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FSX SimConnect_WeatherRequestObservationAtStation

AndyWoz

AndyWoz

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9
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unitedstates
I am trying to use the API mentioned in the title and am getting inconsistent results. It works sometimes, but very often I get no weather whatsoever, even for airports that are within 20NM radius of the aircraft position...

When I say I get no weather, I mean that SIMCONNECT_RECV_ID_WEATHER_OBSERVATION event never arrives. Is there a more reliable way of obtaining the weather? FSX must have some idea of the weather at fields that are just a few miles off of the aircraft path...

Thanks,
AW
 
JardY said:
To recept the weather from a station, the simulator have to know this station.
Click to expand...

Yes, I am not sure what you mean here, though. This is exactly what I am doing: supplying an existing station ID, known to the simulator, to SimConnect_WeatherRequestObservationAtStation(). The simulator fails to respond, which is my problem.

If you use a user-defined weather, you have to use the following ID : "GLOB".
Click to expand...

Again, I am not sure I understand you correctly. You seem to be saying that if user-defined weather is selected in the Sim, you have to use "GLOB"... But that gives you the global default weather. It tells you nothing about what happens at a particular station, which is what I am interested in.

What I am trying to do is to obtain a METAR for the departure, destination, and alternate airports, while the aircraft is still sitting at the gate at the departure airport, for example.

AW
 
From: http://msdn.microsoft.com/en-us/library/cc526983.aspx#SimConnect_WeatherRequestObservationAtStation

The exception SIMCONNECT_EXCEPTION_WEATHER_UNABLE_TO_GET_OBSERVATION is returned in a number of cases, including that the station provided as a parameter does not exist.

However there is one case where this exception is returned that a client should not treat as an error, and that is when the weather station does not have any valid data to return because it has not been recently updated with its current weather.

In this case a client could keep polling for a weather observation until a valid metar string is returned. This could take 10 seconds or more, as there are certain situations when a user can reset the weather through the UI that clears many of the weather stations of their current weather, and it takes some time for the weather engine to regenerate all the weather settings.
Click to expand...

Check the exception, and try the multiple polling :rolleyes:

Geoff
 
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