Bug 314190 The outline works differently for scatter chart and line chart when the series palette use Pattern [13]
chart/org.eclipse.birt.chart.engine.extension/src/org/eclipse/birt/chart/extension/render/Scatter.java
{
							continue;
						}
						pindex = getPreviousNonNullIndex( i, dpha );
						if ( pindex == -1 )
						{
							continue;
						}
					}
					else
					{
						if ( isNaN( dpha[i].getOrthogonalValue( ) ) )
						{
							continue;
						}
						if ( i > 0 && isNaN( dpha[i - 1].getOrthogonalValue( ) ) )
						{
							continue;
						}
						pindex = i - 1;
					}
					
					
					
					if ( loaShadow == null )
					{
						loaShadow = new Location[2];
						loaShadow[0] = goFactory.createLocation( faX[pindex]
								+ positionDelta.getX( ), faY[pindex]
								+ positionDelta.getY( ) );