Completed
Last Updated: 30 Jul 2019 13:03 by ADMIN
Inside the constructor of a form create a pie series and populate it with data. Then add it to a RadChartView. You will notice that there are two legend items per data point.
Completed
Last Updated: 03 Jul 2019 13:41 by Jonathan
Release R3 2019 (LIB 2019.2.708)
Currently, there is no way to increase the line thickness.
Completed
Last Updated: 03 Jul 2019 11:22 by ADMIN
Release R3 2019 (LIB 2019.2.708)
The same issue can be observed in a DPI-aware application on higher scaling
Workaround: set the RadControl.EnableDpiScaling property to false

public partial class Form1 : Form
{
    public Form1()
    {
        RadControl.EnableDpiScaling = false;

        InitializeComponent();

        LineSeries lineSeries = new LineSeries();
        lineSeries.DataPoints.Add(new CategoricalDataPoint(20, "Jan"));
        lineSeries.DataPoints.Add(new CategoricalDataPoint(22, "Apr"));
        lineSeries.DataPoints.Add(new CategoricalDataPoint(12, "Jul"));
        lineSeries.DataPoints.Add(new CategoricalDataPoint(19, "Oct"));
        this.radChartView1.Series.Add(lineSeries);

        LineSeries lineSeries2 = new LineSeries();
        lineSeries2.DataPoints.Add(new CategoricalDataPoint(18, "Jan"));
        lineSeries2.DataPoints.Add(new CategoricalDataPoint(15, "Apr"));
        lineSeries2.DataPoints.Add(new CategoricalDataPoint(17, "Jul"));
        lineSeries2.DataPoints.Add(new CategoricalDataPoint(22, "Oct"));
        this.radChartView1.Series.Add(lineSeries2);
        
        LassoZoomController lassoZoomController = new LassoZoomController();
        radChartView1.Controllers.Add(lassoZoomController);
    }

    private void radButton1_Click(object sender, EventArgs e)
    {
        this.radChartView1.ExportToImage(@"..\..\image.png", this.radChartView1.Size);
    }
}
Completed
Last Updated: 03 Jul 2019 11:21 by ADMIN
Release R3 2019 (LIB 2019.2.708)

Use attached to reproduce. 

Workaround:

series.DataPoints.Add(new PieDataPoint(0.01, "Germany"));
series.DataPoints.Add(new PieDataPoint(0.01, "United States"));

 

Completed
Last Updated: 03 Jul 2019 04:10 by ADMIN
Release R3 2018
To reproduce:
- Just add StochasticSlowIndicator to a chart.
Completed
Last Updated: 31 May 2019 09:37 by ADMIN
To reproduce:

1. Perform zoom and pan operation and click the print/print preview button:
2. You will notice that the printed chart is not exactly the same as the displayed one. Please refer to the attached screenshot.

public Form1()
{
    InitializeComponent();

    LineSeries lineSeries = new LineSeries();
    lineSeries.DataPoints.Add(new CategoricalDataPoint(20, "Jan"));
    lineSeries.DataPoints.Add(new CategoricalDataPoint(22, "Apr"));
    lineSeries.DataPoints.Add(new CategoricalDataPoint(12, "Jul"));
    lineSeries.DataPoints.Add(new CategoricalDataPoint(19, "Oct"));
    this.radChartView1.Series.Add(lineSeries);

    LineSeries lineSeries2 = new LineSeries();
    lineSeries2.DataPoints.Add(new CategoricalDataPoint(18, "Jan"));
    lineSeries2.DataPoints.Add(new CategoricalDataPoint(15, "Apr"));
    lineSeries2.DataPoints.Add(new CategoricalDataPoint(17, "Jul"));
    lineSeries2.DataPoints.Add(new CategoricalDataPoint(22, "Oct"));
    this.radChartView1.Series.Add(lineSeries2);

    ChartPanZoomController panZoomController = new ChartPanZoomController();
    panZoomController.PanZoomMode = ChartPanZoomMode.Horizontal;
    radChartView1.Controllers.Add(panZoomController);
}

private void radButton1_Click(object sender, EventArgs e)
{
    this.radChartView1.PrintPreview();
}

3.The issue also appears when the LassoZoomController is used.
 
