QML Graphs using dynamic data (from C++)

grinqt

I am trying to use QtGraphs to display an area chart of elevation data from a cycling trip. I have the data ready in C++ and am looking for a way to expose it to QML. I have been scouring the Qt docs for an explanation but every example seems to use the XYPoint classes with static data like the following:

// Code that works but uses static data
GraphsView {
    height: 500
    width: parent.width
    axisX: ValueAxis {
        max: 3
    }
    axisY: ValueAxis {
        max: 3
    }
    AreaSeries
    {
        color: "blue"
        upperSeries: LineSeries {
            XYPoint { x: 0.5; y: 0.5 }
            XYPoint { x: 1; y: 1 }
            XYPoint { x: 2; y: 2 }
            XYPoint { x: 2.5; y: 1.5 }
        }
    }
}

I would ideally like to do something like this instead:

// Code that does not work but uses dynamic data instead
GraphsView {
    height: 500
    width: parent.width
    axisX: ValueAxis {
        max: 3
    }
    axisY: ValueAxis {
        max: 3
    }
    AreaSeries
    {
        color: "blue"
        upperSeries: elevationData
    }
}

...where elevationData is something like a QVariantMap or QStringList from C++ side. This way, if elevationData changes, the graph will change. Any ideas?

GrecKo

Use a XYModelMapper in combination of a QAbstractItemModel.