Bug 214197 [Regression] Auto scale does not work correctly [13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AutoScale.java
continue;
					}
					if ( cValue.before( caMin ) )
						caMin = cValue;
					else if ( cValue.after( caMax ) )
						caMax = cValue;
				}
				return new Object[]{
						new CDateTime( caMin ), new CDateTime( caMax )
				};
			}
		}
		catch ( ClassCastException ex )
		{
			throw new ChartException( ChartEnginePlugin.ID,
					ChartException.GENERATION,
					"exception.invalid.axis.data.type", 
					new Object[]{
						oValue
					},
					Messages.getResourceBundle( rtc.getULocale( ) ) );
		}
		return null;
	}
	/**
	 * Computes min, max value, step size and step number of the Axis
	 * 
	 * @param oMinValue
	 *            min value in data points. Double or CDateTime type.
	 * @param oMaxValue