SimTX API v24/Packets/WeatherMapRequest

WeatherMapRequest

Frame	{{{frame}}}, field {{{field}}}
Member	{{{member}}}
Direction	Client → server
Session	Control
Roles
Permission	None
Answered by	WeatherMapResponse
Answers
Defined in

WeatherMapRequest asks for a raster of the simulated tropospheric weather over an area. Tropospheric conditions, especially ducting, rain and cloud, affect VHF, UHF and microwave propagation. The server answers with WeatherMapResponse.

Layout

Field	Type	Description
packetId	u8	Always 8.
centerLatitudeDeg	f64	Centre latitude, −90 to 90.
centerLongitudeDeg	f64	Centre longitude, −180 to 180.
latitudeSpanDeg	f64	Height of the area in degrees, greater than 0 and at most 180.
longitudeSpanDeg	f64	Width of the area in degrees, greater than 0 and at most 360.
width	i32	Raster columns, 2–128.
height	i32	Raster rows, 2–64.
type	UTF	Quantity to map. See below.

Map types

type	Quantity	Unit
DUCT_STRENGTH	Strength of the strongest tropospheric duct (drop in modified refractivity); 0 where there is none	M-units
RAIN_RATE	Rain rate	mm/h
CLOUD_WATER	Cloud liquid water content	g/m³
SURFACE_TEMPERATURE	Air temperature at the surface	°C
LIGHTNING_RATE	Lightning flash rate	flashes/min

Behaviour

Heavy request, no permission needed. Invalid values close the connection.