ColorVisual: IVZColorVisual;
The ColorVisual property determines visualizer used for bubble tree data mapping with their children color fill.
Executing the example requires that the repository contains an express report with the EXP identifier. The Color metric should be selected in the bubble tree report. The module containing the example should have links to the Drawing, Express, Metabase and Visualizators system assemblies. The specified procedure should be called from the Main entry point.
Before executing this example, the bubble tree looks as shown on the IVZBubbleTree interface description page. Fill bubbles with different shades of red:
Sub UserProc;
Var
Metabase: IMetabase; // Metabase
EaxAnalyzer: IEaxAnalyzer; // Express report
BubbleTree: IVZBubbleTree; // Bubble tree
ColorVisual: IVZColorVisual; // Color visualizator
ColorMapping: IVZDataSourceMapping; // Settings for data mapping with colors
Scale: IVZDataScale; // Color scale
i: Integer; // Loop counter
Item: IGxSolidBrush; // Color scale items
Color: IGxColor;
Begin
// Get metabase object
Metabase := MetabaseClass.Active;
// Get express report object
EaxAnalyzer := Metabase.ItemById("EXP").Edit As IEaxAnalyzer;
// Get bubble tree
BubbleTree := EaxAnalyzer.BubbleTree.BubbleTree;
// Get color visualizer
ColorVisual := BubbleTree.ColorVisual;
// Get settings used for data mapping with colors
ColorMapping := ColorVisual.ColorMapping;
// Get color scale
Scale := ColorMapping.Scale;
// Iterate over all scale elements
For i := 0 To Scale.ItemsCount - 1 Do
// Get scale elements
Item := Scale.Item(i) As IGxSolidBrush;
// Create red color
Color := New GxColor.CreateRGB(255 - 40 * i, 0, 0);
// Set created color for current scale element
Item.Color := Color;
End For;
// Set updated scale
ColorMapping.Scale := Scale;
// Save changes, made in express report
(EaxAnalyzer As IMetabaseObject).Save;
End Sub UserProc;
After executing the example, bubbles of the selected bubble tree are filled with different shades of red:
See also: