Bug 152898 Error Bar Chart
Version: 3.2.0 Build id: I20060602-1317 The option of chart sometimes works ok, but sometimes it has the following error:
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
* 
	 * @param xs
	 * @param la
	 * @param iLabelLocation
	 * @return
	 * @throws ChartException
	 */
	final protected boolean[] checkTickLabelsVisibility( IDisplayServer xs,
			Label la, int iLabelLocation ) throws ChartException
	{
		boolean[] ba = new boolean[daTickCoordinates.length];
		boolean vis = la.isSetVisible( ) && la.isVisible( );
		Arrays.fill( ba, vis );
		
		baTickLabelStaggered = new boolean[daTickCoordinates.length];
		boolean staggerEnabled = isAxisLabelStaggered( );
		
		if ( !vis )
		{
			return ba;
		}
		
		if ( iLabelShowingInterval >= 2 )
		{
			for ( int i = 0, c = 0; i < ba.length; i++ )
			{
				ba[i] = ( i % iLabelShowingInterval == 0 );
				if ( staggerEnabled && ba[i] )
				{
					c++;