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.engine/src/org/eclipse/birt/chart/model/attribute/impl/MarkerImpl.java
iconPalette = newIconPalette;
		if ( eNotificationRequired( ) )
		{
			ENotificationImpl notification = new ENotificationImpl( this,
					Notification.SET,
					AttributePackage.MARKER__ICON_PALETTE,
					oldIconPalette,
					newIconPalette );
			if ( msgs == null )
				msgs = notification;
			else
				msgs.add( notification );
		}
		return msgs;
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setIconPalette( Palette newIconPalette )
	{
		if ( newIconPalette != iconPalette )
		{
			NotificationChain msgs = null;
			if ( iconPalette != null )
				msgs = ( (InternalEObject) iconPalette ).eInverseRemove( this,
						EOPPOSITE_FEATURE_BASE
								- AttributePackage.MARKER__ICON_PALETTE,
						null,