Reference and Anchor Points

For placing plot embellishments on a figure, we distinguish between two points: a point somewhere on the figure (reference point) and a point on the feature (anchor point). Four parameters are used to set and adjust these two points:

• position: a point somewhere on the figure corresponding to position_type.

• position_type: how to specify position. Choose between

  • "inside" / "outside": inside / outside the plot bounding box using the justification codes,

  • "mapcoords": map coordinates,

  • "plotcoords": plot coordinates optionally with a unit,

  • "boxcoords": normalized (0-1) coordinates corresponding to the bounding box.

• anchor: a point on the feature specified using the justification codes.

• anchor_offset: offset the anchor point by dx and dy from the reference point.