Visualization group

Discussion in 'Visualization' started by MJAS, Feb 11, 2019.

  1. I'm using MuJoCo via OpenAI Gym. The XML files have group=<some number> attributes. I can't find anywhere in the documentation a description of what effect each value for group has on object visibility and other behaviours. e.g. if I change the group for a site from 4 to 1, it may become visible, but will there be other consequences?
  2. Emo Todorov

    Emo Todorov Administrator Staff Member

    Groups are only used for visibility by mujoco, but you can use them for other things as well -- it is convenient way to label objects with an integer. Note that you can also define user parameters, and have more than one user parameter per object.
  3. Thanks very much. As a Gym + mujoco_py user I wasn't clear if "group" has a fixed interpretation or is user-defined. Anyway, changing the group to 1 for class="robot0:DC_Hand" had the desired effect of allowing me to see all capsules in the Hand model, so this is resolved.