How to get the elevation map?

[Seraen]

Hi, I am wondering how to get an elevation map from the environment, with the robot as the center and a size of 2*2 grids. Is there any function to implement?

[BluePrintRandom]

with a kdtree you can know what tile you are closest to, or the closest N tiles.

using A* you can get what tiles are connected and evaluate a cost function

[Seraen]

Thank you for answering! I would like to get the elevation information of the environment. Is there any built-in function that can do that?