Completed
Last Updated: 02 Apr 2019 15:45 by Dimitar
Release R2 2019 (LIB 2019.1.408)

After 1 million the decimal places of the labels are not correct, In your image. the labels on the horizontal axis go 999,992.50 - 999,995.00 - 999,997.5 -  1,000,000.00 - *1,000,003.00(should be 1,000,002.50) - 1,000,005.00 - *1,000,008.00(should be 1,000,007.5)

Completed
Last Updated: 27 Nov 2018 16:14 by Dimitar
To reproduce:
- Add a chart to the form and set series with DataSource
- Close and dispose the form

Workaround:
Set the DataSource property of the series to null prior closing.
Completed
Last Updated: 23 Nov 2018 11:34 by Dimitar
To reproduce:
            WaterfallSeries series = new WaterfallSeries();
            series.ShowLabels = true;

            series.DataPoints.Add(new WaterfallDataPoint(50000, false, false, "Beginning\nBalance"));
            series.DataPoints.Add(new WaterfallDataPoint(17000, false, false, "Jan"));
            series.DataPoints.Add(new WaterfallDataPoint(14000, false, false, "Feb"));
            series.DataPoints.Add(new WaterfallDataPoint(-12000, false, false, "Mar"));
            series.DataPoints.Add(new WaterfallDataPoint(69000, true, false, "Q1"));
            series.DataPoints.Add(new WaterfallDataPoint(-22000, false, false, "Apr"));
            series.DataPoints.Add(new WaterfallDataPoint(-18000, false, false, "May"));
            series.DataPoints.Add(new WaterfallDataPoint(500, false, false, "Jun"));
            series.DataPoints.Add(new WaterfallDataPoint(-30000, true, false, "Q2"));
            series.DataPoints.Add(new WaterfallDataPoint(39000, false, true, "Ending\nBalance"));
            this.radChartView1.Series.Add(series);

            CartesianGridLineAnnotation annotation1 = new CartesianGridLineAnnotation();
            annotation1.Label = "Annotation";
            annotation1.ForeColor = Color.Lime;
            annotation1.BackColor = Color.Black;
            this.radChartView1.Annotations.Add(annotation1);

Workaround:

        public RadForm1()
        {
            InitializeComponent();
            this.radChartView1.CreateRenderer += radChartView1_CreateRenderer;

            WaterfallSeries series = new WaterfallSeries();
            series.ShowLabels = true;
     
            series.DataPoints.Add(new WaterfallDataPoint(50000, false, false, "Beginning\nBalance"));
            series.DataPoints.Add(new WaterfallDataPoint(17000, false, false, "Jan"));
            series.DataPoints.Add(new WaterfallDataPoint(14000, false, false, "Feb"));
            series.DataPoints.Add(new WaterfallDataPoint(-12000, false, false, "Mar"));
            series.DataPoints.Add(new WaterfallDataPoint(69000, true, false, "Q1"));
            series.DataPoints.Add(new WaterfallDataPoint(-22000, false, false, "Apr"));
            series.DataPoints.Add(new WaterfallDataPoint(-18000, false, false, "May"));
            series.DataPoints.Add(new WaterfallDataPoint(500, false, false, "Jun"));
            series.DataPoints.Add(new WaterfallDataPoint(-30000, true, false, "Q2"));
            series.DataPoints.Add(new WaterfallDataPoint(39000, false, true, "Ending\nBalance"));
            this.radChartView1.Series.Add(series);
 
            CartesianGridLineAnnotation annotation1 = new CartesianGridLineAnnotation();
            annotation1.Label = "Annotation";
            annotation1.ForeColor = Color.Lime;
            annotation1.BackColor = Color.Black;
            annotation1.PositonOffset = new SizeF(0, -20);
            annotation1.Axis = this.radChartView1.Axes[1] as CartesianAxis;
            annotation1.Value = 70000;
            annotation1.BorderColor = Color.Red;
            annotation1.BorderDashStyle = DashStyle.Solid;
            annotation1.BorderWidth = 1;
            this.radChartView1.Annotations.Add(annotation1);
        }

        private void radChartView1_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
        {
            e.Renderer = new CustomCartesianRenderer(e.Area as CartesianArea);
        }
 
        public class CustomCartesianRenderer : CartesianRenderer
        {
            public CustomCartesianRenderer(CartesianArea area) : base(area)
            {
            }
 
