Tagged columnar updates: Python

[teh-cmc]

Implements everything needed for the new tagged send_columns in Python. This includes taking care of interactions with indicators, mono-components, etc.

def send_columns_v2(
    entity_path: str,
    indexes: Iterable[TimeColumnLike],
    columns: Iterable[ComponentColumn],
    recording: RecordingStream | None = None,
    strict: bool | None = None,
) -> None:

Points (multi-component):

# Prepare a point cloud that evolves over 5 timesteps, changing the number of points in the process.
times = np.arange(10, 15, 1.0)
# fmt: off
positions = [
    [1.0, 0.0, 1.0], [0.5, 0.5, 2.0],
    [1.5, -0.5, 1.5], [1.0, 1.0, 2.5], [-0.5, 1.5, 1.0], [-1.5, 0.0, 2.0],
    [2.0, 0.0, 2.0], [1.5, -1.5, 3.0], [0.0, -2.0, 2.5], [1.0, -1.0, 3.5],
    [-2.0, 0.0, 2.0], [-1.5, 1.5, 3.0], [-1.0, 1.0, 3.5],
    [1.0, -1.0, 1.0], [2.0, -2.0, 2.0], [3.0, -1.0, 3.0], [2.0, 0.0, 4.0],
]
# fmt: on

# At each timestep, all points in the cloud share the same but changing color and radius.
colors = [0xFF0000FF, 0x00FF00FF, 0x0000FFFF, 0xFFFF00FF, 0x00FFFFFF]
radii = [0.05, 0.01, 0.2, 0.1, 0.3]

rr.send_columns_v2(
    "points",
    indexes=[rr.TimeSecondsColumn("time", times)],
    columns=[
        *rr.Points3D.columns(positions=positions).partition(lengths=[2, 4, 4, 3, 4]),
        *rr.Points3D.columns(colors=colors, radii=radii),
    ],
)

Scalar (mono-component):

times = np.arange(0, 64)
scalars = np.sin(times / 10.0)

rr.send_columns_v2(
    "scalars",
    indexes=[rr.TimeSequenceColumn("step", times)],
    columns=rr.Scalar.columns(scalar=scalars),
)

Custom data:

timestamps = np.arange(0, 64)

# Log two component columns, named "sin" and "cos", with the corresponding values
rr.send_columns_v2(
    "/",
    indexes=[rr.TimeSequenceColumn("step", timestamps)],
    columns=rr.AnyValues.columns(sin=np.sin(timestamps / 10.0), cos=np.cos(timestamps / 10.0)),
)

• Fixes Tagged columnar updates: Python #8752

[github-actions]

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Result	Commit	Link	Manifest
✅	c4f4441	https://rerun.io/viewer/pr/8792	+nightly +main

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[teh-cmc]

@rerun-bot full-check

[github-actions]

Started a full build: https://github.com/rerun-io/rerun/actions/runs/12933512413

[teh-cmc]

Drafting: upcoming agreed-upon design changes.

[teh-cmc]

@rerun-bot full-check

[github-actions]

Started a full build: https://github.com/rerun-io/rerun/actions/runs/12954162407

[abey79]

Well done, great API improvement!

[abey79]

Any reason why these are gone from the index?

[teh-cmc]

Because it doesn't directly mention any of these components anymore (the parsing logic is very dumb).

It's fine though, it appears in the Features section already.

[teh-cmc]

Actually, now that I think about it... The entire Components section of the index should go away.