How can I call the "wind direction" to show on the screen?

1

Hello everybody,
I want to customize the qground-control screen, and want to read the wind-direction(degree) (in qml file) for show the wind-direction by the picture of Arrow on the screen (compass widget).
I try to read the wind-direction by use this command “vehicle.wind.direction”, but the output is only “zero” all the time.
How can I call the wind-direction in the correct way.
Anyone please help me!
Thank you in advance.
Kongimi.

2

You want vehicle.wind.direction.value. Also not sure where you are getting vehicle from but make sure you really have a vehicle in the property.

3

Thank you for your advice, I will try in this afternoon.

4

@DonLakeFlyer , I try to modify source code as your advice, but it still “zero” value, and have no errors.
The property vehicle was defined, and can use normally by property _heading.

Here is the some source code (can’t read wind direction)

property real _heading: vehicle ? vehicle.heading.rawValue : 0
roperty real _windDirection: vehicle ? vehicle.wind.direction.value : 0

Image {
id: windDirection
source: “/res/wind-direction.svg”
visible: true
width: size * 0.5
sourceSize.width: width
fillMode: Image.PreserveAspectFit
anchors.centerIn: parent
transform: Rotation {
origin.x: windDirection.width / 2
origin.y: windDirection.height / 2
angle: _windDirection-90-_heading
}
}

Are you have other advices?

5

Is there actually a value in the property. Add it to the instrument panel to see.