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Add a few new WeatherHelper functions #1941

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merged 3 commits into from
Oct 7, 2022

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pgrawehr
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@pgrawehr pgrawehr commented Oct 2, 2022

This PR adds some new functions to the WeatherHelper class.

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@ghost ghost added the area-device-bindings Device Bindings for audio, sensor, motor, and display hardware that can used with System.Device.Gpio label Oct 2, 2022
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@Ellerbach Ellerbach left a comment

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Looks good to me!

src/devices/Common/Iot/Device/Common/WeatherHelper.cs Outdated Show resolved Hide resolved
Improve comments, add constants
if (windSpeed < Speed.FromKilometersPerHour(1))
{
// otherwise, the result is unusable, because the second and third terms of the equation are 0, resulting in a constant offset from the input temperature
windSpeed = Speed.FromKilometersPerHour(1);
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@krwq krwq Oct 6, 2022

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would it make sense to just return temperature here instead? (might make function non-continous, you might want to check math)

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No, because if the wind speed is low, the returned temperature is above the input temperature. This is expected and explained in the documentation. Only if the wind speed is zero or almost zero, the formula gets completely off. So this condition basically limits the output temperature to be at most about 2 degrees over the input temperature.

@pgrawehr pgrawehr merged commit 08664fa into dotnet:main Oct 7, 2022
@pgrawehr pgrawehr deleted the NewWeatherFunctions branch October 7, 2022 06:57
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3 participants