Where to find the coordinates for a spawn location

[JeanPhilippeMonteuuis]

Hello,

My goal is to spawn the ego-vehicle at a specific location in Town07 (e.g., singleTown07_carla). In the picture, the red dot is the spawn position. The blue dot is the destination.

I do not understand where/how to retrieve the coordinates used in spawn_position and destination (see lines below)

scenario: single_cav_list: # this is for merging vehicle or single cav without v2x

• <<: *vehicle_base spawn_position: [600, 51, 50, 0, 0, 0] destination: [600, 145.51, 50]

I have tried to use the x, y , z coordinates provided in the Unreal Engine Editor but it seems off. Can you provide me some guidance or an example?

Thank you!

[DerrickXuNu]

Thanks for using OpenCDA! I am a little confused about your question. What do you mean "it seems off"?

[JeanPhilippeMonteuuis]

Hey @DerrickXuNu , Thank you for your reply.

I would like to understand: How/Where do you pick x,y,z for spawn_position (red dot in the figure) and destination (blue dot in the figure) to fit my case (figure above)?

About "It seems off", it means to retrieve x,y,z coordinates:

• I open the Unreal Editor
• I load the Town07 (in Unreal Editor)
• I check the x,y,z coordinates of an asset near my spawn_position (red dot) and my destination (blue dot).
• Back to OpenCDA, I enter the x,y,z coordinates inspawn_position and destination
• I launch my custom OpenCDA scenario (e.g., python opencda.py -t single_town07_carla -v 0.9.12 --apply_ml)
• The carla server is loaded
• However, I do not see the car.

[DerrickXuNu]

Thanks for clarifying your question.

How/Where do you pick x,y,z for spawn_position (red dot in the figure) and destination (blue dot in the figure) to fit my case (figure above)? --> I used UE4Editor (build froun source version) to find the available spawn points.

It seems off -> there are several things you want to try: 1) Make sure you set the spectator to the vehicle you spawn, so that the CarlaUE4 will focus on it automatically 2) Tune the Z value. It maybe your Z is too low so it can not spawn. 3) Check whether there is some error message when you start your script