Bug 181706 Sorting Data by X values doesn't work without grouping
Using the 2.2M5 designer , I simply want to sort the data of the X Series in a Line Chart. I go into the Sort and Group pop up in the chart wizard and select ascending, but it doesn't affect the result. (style ordered same as the result set) If i define a dummy grouping (no interval) it is then working.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/internal/datafeed/DataProcessor.java
if ( iOrthogonalSeriesDefinitionCount < 1 )
		{
			fillSeriesDataSet( cwa,
					seBaseRuntimeSeries,
					rsw.getSubset( iBaseColumnIndex ) );
			
			Series seOrthogonalDesignSeries;
			Series seOrthogonalRuntimeSeries;
			SeriesDefinition sdOrthogonal;
			for ( int i = 0; i < axaOrthogonal.length; i++ ) 
			{
				elSD = axaOrthogonal[i].getSeriesDefinitions( );
				for ( int j = 0; j < elSD.size( ); j++ ) 
				
				
				{
					sdOrthogonal = (SeriesDefinition) elSD.get( j );
					seOrthogonalDesignSeries = sdOrthogonal.getDesignTimeSeries( );
					seOrthogonalRuntimeSeries = (Series) EcoreUtil.copy( seOrthogonalDesignSeries );
					
					String[] triggerExprs = getSeriesTriggerExpressions( seOrthogonalDesignSeries,
							iae );
					String aggExp = rsw.getLookupHelper( )
							.getOrthogonalAggregationExpression( sdOrthogonal );
					
					fillSeriesDataSet( cwa,
							seOrthogonalRuntimeSeries,
							rsw.getSubset( seOrthogonalDesignSeries.getDataDefinition( ),
									aggExp ),
							triggerExprs,