Draw an OccupancyGrid?
Are there any ROS tools, or recommended third-party tools, for drawing a 2D grid that's output as a nav_msgs/OccupancyGrid? I could find an online grid editor that outputs to coordinates, then convert them, but I'm hoping there's an already-made tool.
I haven't used it myself, but if you have access to matlab, it would appear it has some infrastructure that could be helpful with this. See here.
There is a grid_map library. I'm using it to edit existing grid maps or creating new from scratch.