            protected override void Initialize()
            {
                base.Initialize();
                for (int i = 0; i <= this.DrawParts.Count - 1; i++)
                {
                    CartesianGridLineAnnotationDrawPart annotationPart = this.DrawParts[i] as CartesianGridLineAnnotationDrawPart;
                    if (annotationPart != null)
                    {
                        this.DrawParts[i] = new CustomCartesianGridLineAnnotationDrawPart((CartesianGridLineAnnotation)annotationPart.Element, this);
                    }
                }
            }
        }

        public class CustomCartesianGridLineAnnotationDrawPart : CartesianGridLineAnnotationDrawPart
        {
            public CustomCartesianGridLineAnnotationDrawPart(CartesianGridLineAnnotation element, CartesianRenderer renderer) : base(element, renderer)
            {
            }

            public override void Draw()
            {
                FieldInfo fi = typeof(CartesianGridLineAnnotation).GetField("model", BindingFlags.NonPublic | BindingFlags.Instance);
                ChartAnnotationModel model = fi.GetValue(this.Element) as ChartAnnotationModel;
                RectangleF
                rect = ChartRenderer.ToRectangleF(model.LayoutSlot);
                rect.Offset(this.ViewportOffsetX, this.ViewportOffsetY);

                Graphics graphics = this.Renderer.Surface as Graphics;
                RadGdiGraphics radGraphics = new RadGdiGraphics(graphics);

                Rectangle clipRect = ChartRenderer.ToRectangle(this.Element.View.GetArea<CartesianArea>().AreaModel.PlotArea.LayoutSlot);
                clipRect.Offset((int)this.ViewportOffsetX, (int)this.ViewportOffsetY);
                graphics.SetClip(clipRect);

                GraphicsPath path = new GraphicsPath();
                path.AddLine(rect.Location, new PointF(rect.Right, rect.Bottom));

                BorderPrimitiveImpl border = new BorderPrimitiveImpl(this.Element, null);
                border.PaintBorder(radGraphics, null, path, rect);

                rect.Size = graphics.MeasureString(this.Element.Label, this.Element.Font);
                rect.Offset(this.Element.PositonOffset.Width + 1, this.Element.PositonOffset.Height + 1);

                TextParams tp = new TextParams();
                tp.font = this.Element.Font;
                tp.foreColor = this.Element.ForeColor;
                tp.paintingRectangle = rect;
                tp.text = this.Element.Label;

                FillPrimitiveImpl fill = new FillPrimitiveImpl(this.Element, null);
                fill.PaintFill(radGraphics, null, rect);
            
                TextPrimitiveHtmlImpl text = new TextPrimitiveHtmlImpl();
                text.PaintPrimitive(radGraphics, 0f, new SizeF(1f, 1f), tp);
            }
        }
Completed
Last Updated: 07 Nov 2018 14:13 by ADMIN
Note: similar to the axis, the series should also have ClipLabels property which will control whether the labels will be clipped or not.

How to reproduce: zoom and pan along the chart
public Form1()
{
    InitializeComponent();

    this.radChartView1.CreateRenderer += radChartView1_CreateRenderer;
    this.radChartView1.ShowPanZoom = true;

    BarSeries barSeries = new BarSeries();
    Random rand = new Random();
    for (int i = 1; i < 10; i++)
    {
        barSeries.DataPoints.Add(new CategoricalDataPoint(rand.Next(100), i));
    }

    barSeries.ShowLabels = true;
    this.radChartView1.Series.Add(barSeries);
}

Workaround:
 public partial class Form1 : Form
 {
     public Form1()
     {
         InitializeComponent();

         this.radChartView1.CreateRenderer += radChartView1_CreateRenderer;
         this.radChartView1.ShowPanZoom = true;

