Bug 211773 Legend entries overlap
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
{
			dY = loa[0].getY( );
			for ( int i = 1; i < iCount; i++ )
			{
				dY = Math.min( dY, loa[i].getY( ) );
			}
		}
		else if ( iProperty == IConstants.MAX )
		{
			dY = loa[0].getY( );
			for ( int i = 1; i < iCount; i++ )
			{
				dY = Math.max( dY, loa[i].getY( ) );
			}
		}
		else if ( iProperty == IConstants.AVERAGE )
		{
			for ( int i = 0; i < iCount; i++ )
			{
				dY += loa[i].getY( );
			}
			dY /= iCount;
		}
		return dY;
	}
	/**
	 * Finds particular X value from given location list.
	 * 
	 * @param loa
	 *            Location list.