What could the collected points be used for when we solve questions?

Question

What are the points used for?

Answer 1

A set of points could be used for a lot of things. The examples in most of the Sololearn courses were obviously for educational purposes but point information is very practical for many problems.

Here are a couple ways point information could be used:
- 3D point sets information can be used to build a 3D polygonal mesh. Here is a video on how to do that: https://www.youtube.com/watch?v=X1170OkA0Zw
LiDAR sensors that are sometimes used by some modern cars create 3D point clouds that car computers analyze to find obstacles.
- If 2 photos are made at the same time next to each other, points from those images can be processed, compared and matched. The distance between corresponding points can estimate distance to the 3D point in front of both cameras. In other words, the 2D points from 2 carefully taken photos can be processed into 3D point cloud which can then be converted to a 3D mesh.

I made a few examples for visualizing 3D point clouds here:
https://code.sololearn.com/Wa24A58a16a2
and here:
https://code.sololearn.com/Wa13A20A31A3