ROS Mapping question[1]

Continuing the discussion from Impressive Smartphone micro-ROS based “Thing”:

Given the following screenshot from that clip:

Am I correct in assuming that the “ray-like” areas that look like flashlight beams represent possibly open areas that have yet to be explored, (and given a defined shape?)


  1. The title must be at least 15 characters.
    So much for succinct titles. . .

A ROS sensor has a beam width, a min range and a max range. As the bot moves, the mapping program gives an occupied probability of 0 to 1, with some limit for unknown, and occupied.

The beams are sensor returns of max_range that have not been confirmed by multiple readings from a different position.

Correct - yet to be confirmed and bounded.