A unique numeric identifier for each individual instance within a batch.

Instance keys are automatically assigned by the rerun library and should not be set manually.

The instance key is just the index of the instance within the batch, i.e. the first point in a point cloud has InstanceKey = 0, the second InstanceKey = 1, and so on.

We plan to remove the InstanceKey component in the near future.


  • value: u64