This class acts as an interface to the metar service of weather.noaa.gov. It searches for locations given in ICAO notation and retrieves the current weather data.
Of course the parsing of the METAR-data has its limitations, as it follows the Federal Meteorological Handbook No.1 with modifications to accommodate for non-US reports, so if the report deviates from these standards, you won't get it parsed correctly. Anything that is not parsed, is saved in the "noparse" array-entry, returned by getWeather(), so you can do your own parsing afterwards. This limitation is specifically given for remarks, as the class is not processing everything mentioned there, but you will get the most common fields like precipitation and temperature-changes. Again, everything not parsed, goes into "noparse".
If you think, some important field is missing or not correctly parsed, please file a feature-request/bugreport at http://pear.php.net/ and be sure to provide the METAR report with a _detailed_ explanation!
For a working example, please take a look at docs/Services_Weather/examples/metar-basic.php
Services_Weather_Metar Inherited Methods
Table 67-1. Inherited from Services_Weather_Common
|Services_Weather_Common::calculateDewPoint()||Calculate dewpoint from temperature and humidity This is only an approximation, there is no exact formula, this one here is called Magnus-Formula|
|Services_Weather_Common::calculateHumidity()||Calculate humidity from temperature and dewpoint This is only an approximation, there is no exact formula, this one here is called Magnus-Formula|
|Services_Weather_Common::calculateWindChill()||Calculate windchill from temperature and windspeed (enhanced formula)|
|Services_Weather_Common::convertDistance()||Convert distance between km, ft and sm|
|Services_Weather_Common::convertPressure()||Convert pressure between in, hpa, mb, mm and atm|
|Services_Weather_Common::convertSpeed()||Convert speed between mph, kmh, kt, mps and fps|
|Services_Weather_Common::convertTemperature()||Convert temperature between f and c|
|Services_Weather_Common::getUnitsFormat()||Returns the selected units format|
|Services_Weather_Common::polar2cartesian()||Convert polar coordinates to cartesian coordinates|
|Services_Weather_Common::setCache()||Enables caching the data, usage strongly recommended|
|Services_Weather_Common::setDateTimeFormat()||Changes the representation of time and dates (see http://www.php.net/date)|
|Services_Weather_Common::setHttpTimeout()||Sets the timeout in seconds for HTTP requests|
|Services_Weather_Common::setUnitsFormat()||Changes the representation of the units (standard/metric)|