         BarSeries barSeries = new BarSeries();
         Random rand = new Random();
         for (int i = 1; i < 10; i++)
         {
             barSeries.DataPoints.Add(new CategoricalDataPoint(rand.Next(100), i));
         }

         barSeries.ShowLabels = true;
         this.radChartView1.Series.Add(barSeries);
     }

     private void radChartView1_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
     {
         e.Renderer = new CustomCartesianRenderer(e.Area as CartesianArea);
     }
 }

 public class CustomCartesianRenderer : CartesianRenderer
 {
     public CustomCartesianRenderer(CartesianArea area)
         : base(area)
     { }
     protected override void Initialize()
     {
         base.Initialize();

         for (int i = 0; i < this.DrawParts.Count; i++)
         {
             BarLabelElementDrawPart labelPart = this.DrawParts[i] as BarLabelElementDrawPart;
             if (labelPart != null)
             {
                 this.DrawParts[i] = new CustomLabelElementDrawPart((BarSeries)labelPart.Element, this);
             }
         }
     }
 }

 public class CustomLabelElementDrawPart : BarLabelElementDrawPart
 {
     public CustomLabelElementDrawPart(ChartSeries owner, IChartRenderer renderer)
         : base(owner, renderer)
     { }
     
     public override void Draw()
     {
         Graphics graphics = this.Renderer.Surface as Graphics;
         CartesianSeries cartesianSeries = this.Element as CartesianSeries;
         if (cartesianSeries != null)
         {
             CartesianArea area = (CartesianArea)cartesianSeries.GetType().GetField("area", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(cartesianSeries);
             RectangleF clipRect = (RectangleF)area.GetType().GetMethod("GetCartesianClipRect", BindingFlags.Instance | BindingFlags.NonPublic).Invoke(area, new object[] { });//.GetCartesianClipRect();
             graphics.SetClip(clipRect);
         }

         base.Draw();

         graphics.ResetClip();
     }
 }
Completed
Last Updated: 19 Sep 2018 12:49 by Dimitar
How to reproduce:
private void UpdateChart()
{
    this.radChartView1.Series.Clear();

    // Create two series for the bar chart.
    BarSeries requiredBarSeries = new BarSeries
    {
        ShowLabels = true,
        CombineMode = ChartSeriesCombineMode.Cluster,
        NumberOfColors = 2,
    };

    BarSeries actualBarSeries = new BarSeries
    {
        ShowLabels = true,
        CombineMode = ChartSeriesCombineMode.Cluster,
        NumberOfColors = 2,
    };
    
    // Add the data. 
    AddDataPoint(requiredBarSeries, .0333d, "Germany", "Required");
    AddDataPoint(actualBarSeries, .050d, "Germany", "Actual");
    AddDataPoint(requiredBarSeries, .0333d, "United States", "Required");
    AddDataPoint(actualBarSeries, .050d, "United States", "Actual");
    AddDataPoint(requiredBarSeries, .00d, "France", "Required");
    AddDataPoint(actualBarSeries, .050d, "France", "Actual");

    AddDataPoint(requiredBarSeries, 0.0d, "United Kingdom", "Required");
    AddDataPoint(actualBarSeries, .050d, "United Kingdom", "Actual");


    AddDataPoint(requiredBarSeries, 0.955d, "Russia", "Required");
    // Change the following value to .95d to see 
    // the issue.
    AddDataPoint(actualBarSeries, .15d, "Russia", "Actual");

    this.radChartView1.Series.Add(requiredBarSeries);
    this.radChartView1.Series.Add(actualBarSeries);

    CategoricalAxis horizontalAxis = radChartView1.Axes[0] as CategoricalAxis;
    horizontalAxis.LabelFitMode = AxisLabelFitMode.MultiLine;
}

private void AddDataPoint(BarSeries series, double val, string category, string label)
{
    series.DataPoints.Add(new CategoricalDataPoint
    {
        Value       = val,
        Label       = String.Format("{0}\n{1:P2}", label, val),
        Category    = category
    });
}

Workaround: create a custom SmartLabelsController
public RadForm1()
        {
            InitializeComponent();


            SmartLabelsController labelsController = new CustomSmartLabelsController();
            this.radChartView1.Controllers.Add(labelsController);
     
            // Set up the chart
        }

public class CustomSmartLabelsController : SmartLabelsController
    {
        protected override SmartLabelsStrategyBase GetDefaultStrategy(ChartArea area)
        {
            SmartLabelsStrategyBase strategy = base.GetDefaultStrategy(area);

            if (strategy is VerticalAdjusmentLabelsStrategy)
            {
                strategy = new CustomVerticalAdjusmentLabelsStrategy();
                Dictionary<Type, List<Type>> strategies = typeof(SmartLabelsController).GetField("strategySeries", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).GetValue(this) as Dictionary<Type, List<Type>>;
                strategies.Remove(typeof(VerticalAdjusmentLabelsStrategy));
                strategies.Add(typeof(CustomVerticalAdjusmentLabelsStrategy), new List<Type> { typeof(BarSeries), typeof(LineSeriesBase) });
            }

            return strategy;
        }
    }

    public class CustomVerticalAdjusmentLabelsStrategy : VerticalAdjusmentLabelsStrategy
    {
        public override void CalculateLocations(ChartSeriesCollection series, Rectangle plotArea)
        {
            if (series.Count == 0)
            {
                return;
            }

