Hi David

I managed to get the chart to draw each point with a colour of my choosing. I did not use the colour model, as that requires the use of a ColorPalette which overrides the colors you chose.

I don't know which version you are using (we have v6.3 here), but you need to implement the FillSceneGraph event for the chart. In there you can get all points drawn on the chart, and then to override the color of each one just use the point.PE.Fill to set the color depending on your formula.

Hope that helps.

Jeff

You don't need to override the pointset. Picture a drawing surface with existing pointsets. Now take any of the indexed points of a pointset and draw a symbol at the point's coordinates. Something like this:

//somewhere in the foreach(p in scene) loop store a reference to your pointset to make it accessible outside the loop; let's call it myPointSet.

//this will draw a large red circle over the 2nd point in the pointset
Point point = myPointSet.points[1].point;
Symbol symbol = new Symbol(point, SymbolIcon.Circle, SymbolIconSize.Large);
symbol.PE.Fill = Color.Red;
scene.Add(symbol);

Thanks for the info. Does this also work on version 6.3? I notice that there is no Infragistics.UltraChart.Shared.Events.FillSceneGraphEventArgs with my version.

 Also, the current code we have uses poinset primitives. When you say I need to add symbols on top, does that mean override the pointsets???

I am using a ChartLayer class which implements the ILayer class, and in there I have a FillSceneGraph(SceneGraph scene) method (this is legacy code which I did not write, see below):

 How would I implement different colours depending on the strategyId???

IDictionary pointSetData = chart.PointSetData;

if (points != null)

int counter = GetRow(points);

points.fillColor = Color.LimeGreen;

points.drawColor = Color.Blue;

points.icon = SymbolIcon.Triangle;

points.fillColor = Color.Red;

else

points.fillColor = Color.Yellow;

else

PointSet points = p as PointSet;

// Use pointSetData

// special case

points.fillColor = Color.LimeGreen;

points.iconSize = SymbolIconSize.Large;

short styleId = model.AnalysisModel.ChartProvider.StyleId(counter);

points.iconSize = SymbolIconSize.Medium;

else

points.fillColor = Color.Pink;

points.character = '#';

// Make different color around an icon

// Add labels

fontColor = Color.Red;

// Now add those new items

Sorry to hijack your thread, but I'm running across the same issue. I have an ScatterChart that I need to modify so that it paints each data point with a different color depending on a given formula.

If I try the ColorModel solution in this case, all the dots use the first PE property (since the PointSet probably counts as a single row), but if I do it in a PointChart3D chart I get the expected results. Is there a way to paint each data point in a custom way for an ScatterChart?