WindDirectionData
gives the most recent measurement for wind direction near the current location.
WindDirectionData[datespec]
gives the wind direction value for the specified time near the current location.
WindDirectionData[locationspec]
gives the most recent measurement for wind direction near the specified location.
WindDirectionData[locationspec,datespec]
gives the value or values for the specified date and location.
WindDirectionData[{{location1,date1},{location2,date2},…}]
gives values for all specified locations on the specified dates.
Details and Options
- WindDirectionData gives current and historical wind direction data for all standard weather stations worldwide.
- WindDirectionData[] makes use of $GeoLocation and $TimeZone to determine your location and time zone. It returns the most recent measurement of wind direction for the nearest high-reliability weather station to the location specified by $GeoLocation.
- The location can be specified as an ICAO code such as "KNYC", a WMO code such as "WMO12345", an amateur weather station code such as "C1234", or another standardized weather station identifier.
- The location can also be specified by latitude/longitude pairs, assuming degrees as units, a GeoPosition specification, or Entity objects, assuming they represent objects with geographic coordinates. They can also be GeoGraphics primitives such as GeoDisk, or a city specification of the type used in CityData. WindDirectionData gives measurements for the nearest high-reliability weather station to the location.
- locationspec can be either individual locations or lists of them.
- datespec can be specified as a date list, a string in DateString format, or as a DateObject.
- WindDirectionData[locationspec,datespec] by default takes datespec to be given in local time and uses UTC for all output times.
- When specific times are given, an interpolated result for that time is returned. datespec specifications for a day or longer period return the interval of wind direction measurements.
- datespec can be specified as {start,end,step} for compatibility with DateRange specifications. step can be All, "Day", "Week", "Month", or "Year". All gives all recorded observations. If omitted, step is assumed to have the value All.
- Location and date can also be specified together as Association["Location"->locationspec,"Date"datespec].
- WindDirectionData[locationspec,datespec,func] is used to specify the format of output when locations are specified.
- Possible settings for func include:
-
All return all values for extended locations and times Automatic return intervals for extended locations and indeterminate times Interval return intervals for extended locations and times Max return maximum values for extended locations and times Mean return mean value for extended locations and times Min return minumum values for extended locations and times StandardDeviation return standard deviation for extended locations and times "Stations" return all values along with their source weather station - Wind direction is returned in degrees as measured clockwise from the north.
- The option UnitSystem controls output units. The default value is set by $UnitSystem. The following settings can also be used:
-
"Imperial" return results in imperial units "Metric" return results in metric units - WindDirectionData[locationspec,"property"] returns the specified weather station property for the location corresponding to locationspec.
- Properties related to identifying weather stations include:
-
"Coordinates" weather station coordinates as a GeoPosition "Memberships" WMO, NCDC, and CWOP reporting network membership "NearestStation" the nearest weather station "StationDistance" distance in km between specified location and station given "StationName" weather station name - WindDirectionData can retrieve observational wind direction data from meteorological stations throughout the world.
Examples
open all close allBasic Examples (1)
Scope (19)
Location Specification (6)
The current wind direction measurement from a high-reliability station at the approximate coordinates of "KBOS":
Coordinates can be supplied for a location:
Entity objects can be used:
Obtain appropriate Entity using free-form input (
):
Discover the range of wind direction readings in a 180-degree arc to the west of Paris:
Find the wind direction measurement range across a geographic region:
To return the station from coordinates or a city name, use the "StationName" property:
Station Properties (3)
Date Specification (3)
Dates can be input using DateObject:
Dates can also be specified in DateList format:
Date ranges in the format {start,end} will return all data within that range:
Date specifications for a time period longer than an hour will return the Interval for the wind directions for that time period:
Lists of Locations (3)
Format Specification (2)
Find the wind direction for an extended location:
Obtain the maximum or minimum angle of the wind:
Use the setting Mean to obtain the average recorded wind direction:
Association Specification (2)
Date and location can be specified together using Association:
Association specification works with format arguments:
Options (1)
UnitSystem (1)
By default, results use the format given by $UnitSystem:
Set UnitSystem to adjust the units:
Applications (1)
Properties & Relations (2)
By default, location is specified by $GeoLocation:
Find all stations in a region with GeoEntities:
Text
Wolfram Research (2014), WindDirectionData, Wolfram Language function, https://reference.wolfram.com/language/ref/WindDirectionData.html.
CMS
Wolfram Language. 2014. "WindDirectionData." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/WindDirectionData.html.
APA
Wolfram Language. (2014). WindDirectionData. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/WindDirectionData.html