Bug 182270 Sample Data issue [0001]
Description: Sample Data issue. Build number: 2.2.0.v20070413-1121 Steps to reproduce: 1. Drag a chart from Palette to Layout, first setlect type as Gantt, then change back to Bar,check the "Chart Preview" pane. Expected result: Y Axis is still of linear type. Actual result: Y Axis is of Date/Time type. Error log: N/A
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/type/LineChart.java
{
			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( );
		
		ChartCacheManager.getInstance( )
				.cacheSeries( ChartUIUtil.getAllOrthogonalSeriesDefinitions( helperModel ) );
		if ( ( currentChart instanceof ChartWithAxes ) )
		{
			if ( currentChart.getType( ).equals( TYPE_LITERAL ) )
			{
				if ( !currentChart.getSubType( ).equals( sNewSubType ) )
				{
					currentChart.setSubType( sNewSubType );
					EList axes = ( (Axis) ( (ChartWithAxes) currentChart ).getAxes( )
							.get( 0 ) ).getAssociatedAxes( );
					for ( int i = 0; i < axes.size( ); i++ )
					{
						if ( sNewSubType.equalsIgnoreCase( PERCENTSTACKED_SUBTYPE_LITERAL ) )
						{
							if ( !ChartPreviewPainter.isLivePreviewActive( ) && !isNumbericAxis( (Axis) axes.get( i ) ) )
							{