The value of this property is expressed as a fractional value between 0 and 1 which represents the ratio of the offset to the height of the associated chart element.
For example, a value of 0 positions the title as close as possible to the edge of the associated chart element; a value of 1 positions it as close as possible to the opposite edge. All values in between 0 and 1 represent a scalar which, when applied to the height of the entire chart element, yields the offset.
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+