Rerun Files

Rerun is an easy-to-use database and visualization toolbox for multimodal and temporal data.

• Python: pip install -U rerun-sdk
• Rust: cargo add rerun and cargo install rerun-cli --locked
• C++ FetchContent: https://github.com/rerun-io/rerun/releases/download/0.42.0/rerun_cpp_sdk.zip
• Online demo: https://rerun.io/viewer

---

✨ Overview & highlights

• New Raw Data view to inspect an entity's components, including nested fields and individual instances

<picture> </picture>

• Schema tab for datasets, showing the combined schema of all layers as a searchable entity tree

<picture> </picture>

• Hovering a tensor in the tensor view shows a zoomed preview and the value of the element under the cursor

• Give table columns semantic meaning with Component.table_field(), optionally editable without a table blueprint
• Layer.schema() and DatasetSelection.info() in the Python catalog API
• Catalog folders have clickable breadcrumbs, and folders and tables can copy a link to themselves
• Layer names show as tags in segment tables
• Repeated notifications merge into one
• The gRPC server and proxy accept browser connections from rerun.io subdomains by default

📖 Release notes: https://rerun.io/docs/changelog/changeset-0-42#highlights

⚠️ Breaking changes

• DatasetSelection.schema() covers only the selected segments (rerun.io)

🧳 Migration guide: https://rerun.io/docs/changelog/changeset-0-42#breaking-changes

🔎 Details

🐍 Python API

• Better table schema API 6001efd
• Add layer.schema() 022859f
• Add selection.info() to DatasetSelection 86f9bc9
• DatasetSelection.schema now takes into account the segment selection 826dc6e

🦀 Rust API

• Update arrow_rs to 58.4.1 a38ef38

🪳 Bug fixes

• Don't crash the headless viewer on characters no font can draw #12980 (thanks @jaeminbird!)
• Don't panic on broken pipe 13efe4d
• Draw 2D points above lines again by default a235fbc
• Smoother Ellipses2D outlines when zoomed in #12988 (thanks @michele-xilo!)
• Pass --time_timestamp_nanos to external importers for timestamp timelines d98777b
• Return InvalidArgument when registering a non-RRD file 7e5529e
• Classify all RRD decode errors from user files as client errors a6175b1
• Fix welcome screen flicker while the viewer connects to a server 43e7161
• Align catalog breadcrumbs with the title below them 8ae43b7
• Show item tooltips in the selection history menu 544c33d
• Fix invisible play/pause icon on table previews in light mode 4f16dff
• Keep selected text readable in text edits cd45097
• Center value toggles correctly 0bb3b58

🌁 Viewer improvements

• Add new Raw Data view c2e5b74
• Dataset Schema Tab d6de728
• Make dataset folder paths clickable with breadcrumbs 131096b
• Add "Copy link to folder" to folder context menu 28021de
• Layer names component UI 0a4c196
• Merge repeated notifications into one 8e02bd4

🚀 Performance improvements

• Store uncompressed chunks where optimal f63cf29
• dataloader: Skip copying the first use of each decoded video frame 8217e81

🖼 UI improvements

• Support tensor hover previews ee88e60

🕸️ Web

• Allow rerun.io subdomains in the default gRPC CORS allowlist 0dbaf30