            List<LabelElement> labels = new List<LabelElement>();
            List<int> overlaps = new List<int>();

            foreach (ChartSeries chartSeries in series)
            {
                if (!chartSeries.ShowLabels || !chartSeries.IsVisible)
                {
                    continue;
                }

                foreach (DataPointElement point in chartSeries.Children)
                {
                    LabelElement label = (LabelElement)point.Children[0];
                    Rectangle labelRect = ChartRenderer.ToRectangle(label.GetLayoutSlot());
                    labelRect.X += (int)(series[0].View.Viewport.X + ((IChartView)series[0].View).PlotOriginX);
                    labelRect.Y += (int)(series[0].View.Viewport.Y + ((IChartView)series[0].View).PlotOriginY);

                    if (chartSeries.View.GetArea<CartesianArea>().Orientation == Orientation.Vertical)
                    {
                        labelRect.Y -= this.DistanceToLabel;
                    }
                    else
                    {
                        labelRect.X += this.DistanceToLabel;
                    }

                    labelRect.Inflate(0, this.DistanceBetweenLabels);

                    label.SmartRectangle = labelRect;
                    labels.Add(label);
                }
            }

            CartesianSeries cartesianSeries = (CartesianSeries)series[0];

            if (cartesianSeries != null)
            {
                this.RestrictWithinAxes(labels, cartesianSeries);
            }

            LabelElement labelToMove = this.GetElementWithMostOverlaps(labels, series);
            int counter = 0;

            while (labelToMove != null && counter < labels.Count)
            {
                Rectangle firstDirectionRect;
                Rectangle secondDirectionRect;
                int firstMoveCost;
                int secondMoveCost;

                Rectangle dataPointLayout = ChartRenderer.ToRectangle(labelToMove.DataPoint.LayoutSlot);
                dataPointLayout.X += (int)labelToMove.View.Viewport.X;
                dataPointLayout.Y += (int)labelToMove.View.Viewport.Y;

                if (cartesianSeries.View.GetArea<CartesianArea>().Orientation == System.Windows.Forms.Orientation.Vertical)
                {
                    firstDirectionRect = this.GetBestPositionInUpwardDirection(labels, labelToMove, cartesianSeries);
                    secondDirectionRect = this.GetBestPositionInDownwardDirection(labels, labelToMove, cartesianSeries);

                    firstMoveCost = Math.Abs(labelToMove.SmartRectangle.Y - firstDirectionRect.Y);
                    secondMoveCost = Math.Abs(labelToMove.SmartRectangle.Y - secondDirectionRect.Y);
                }
                else
                {
                    firstDirectionRect = this.GetBestPositionInLeftDirection(labels, labelToMove, cartesianSeries);
                    secondDirectionRect = this.GetBestPositionInRightDirection(labels, labelToMove, cartesianSeries);

                    firstMoveCost = Math.Abs(dataPointLayout.X - firstDirectionRect.X);
                    secondMoveCost = Math.Abs(dataPointLayout.X - secondDirectionRect.X);
                }

                if (!dataPointLayout.IntersectsWith(secondDirectionRect) && firstMoveCost > secondMoveCost)
                {
                    labelToMove.SmartRectangle = secondDirectionRect;
                }
                else
                {
                    labelToMove.SmartRectangle = firstDirectionRect;
                }

                labelToMove = this.GetElementWithMostOverlaps(labels, series);
                counter++;
            }

            this.FinalPositionsOptimization(labels);

            foreach (LabelElement label in labels)
            {
                Rectangle rect = label.SmartRectangle;
                rect.Inflate(0, -this.DistanceBetweenLabels);

