (percentage)
pressure	atomospheric pressure (hPa)
cloudiness	clouds cover (percentage)
lowClouds	low clouds cover (percentage)
mediumClouds	medium clouds cover (percentage)
highClouds	high clouds cover (percentage)
dewpointTemperature	dewpoint temperature (Celcius)

If exact=FALSE, A data frame is returned with the following quantities:

timefrom	the start time of interval for the forecasts
timeto	the end time of interval for the forecasts
precipitation	precipitation amount (mm)
minTemperature	minimum temperature in the interval (Celcius)
maxTemperature	maximum temperature in the interval (Celcius)
weather_id	weather category

Author(s)

Stan Yip

Examples

## Not run: 
# Get exact time location forecast of Hong Kong
locationforecast(lat=22.39643,lon=114.1095)
# Get time interval location forecast of Malta
locationforecast(lat=35.9375,lon=14.37542,exact=FALSE)
# Get exact time location forecast of Cape Town, South Africa with timezone 'Africa/Johannesburg'
locationforecast(location='Cape Town, South Africa', tz='Africa/Johannesburg')

## End(Not run)

weatherr documentation built on July 9, 2020, 9:06 a.m.