Visual element of legend entry with appropriate style to a slice color it corresponds. The content of each legend marker is the same as info popup appearing while hovering on slice.
Marker position relative to textValid values:
Line color around marker shape
Specifies the shape for markers in the legend. If the value is
null then the small icon representing the series is drawn.
- circle - draws circles
- square - draws rectangles
- rhombus - draws rhombus (diamonds)
- triangle - draws triangles, pointing up
- triangle2 - draws triangles, pointing down