* @return The location (never <code>null</code>).
*
* @see #setDomainAxisLocation(int, AxisLocation)
*/
public AxisLocation getDomainAxisLocation(int index) {
AxisLocation result = null;
if (index < this.domainAxisLocations.size()) {
result = (AxisLocation) this.domainAxisLocations.get(index);
}
if (result == null) {
result = AxisLocation.getOpposite(getDomainAxisLocation());