                Rectangle dataPointLayout = ChartRenderer.ToRectangle(label.DataPoint.LayoutSlot);
                dataPointLayout.X += (int)cartesianSeries.View.Viewport.X;
                dataPointLayout.Y += (int)cartesianSeries.View.Viewport.Y;
                int delta = 1;

                if (dataPointLayout.Y > label.SmartRectangle.Y)
                {
                    delta = -1;
                }

                rect.Y += delta * this.DistanceToLabel;
                label.SmartRectangle = rect;
            }
        }
    }
Completed
Last Updated: 28 Aug 2018 12:33 by Dimitar
ADMIN
Created by: Hristo
Comments: 0
Category: ChartView
Type: Feature Request
0

			
Completed
Last Updated: 28 Aug 2018 07:59 by Dimitar
To reproduce: run the attached sample project and you will notice that the data points are not properly aligned.

Workaround: use equal number of data points for the series.
Completed
Last Updated: 17 Jul 2018 12:59 by Dimitar
To reproduce:
- The total amount should go bellow 0 with the last point:

var ws = new WaterfallSeries();
ws.ShowLabels = true;
ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(10.0, false, false));
ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(2.0, false, false));
ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(3.0, false, false));

ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(-20.0, false, false));

radChartView1.Series.Add(ws);

Workaround:
Set the minimum:
var verticalAxis = radChartView1.Axes[1] as LinearAxis;
verticalAxis.Minimum = -10;

Completed
Last Updated: 17 Jul 2018 10:36 by Dimitar
How to reproduce:
Check the attached project

Workaround:
Create a separate custom MACD indicator and add it to the chart, uncomment the commented code in the attached project

Friend Class MacdCustomIndicator
    Inherits MacdIndicator

    Private customBorderColor As Color
    Public Property BorderColor() As Color
        Get
            Return customBorderColor
        End Get
        Set(ByVal value As Color)
            customBorderColor = value
            Me.ChildIndicator.BorderColor = value
        End Set
    End Property

    Sub New()
        Dim customMacdInnerIndicator = New CustomMacdInnerIndicator(Me)
        Me.GetType().BaseType.GetField("childIndicator", BindingFlags.Instance Or BindingFlags.NonPublic).SetValue(Me, customMacdInnerIndicator)
    End Sub

End Class

Friend Class CustomMacdInnerIndicator
    Inherits MacdInnerIndicator
    Public Sub New(owner As MacdIndicator)
        MyBase.New(owner)
    End Sub

    Public Overrides Function GetProcessedValue(currentIndex As Integer) As Double

        Dim macd As Double = Me.CalculateMacdValue(currentIndex, LongPeriod, ShortPeriod)
        Me.Cache(macdValues).Add(currentIndex, macd)
        Return macd
    End Function
End Class
Completed
Last Updated: 17 Jul 2018 07:17 by Dimitar
How to reproduce: the issue can be observed when opening a form with a RadChartView which is not visible located in RadScrollablePanel. The panel will scroll to the chart which is not desired

Workaround: 
public partial class RadForm1 : Telerik.WinControls.UI.RadForm
{
    public RadForm1()
    {
        InitializeComponent();

        this.radScrollablePanel1.AllowAutomaticScrollToControl = false;
    }

    protected override void OnVisibleChanged(EventArgs e)
    {
        base.OnVisibleChanged(e);

        this.radScrollablePanel1.HorizontalScrollbar.Value = 0;;
    }
}
Completed
Last Updated: 17 Jul 2018 07:17 by Dimitar
Use attached to reproduce.

Workaround:
private void radChartView1_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
{
    e.Renderer = new CustomCartesianRenderer(e.Area as CartesianArea);
}

public class CustomCartesianRenderer : CartesianRenderer
{
    public CustomCartesianRenderer(CartesianArea area) : base(area)
    {
    }

    protected override void Initialize()
    {
        base.Initialize();
        for (int i = 0; i < this.DrawParts.Count; i++)
        {
            LineSeriesDrawPart linePart = this.DrawParts[i] as LineSeriesDrawPart;
            if (linePart != null)
            {
                this.DrawParts[i] = new CustomLineSeriesDrawPart((LineSeries)linePart.Element, this);
            }
        }
    }

    
}
public class CustomLineSeriesDrawPart : LineSeriesDrawPart
{
    public CustomLineSeriesDrawPart(LineSeriesBase series, IChartRenderer renderer) : base(series, renderer)
    {
    }

    protected override PointF[] GetPointsPositionsArray()
    {
        List<DataPoint> points = new List<DataPoint>(this.Element.DataPoints);

