That worked...thanks!

BTW: Are there any samples that show how to draw extra lines onto column graphs or histograms? I need to draw some marker lines to represent AUR and other values.

thanks

-Ken

Hello,

In order to draw an element onto the chart you should handle OnFillSceneGraph event. Then you should to create an instance of primitive that you want to draw, set point (location of this element). It will be good if you associate this primitive with data point of the chart, and then to add this primitive to SceneGraph of the argument. You should use code like this:

ChartLayer layer = e.ChartCore.GetChartLayer();

            //this primitive represent histogram line

            IEnumerable<Polyline> pl = layer.ChartCore.SceneGraph.OfType<Polyline>();

            if (pl.Count<Polyline>() > 0)

            {

                Polyline pol = pl.First<Polyline>();

                //iterate trough all data point of the histogram to find these point

                //which matches to some condition

                foreach (DataPoint dp in pol.points)

                {

                    if (dp.Value != null && ((double)dp.Value) > 0.08d)

                    {

                        //create a primitive (in this case this is a symbol)

                        Infragistics.UltraChart.Core.Primitives.Symbol symbol = new Symbol(Infragistics.UltraChart.Shared.Styles.SymbolIcon.Plus, Infragistics.UltraChart.Shared.Styles.SymbolIconSize.Medium);

                        symbol.DataPoint = dp.DataPoint;

                        symbol.fillColor = Color.Violet;

                        symbol.PE.Fill = Color.Violet;

                        symbol.Layer = dp.Layer;

                        symbol.point = dp.point;

                        //add primitive to the ScreneGraph

                        e.SceneGraph.Add(symbol);

                    }

                }

            }

Let me know if you have any further questions.

I actually have another Histogram question :)

How can I keep the X.Label of the histogram from showing up on all columns? I want the labels to be in intervals of 50... (ie 0, 50, 100, 150, 200, ) instead of on every column.

thanks

-Ken

Hello, ­­­­­

I am just checking about the progress of this issue. Let me know If you need my further assistance on this  issue?

Thank you for using Infragistics Components.

Hello,

What you could do is to take a look at the chart sample browser which comes with the installation of the NetAdvantage and there are useful samples and there might be found at "C:\Users\Public\Documents\Infragistics\NetAdvantage 2010.2\Windows Forms\Samples\ FeatureBrowser.exe". And look for  “WinChart Sample Explorer ”, when you launch this sample look for Customization -> FillScreenGraph.

Let me know if you need any further assistance.

Thanks Hristo! I will try this out.

BTW: Are there any samples that go over advanced features of the graphs? Like your above sample.