Hi am working on the building environment for drone, i have .obj mesh files of cities but when i upload in gazebo it doesn’t fit in grid of gazebo cells but I can’t find it anymore about how to have a own map without side boundaries !! Just mesh on certain fix area (m2).
I dont quite understand your issue.
You say that when importing a mesh of a city it doesnt appear in gazebo?, that the scale is wrong? That it goes ouside the default grid ( which isnt important ).
What do you mean by boundaries? In theory with a custom mesh, the boundaries will be given by the mesh you import.
Please post some images to have a better understanding of your issue ;).