        PointF[] result = new PointF[points.Count];

        for (int i = 0; i < points.Count; i++)
        {
            result[i] = new PointF(this.OffsetX + (float)points[i].LayoutSlot.X, this.OffsetY + (float)points[i].LayoutSlot.Y);
        }

        return result;
    }

}
Completed
Last Updated: 04 Jul 2018 11:32 by ADMIN
To reproduce:
            DataTable table = new DataTable();
            table.Columns.Add("Value", typeof(double));
            table.Columns.Add("Name", typeof(string));
            table.Rows.Add(1, "John");
            table.Rows.Add(3, "Adam");
            table.Rows.Add(5, "Peter");
            table.Rows.Add(12, "Sam");
            table.Rows.Add(6, "Paul");

            BarSeries lineSeria = new BarSeries();
            radChartView1.Series.Add(lineSeria);
            lineSeria.ValueMember = "Value";
            lineSeria.CategoryMember = "Name";

            this.radChartView1.DataSource = table;

        private void radButton1_Click(object sender, EventArgs e)
        { 
            this.radChartView1.DataSource = null; 
        }

The chart data will be still visible. It is necessary to set explicitly the DataSource of the series:
this.radChartView1.Series[0].DataSource = null;
Completed
Last Updated: 02 Jul 2018 09:36 by Dimitar
To reproduce:
- Add a polar chart with a selection controller.
- Click near the bottom right corner of the point (10 pixels away)
- The point is selected.

Workaround:
private void Chart_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
{
    e.Renderer = new MyPolarRenderer(e.Area as PolarArea);
}


class MyPolarRenderer : PolarRenderer
{
    public MyPolarRenderer(PolarArea area) : base(area)
    { }

    protected override void Initialize()
    {
        base.Initialize();
        for (int i = 0; i < this.DrawParts.Count; i++)
        {
            PolarPointSeriesDrawPart linePart = this.DrawParts[i] as PolarPointSeriesDrawPart;
            if (linePart != null)
            {
                this.DrawParts[i] = new MyDrawpart((PolarPointSeries)linePart.Element, this);
            }
        }
    }


}
class MyDrawpart : PolarPointSeriesDrawPart
{
    public MyDrawpart(PolarPointSeries series, IChartRenderer renderer) : base(series, renderer)
    { }
    public override DataPoint HitTest(Point location)
    {
        if (this.Element.PointSize.Width == 0 || this.Element.PointSize.Height == 0)
        {
            return null;
        }

        for (int i = 0; i < this.Element.DataPoints.Count; i++)
        {
            RadRect slot = this.Element.DataPoints[i].LayoutSlot;
            float pointHalfWidth = this.Element.PointSize.Width / 2;
            float pointHalfHeight = this.Element.PointSize.Height / 2;

            RectangleF dataPointBounds = new RectangleF((float)(slot.X - pointHalfWidth), (float)(slot.Y - pointHalfHeight), this.Element.PointSize.Width, this.Element.PointSize.Height);

            if (dataPointBounds.Contains(location.X, location.Y))
            {
                return this.Element.DataPoints[i];
            }
        }

        return null;
    }
}



Completed
Last Updated: 26 Jun 2018 06:55 by Dimitar
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 0
Category: ChartView
Type: Bug Report
2
To reproduce: please refer to the attached sample project and gif file.

Workaround: 
            CustomLassoSelectionController lassoSelectionController = new CustomLassoSelectionController(); 
            this.radChartView1.Controllers.Add(lassoSelectionController);

        public class CustomLassoSelectionController : LassoSelectionController
        {
            private IList<DataPoint> selectedPoints = null;

            public CustomLassoSelectionController()
            {
                this.selectedPoints = new List<DataPoint>();
            }

            private Point ClipLocation(Point point)
            {
                CartesianArea area = this.Area.View.GetArea<CartesianArea>();
                if (area != null)
                {
                    RectangleF clipRect = GetCartesianClipRect(area);

                    if (point.X < clipRect.X)
                    {
                        point = new Point((int)clipRect.X, point.Y);
                    }

