acutronicrobotics/ros2learn

ROS 2 enabled Machine Learning algorithms

ros2learn's Issues

Error writing to csv in run_ppo2_mlp

• Branch dashing
• Env MARA-v0
• Command: python3 run_ppo2_mlp.py -g -r -v 0.3

Error

Reward:  [-0.89437598]
ee_translation[x, y, z]:  [ 0.399223   -0.09404414  0.63918883]
ee_orientation[w, x, y, z]:  [ -6.60108844e-06   1.57084723e-03  -3.76790331e-06  -1.05699059e-03]
Traceback (most recent call last):
  File "run_ppo2_mlp.py", line 126, in <module>
    csv_file.write_obs(obs[0], csv_files[0], defaults['env_name'])
  File "/home/nestor/ros2learn/experiments/examples/MARA/write_csv.py", line 16, in write_obs
    df.to_csv(f, header=obs_headers, index=False)
  File "/home/nestor/.local/lib/python3.6/site-packages/pandas/core/generic.py", line 3020, in to_csv
    formatter.save()
  File "/home/nestor/.local/lib/python3.6/site-packages/pandas/io/formats/csvs.py", line 172, in save
    self._save()
  File "/home/nestor/.local/lib/python3.6/site-packages/pandas/io/formats/csvs.py", line 274, in _save
    self._save_header()
  File "/home/nestor/.local/lib/python3.6/site-packages/pandas/io/formats/csvs.py", line 209, in _save_header
    nalias=len(header))))
ValueError: Writing 24 cols but got 12 aliases

control-msg doesn't exist error

seems in dashing, ros doesn't provide control-msgs , when build the dockerfile, it fails here.

Cannot launch Gazebo world

Hi,

I executed these commands:

cd ~/ros2learn/experiments/examples/MARA
python3 train_ppo2_mlp.py -g

However, I encounter this error and I am unable to launch the robotic arm in Gazebo. The error is as follows:

Does anyone know how to fix this issue? Your help would be greatly appreciated.