Bug 117149 Add additional datapoint markers
I would like to propose adding additional datapoint markers. Attached is a set of markers I would like supported.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/type/ScatterChart.java
* @see org.eclipse.birt.chart.ui.swt.interfaces.IChartType#getModel(java.lang.String,
	 *      java.lang.String, java.lang.String)
	 */
	public Chart getModel( String sSubType, Orientation orientation,
			String sDimension, Chart currentChart )
	{
		ChartWithAxes newChart = null;
		if ( currentChart != null )
		{
			newChart = (ChartWithAxes) getConvertedChart( currentChart,
					sSubType,
					orientation,
					sDimension );
			if ( newChart != null )
			{
				return newChart;
			}
		}
		newChart = ChartWithAxesImpl.create( );
		newChart.setType( TYPE_LITERAL );
		newChart.setSubType( sSubType );
		newChart.setOrientation( orientation );
		newChart.setDimension( getDimensionFor( sDimension ) );
		newChart.setUnits( "Points" ); 
		( (Axis) newChart.getAxes( ).get( 0 ) ).setOrientation( Orientation.HORIZONTAL_LITERAL );
		( (Axis) newChart.getAxes( ).get( 0 ) ).setType( AxisType.LINEAR_LITERAL );
		( (Axis) newChart.getAxes( ).get( 0 ) ).setCategoryAxis( false );
		SeriesDefinition sdX = SeriesDefinitionImpl.create( );
		Series baseSeries = SeriesImpl.create( );
		sdX.getSeries( ).add( baseSeries );