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Analyze PX4 ULog file size by topic breakdown. Use when the user wants to understand what's taking up space in a .ulg log file.
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Based on SOC occupation classification
| name | profile-log |
| description | Analyze PX4 ULog file size by topic breakdown. Use when the user wants to understand what's taking up space in a .ulg log file. |
| argument-hint | <path-to-ulg-file> |
| allowed-tools | Bash(python3 *) |
Run the size profiler on the given ULog file and interpret the results.
logs/ in this repo (by filename match).~/Downloads/.logs/<log-name>/, copy the .ulg there.python3 scripts/profile_log_size.py <resolved-log-path>
logs/<log-name>/README.md catalogue entry per the convention in CLAUDE.md.Profile GPS signal quality from a PX4 ULog โ satellites, fix type, receiver accuracy, EKF innovations, stationary drift, and raw-position jitter. Supports a two-log compare mode for before/after flights (e.g. driver A/B, firmware bisects, receiver swaps). Use when the user wants to validate GPS behavior across a change.
Analyze accelerometer vibration from a PX4 ULog, compute PSDs, spectrograms, identify notch filter targets, and compare Z velocity estimation. Use when the user wants to evaluate accel vibration or tune notch filter parameters.
Analyze barometric pressure bias from a PX4 ULog โ thrust pressurization, ground effect, thermal drift, and EKF impact. Use when the user wants to investigate baro-related altitude errors, Z velocity drift, or ground effect issues.