I am developing a WRobot plugin that assists in making granular edits to Vector3 paths while in-game.  Right now I can add nodes, delete nodes, reposition existing nodes, and display the complete Vector3 path overlay in the client using Radar3D.DrawLine() and Radar3D.DrawCircle():

 

I would like to draw my path to the WRobot map the same way that the Gatherer Profile Editor does.

Is this possible to do from within a plugin?

I believe there's a minimap function similar to Radar3D. 
Look into UserControlMinimap and MiniMapGenerator.

Hi, good job. To draw on map you need to use https://wrobot.eu/byme/doc/html/F-wManager.Wow.Forms.UserControlMiniMap.LandmarksMiniMap.htm (it will also draw on 3d radar)

Fantastic!  UserControlMiniMap does exactly what I was looking for.  This works great!  Thank you both.