Option to choose from which temp sensor WCH is calculated

[HWTest]

I would like an option to choose from which temp sensor Wind Chill is calculated.
Now it is hard coded to use the "primary outdoor sensor" - seems to be the first temp sensor in RAW data after the thb sensor.
Sensor definition has no effect on this, ie if I define any other sensor as th0, it still uses the "primary outdoor sensor" for the the Wind Chill calculation.

[wfpost]

couldn´t that be achieved with defining a Virtual Sensor?

Only problem might be that the windchill formula is only valid for wind speeds larger than 5 km/h:
"Windchill Temperature is only defined for temperatures at or below 10 °C (50 °F) and wind speeds above 4.8 kilometres per hour (3.0 mph)."

http://en.wikipedia.org/wiki/Wind_chill

[HWTest]

couldn´t that be achieved with defining a Virtual Sensor?

Do you have an idea how?