Scatter Displayer

Charts > Using the Charts Library > Data Display > Using Single Displayers > Scatter Displayer

Scatter Displayer

A scatter displayer has the following basic characteristics:

Class	IlvScatterChartDisplayer
Category	Single
Number of real data sets displayed	1
Can be used with all types of projections	Yes
Items drawn	Markers

The following properties are specific to a scatter displayer:

Property	Methods	Default Value
Marker Type	getMarker setMarker	IlvMarkerFilledSquare
Marker Size	getMarkerSize setMarkerSize	IlvDefaultMarkerSize

Figure 8.2 illustrates the fact that a scatter displayer can be used with all types of projections. Data sets are represented by scatter displayers in a Cartesian chart (using a Cartesian projection) and in a polar chart (using a polar projection).

Figure 8.2 Scatter Displayers in a Cartesian Chart and in a Polar Chart

We can use the scatter displayer displaying the blue triangles as an example. We can create this displayer by using the following code:

IlvScatterChartDisplayer* displayer =

new IlvScatterChartDisplayer(IlvMarkerFilledTriangle,

IlvDefaultMarkerSize);

displayer->setForeground(dpy->getColor("blue"));

Note: The Drawn Filled property has no meaning for a scatter displayer. The markers are simply drawn with the foreground color of the defined palette.

Version 6.0