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/LineChart.java
sdBase.setDataSetRepresentation( "A, B, C" ); 
		sd.getBaseSampleData( ).add( sdBase );
		
		OrthogonalSampleData oSample = DataFactory.eINSTANCE.createOrthogonalSampleData( );
		oSample.setDataSetRepresentation( "5,-4,12" ); 
		oSample.setSeriesDefinitionIndex( 0 );
		sd.getOrthogonalSampleData( ).add( oSample );
		if ( newChart.getDimension( ) == ChartDimension.THREE_DIMENSIONAL_LITERAL )
		{
			BaseSampleData sdAncillary = DataFactory.eINSTANCE.createBaseSampleData( );
			sdAncillary.setDataSetRepresentation( "Series 1" ); 
			sd.getAncillarySampleData( ).add( sdAncillary );
		}
		newChart.setSampleData( sd );
	}
	private Chart getConvertedChart( Chart currentChart, String sNewSubType,
			Orientation newOrientation, String sNewDimension )
	{
		Chart helperModel = (Chart) EcoreUtil.copy( currentChart );
		ChartDimension oldDimension = currentChart.getDimension( );
		if ( ( currentChart instanceof ChartWithAxes ) )
		{
			if ( currentChart.getType( ).equals( TYPE_LITERAL ) ) 
			
			
			
			{
				if ( !currentChart.getSubType( ).equals( sNewSubType ) )