Visualization import error🐛

Description

Hello, I have just installed MARO using pypl, followed the quick example, but when running the visualization command maro inspector dashboard --source_path ./dump_data/snapshot_dump_folder I get the following error:

ModuleNotFoundError: No module named 'maro.cli.maro_real_time_vis.back_end'

Screenshots

To Reproduce

Steps to reproduce the behavior:

1. Install MARO using pypl
2. Run the quick example
3. Run the visualization command maro inspector dashboard --source_path ./dump_data/snapshot_dump_folder

Expected Behavior

Environment

• MARO version (e.g., v0.1.1a1): 0.2.1a1
• MARO scenario (CIM, Citi Bike): CIM
• MARO component (Simulation, RL, Distributed Training):
• Orchestration platform (GraSS on Azure, AKS on Azure):
• How you installed MARO (pip, source): pip
• OS (Linux, Windows, macOS): Linux
• Python version (3.6, 3.7): 3.7
• Docker image (e.g., arthursjiang/maro:cpu[5f36ed]):
• CPU/GPU:
• Any other relevant information:

Additional Context

[Meroy9819]

To fix the code mentioned here one might do the following:

from maro.simulator import Env
from maro.simulator.scenarios.cim.common import Action

env = Env(scenario="cim",
          topology="toy.5p_ssddd_l0.0",
          start_tick=0,
          durations=100,
          options={"enable-dump-snapshot": "./dump_data"})
env.reset()

metrics, decision_event, is_done = env.step(None)
action = Action(0, 0, 0, 0)

while not is_done:
    metrics, decision_event, is_done = env.step(action)

print(f"environment metrics: {env.metrics}")

Indeed, env.reset() will call the code necessary to start the visualization process. Of course, when you will launch maro inspector an error will show for the intra-epoch visualization (since it is a single epoch). However, inter-epoch visualization works correctly.

Thanks for your support! Your advice has been updated to the project.

[cpn]

It seems that using the quick start example here with the addition of the options parameter from above and the missing action_type parameter, the directory is filled now and I could use the visualization command. Thanks for the help!