[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-nvidia-i4h-lerobot-viz":3,"mdc-u4suui-key":34,"related-repo-nvidia-i4h-lerobot-viz":1562,"related-org-nvidia-i4h-lerobot-viz":1668},{"slug":4,"name":4,"fn":5,"description":6,"org":7,"tags":11,"stars":23,"repoUrl":24,"updatedAt":25,"license":26,"forks":27,"topics":28,"repo":29,"sourceUrl":32,"mdContent":33},"i4h-lerobot-viz","visualize LeRobot datasets in browser","Serve the LeRobot HTML visualizer for a converted dataset in a browser. 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Use when asked to visualize, inspect, or open a LeRobot dataset; not for converting HDF5 (use [[i4h-workflow-dataset-convert]]).\nlicense: Apache-2.0\nmetadata:\n  author: \"Isaac for Healthcare Team \u003Cisaac-for-healthcare-support@nvidia.com>\"\n  tags:\n    - isaac-for-healthcare\n    - i4h\n    - lerobot\n    - visualization\n    - dataset\n---\n\n# i4h Workflow — LeRobot Viz\n\n## Purpose\n\nServe the LeRobot HTML visualizer for a converted dataset in a browser. Use when the user asks to visualize, inspect, or open a LeRobot dataset.\n\n## Base Code\n\nThese steps drive the i4h-workflows base code (the `workflows\u002Fagentic\u002F` tree). To reuse an existing checkout, set `I4H_WORKFLOWS` to its path (no clone happens). Otherwise this resolves the current repo, or clones to `~\u002Fi4h-workflows` — pick that default without prompting. Run every command below from the resolved root:\n\n```bash\n# Resolve the i4h-workflows base code (provides workflows\u002Fagentic\u002F).\nROOT=\"${I4H_WORKFLOWS:-$(git rev-parse --show-toplevel 2>\u002Fdev\u002Fnull)}\"\nif [ ! -d \"$ROOT\u002Fworkflows\u002Fagentic\" ]; then\n  ROOT=\"${I4H_WORKFLOWS:-$HOME\u002Fi4h-workflows}\"\n  [ -d \"$ROOT\u002Fworkflows\u002Fagentic\" ] || git clone https:\u002F\u002Fgithub.com\u002Fisaac-for-healthcare\u002Fi4h-workflows \"$ROOT\"\nfi\nexport I4H_WORKFLOWS=\"$ROOT\"; cd \"$ROOT\"\n```\n\n## Basics\n\n- Input is a converted LeRobot dataset directory containing `meta\u002Finfo.json`.\n- Use for visual checks after conversion or video augmentation.\n\n## Run\n\nRun the steps below in order. Each step is a separate bash call; variables persist in the local agent's tmux session.\n\n### Step 1 — setup and resolve dataset\n\n```bash\nREPO_ROOT=\"${I4H_WORKFLOWS:-$(git rev-parse --show-toplevel 2>\u002Fdev\u002Fnull)}\"; [ -d \"$REPO_ROOT\u002Fworkflows\u002Fagentic\" ] || REPO_ROOT=\"$HOME\u002Fi4h-workflows\"\nRUNS_ROOT=\"${REPO_ROOT}\u002Fworkflows\u002Fagentic\u002Fruns\"\n\n# Point DATASET_DIR at a converted LeRobot dataset dir (absolute; must contain meta\u002Finfo.json),\n# produced by [[i4h-workflow-dataset-convert]]. List candidates:\n#   find \"${RUNS_ROOT}\" \"${HF_LEROBOT_HOME:-$HOME\u002F.cache\u002Fhuggingface\u002Flerobot}\" -name info.json -path '*\u002Fmeta\u002F*' -printf '%h\\n' | sed 's#\u002Fmeta$##' | sort -u\nDATASET_DIR=\"${DATASET_DIR:-}\"\nif [ ! -f \"${DATASET_DIR%\u002F}\u002Fmeta\u002Finfo.json\" ]; then\n  echo \"viz: set DATASET_DIR to a LeRobot dataset dir with meta\u002Finfo.json (got '${DATASET_DIR:-\u003Cunset>}'). Candidates:\" >&2\n  find \"${RUNS_ROOT}\" \"${HF_LEROBOT_HOME:-$HOME\u002F.cache\u002Fhuggingface\u002Flerobot}\" -name info.json -path '*\u002Fmeta\u002F*' -printf '%h\\n' 2>\u002Fdev\u002Fnull | sed 's#\u002Fmeta$##' | sort -u | head\n  exit 1\nfi\n\nRUN_DIR=\"${RUNS_ROOT}\u002Fviz_$(date +%Y%m%d_%H%M%S)\"\nmkdir -p \"${RUN_DIR}\u002Flogs\" \"${RUN_DIR}\u002Fviz_state\"\nln -sfn \"${RUN_DIR}\" \"${RUNS_ROOT}\u002F.latest\"\n```\n\n### Step 2 — serve visualizer\n\n```bash\n\"${REPO_ROOT}\u002Fworkflows\u002Fagentic\u002Fdataset\u002Fviz.sh\" \"${DATASET_DIR}\" \\\n  --state-dir \"${RUN_DIR}\u002Fviz_state\" \\\n  2>&1 | tee \"${RUN_DIR}\u002Flogs\u002Fviz.log\"\n```\n\n## Notes\n\n- The dataset path must be absolute. `viz.sh` treats relative paths as Hugging Face repo ids and looks them up under `~\u002F.cache\u002Fhuggingface\u002Flerobot\u002F\u003Cpath>`.\n- Override `--state-dir` only when the caller provides one.\n\n## Verify\n\n- The visualizer prints a local URL (e.g. `http:\u002F\u002F127.0.0.1:9090\u002F`).\n- Videos and joint timelines load in the browser.\n\n## Prerequisites\n\n- Workflow set up via [[i4h-workflow-setup]] (the `.venv` must exist).\n- A converted LeRobot dataset directory containing `meta\u002Finfo.json` (see [[i4h-workflow-dataset-convert]]).\n- An absolute path to that dataset directory.\n\n## Limitations\n\n- Input must be a converted LeRobot dataset directory with `meta\u002Finfo.json`; intended for visual checks after conversion or video augmentation.\n- The dataset path must be absolute; `viz.sh` treats relative paths as Hugging Face repo ids and looks them up under `~\u002F.cache\u002Fhuggingface\u002Flerobot\u002F\u003Cpath>`.\n- Override `--state-dir` only when the caller provides one.\n\n## Troubleshooting\n\n- **Error:** `.venv` not found \u002F module import fails - Cause: workflow not set up. Fix: run [[i4h-workflow-setup]] first.\n- **Error:** dataset resolved as a Hugging Face repo id \u002F not found - Cause: a relative dataset path was passed. Fix: pass the absolute path to the dataset directory.\n- **Error:** no `meta\u002Finfo.json` - Cause: directory is not a converted LeRobot dataset. Fix: convert first with [[i4h-workflow-dataset-convert]].\n- **Error:** address\u002Fport already in use - Cause: a visualizer is already serving that local URL. 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Each step is a separate bash call; variables persist in the local agent's tmux session.",{"type":49,"tag":489,"props":490,"children":492},"h3",{"id":491},"step-1-setup-and-resolve-dataset",[493],{"type":55,"value":494},"Step 1 — setup and resolve dataset",{"type":49,"tag":107,"props":496,"children":498},{"className":109,"code":497,"language":111,"meta":112,"style":112},"REPO_ROOT=\"${I4H_WORKFLOWS:-$(git rev-parse --show-toplevel 2>\u002Fdev\u002Fnull)}\"; [ -d \"$REPO_ROOT\u002Fworkflows\u002Fagentic\" ] || REPO_ROOT=\"$HOME\u002Fi4h-workflows\"\nRUNS_ROOT=\"${REPO_ROOT}\u002Fworkflows\u002Fagentic\u002Fruns\"\n\n# Point DATASET_DIR at a converted LeRobot dataset dir (absolute; must contain meta\u002Finfo.json),\n# produced by [[i4h-workflow-dataset-convert]]. 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