Bug 208412 Enhance Chart Engine to process grouped, uni-dimensional Data
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationBase.java
renderToImageFile( gcs );
			
			
			rowAdapter.close( );
			
			
			if ( rtc.getScale( ) != null && !rtc.getScale( ).isShared( ) )
			{
				rtc.getScale( ).setShared( true );
				( (ChartReportItemImpl) getReportItem( handle ) ).setScale( rtc.getScale( ) );
			}
			
			return getImageToDisplay( );
		}
		catch ( BirtException birtException )
		{
			
			
			if ( isNoDataException( birtException ) )
			{
				return null;
			}
			else
			{
				throw birtException;
			}
		}
		catch ( RuntimeException ex )
		{
			logger.log( ILogger.ERROR,