Hi, was trying to work out the easiest way of adding a radial line from centre of the plotly pie graph to the outside as an annotation.
I am trying to annotate a percentage donut chart with benchmarks, see attached. I have been trying to do with with the plotly.js Shapes but am finding it a bit custom to do this, and wondered if there was an obvious method I am missing to achieve this. See the Super Skin and IAB annotations on the attached image.
I tried to simplify this example by (for starters) plotting a line from the centre of the pie to the cirumference, at a specific angle, but am finding it hard.