Cannot copy sequence with size 4 to array axis with dimension 3

[huckl3b3rry87]

After fixing several issues in the pipeline, I get this

[ INFO] [1571772815.804430990, 1571098005.473352630]: object_completion_topic: depth 0 

[ INFO] [1571772815.804484785, 1571098005.473352630]: waitForServer()

[ INFO] [1571772815.804565577, 1571098005.473352630]: sendGoalAndWait()

[INFO] [1571772815.809312, 1571098005.483454]: Received Completion Goal
[ERROR] [1571772815.815073, 1571098005.483454]: Exception in your execute callback: cannot copy sequence with size 4 to array axis with dimension 3
Traceback (most recent call last):
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/actionlib/simple_action_server.py", line 289, in executeLoop
    self.execute_callback(goal)
  File "/root/pc_scene_completion_ws/src/pc_object_completion_cnn/scripts/shape_completion_server/mesh_completion_server.py", line 109, in completion_cb
    goal.partial_cloud)
  File "/usr/local/lib/python2.7/dist-packages/curvox/cloud_conversions.py", line 57, in cloud_msg_to_np
    out[count] = point

and I tried https://github.com/jvarley/curvox and https://github.com/CRLab/curvox

@jvarley and @DavidWatkins do either of you have any ideas why this is not working? Since I am just guessing at the appropriate Curvox package to use , I figured that this may be the issue. It is failing here

I will try to use the recently added CURVOX repo

[DavidWatkins]

What version of Python are you using? I updated the curvox package to use python3 and ideally that's what you should be using moving forward. It looks like you are trying to use python2.7 in your environment.

[margaritaG]

@huckl3b3rry87 The issue is that you are sending a goal partial_cloud consisting of points that have a point type with four fields (e.g. "x", "y", "z", "rgb").

However, the failing curvox function expects only three fields ("x", "y", "z").

Take a ros pointclud message and convert it to
    an nx3 np ndarray.

from here.

The solution is to filter the fields of the goal partial_cloud before sending it to only retain the "x", "y", "z" fields.