LightningChart Support Forums

Code: Select all

<lcusb:ViewXY.IntensityGridSeries>
    <lcusb:IntensityGridSeries
        x:Name="m_heatmap"
        Data="{Binding IntensityPoints}"
        ...
        />
</lcusb:ViewXY.IntensityGridSeries>

Code: Select all

private void MainWindow_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
    var vm = (MainWindowViewModel)this.DataContext;
    vm.UpdateChartInView = UpdateChart;

    //Call VM Method
    vm?.StartInVM();
}

//Call from VM
private void UpdateChart()
{
    m_chart.BeginUpdate();
    m_heatmap.InvalidateValuesDataOnly();
    m_chart.EndUpdate();
}

Code: Select all

private IntensityPoint[,] intensityPoints = null;
public IntensityPoint[,] IntensityPoints
{
    get { return intensityPoints; }
    set
    {
        intensityPoints = value;
        NotifyPropertyChanged();
    }
}
public Action UpdateChartInView { get; internal set; }
...

void m_timer_Tick(object sender, EventArgs e)
{
    if (m_data == null)
    {
        //Create a data array
       ...
        IntensityPoints = ConvertIntesityPoint(m_data);
    }

    //Set new values to data array
    for (int iCol = 0; iCol < DataColumnCount; iCol++)
    {
        for (int iRow = 0; iRow < DataRowCount; iRow++)
        {
            IntensityPoints[iCol, iRow].Value = (double)m_iRound + 20.0 * Math.Sin((double)iCol * (double)iRow / 5000.0);
        }
    }

    //Call View Method
    UpdateChartInView();
    ...
}
...

Code: Select all

var binding = new Binding(nameof(MySeries.Data))
{
    Source = mSe,
    Mode = BindingMode.OneWay,
    Converter = new DoubleToIntensityPointConverter(),
};
BindingOperations.SetBinding(iSe, IntensityGridSeries.DataProperty, binding);