                    if (point.X > clipRect.Width + clipRect.X)
                    {
                        point = new Point((int)clipRect.Width + (int)clipRect.X, point.Y);
                    }

                    if (point.Y < clipRect.Y)
                    {
                        point = new Point(point.X, (int)clipRect.Y);
                    }

                    if (point.Y > clipRect.Height + clipRect.Y)
                    {
                        point = new Point(point.X, (int)clipRect.Height + (int)clipRect.Y);
                    }
                }

                return point;
            }

            internal RectangleF GetCartesianClipRect(CartesianArea area)
            {
                float x1, x2, y1, y2;
                x1 = 0;
                y1 = 0;
                x2 = (float)area.View.Viewport.Right;
                y2 = (float)area.View.Viewport.Bottom;

                foreach (var axis in area.View.Axes)
                {
                    if (axis.AxisType == AxisType.First)
                    {
                        if (axis.Model.VerticalLocation == AxisVerticalLocation.Bottom)
                        {
                            y2 = Math.Min(y2, (float)axis.Model.LayoutSlot.Y);
                        }
                        else
                        {
                            y1 = Math.Max(y1, (float)axis.Model.LayoutSlot.Bottom);
                        }

                        x1 = Math.Min(x1, (float)axis.Model.LayoutSlot.X);
                        x2 = Math.Min(x2, (float)axis.Model.LayoutSlot.Right);
                    }
                    else
                    {
                        if (axis.Model.HorizontalLocation == AxisHorizontalLocation.Left)
                        {
                            x1 = Math.Max(x1, (float)axis.Model.LayoutSlot.Right);
                        }
                        else
                        {
                            x2 = Math.Min(x2, (float)axis.Model.LayoutSlot.X);
                        }

                        y1 = Math.Max(y1, (float)axis.Model.LayoutSlot.Y);
                        y2 = Math.Min(y2, (float)axis.Model.LayoutSlot.Bottom);
                    }
                }

                RectangleF result = new RectangleF((float)area.View.Viewport.X + x1, (float)area.View.Viewport.Y + y1, x2 - x1 + 1, y2 - y1 + 1);

                return result;
            }

            protected override ActionResult OnMouseUp(MouseEventArgs e)
            {
                if (e.Button != MouseButtons.Left || this.MouseDownLocation == Point.Empty || this.MouseMoveLocation == Point.Empty)
                {
                    return base.OnMouseUp(e);
                }

                if (MouseDownLocation != MouseMoveLocation)
                {
                    this.MouseMoveLocation = ClipLocation(e.Location);
                    CartesianArea area = this.Area.View.GetArea<CartesianArea>();

                    if (area != null)
                    {
                        this.selectedPoints.Clear();
                        RectangleF areaRect = RectangleF.Empty;
                        IChartView chartView = this.Area.View;
                        areaRect = GetCartesianClipRect(area);

                        Point topLeft = new Point(Math.Min(MouseDownLocation.X, e.X), Math.Min(MouseDownLocation.Y, e.Y));
                        Point lowerRight = new Point(Math.Max(MouseDownLocation.X, e.X), Math.Max(MouseDownLocation.Y, e.Y));
                        RectangleF lassoRect = new RectangleF(new PointF(topLeft.X - (float)chartView.PlotOriginX - area.View.Margin.Left, topLeft.Y - (float)chartView.PlotOriginY - area.View.Margin.Top), new SizeF(lowerRight.X - topLeft.X, lowerRight.Y - topLeft.Y));

                        foreach (var series in area.View.Series)
                        {
                            foreach (var dataPoint in series.DataPoints)
                            {
                                if (lassoRect.Contains(new PointF((float)dataPoint.LayoutSlot.Location.X, (float)dataPoint.LayoutSlot.Location.Y)))
                                {
                                    dataPoint.IsSelected = true;
                                    this.selectedPoints.Add(dataPoint);
                                }
                                else
                                {
                                    dataPoint.IsSelected = false;
                                }
                            }
                        }
                        
                        ChartDataPointsEventArgs changedArgs = new ChartDataPointsEventArgs(this.selectedPoints);
                        this.OnLassoSelectedPointsChanged(changedArgs);
                    }

                    MouseDownLocation = MouseMoveLocation = Point.Empty;
                }

                this.Result.ShouldInvalidate = true;
                return this.Result;
            }
        }
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