AnnotationPolar
ViewPolar.Annotations are similar to ViewXY’s Annotations (see AnnotationXY) with the exception of Target and Location being defined in Polar axis values (note, AxisValues is using [amplitude,angle] coordinate system, but ScreenCoords still using 2D [x,y]). Sizing by axis values is not suitable and therefore Sizing property has only values Automatic and ScreenCoordinates.

An annotation in Polar view.
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To see Annotation Polar demonstration as example, check ExamplePolarVectors from our Demo.