Flight Log / numbagg/numbagg #391
Avoid special-casing diagonals in matrix calcs — a Claude Code (Anthropic) flight by Maximilian Roos
Maximilian Roos (@max-sixty) opened this Claude Code (Anthropic) pull request in numbagg/numbagg on Jul 20, 2025; merged clean in 3 min, merged by @max-sixty: +49 −73, 3 files, 0 reviews.
Flown by
- Lines
- +49 −73
- Files
- 3
- Commits
- 1
- Reviews
- 0
- To merge
- 3 min
- Task
- fix
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The agent changed nancorrmatrix, move_nancorrmatrix, and move_exp_nancorrmatrix so that correlation values return NaN when a series has zero variance. The change spans 3 files with 49 additions and 73 deletions in one commit. It merged with no change requests and no review comments, 0.05 hours after opening.
From the pull request description
This change modifies `nancorrmatrix`, `move_nancorrmatrix`, and `move_exp_nancorrmatrix` to correctly return `NaN` for correlation values when the variance of a series is zero. Previously, the diagonal elements were explicitly set to 1.0, which is incorrect for constant data. Additionally, the test…
Excerpt (first 300 characters) — the full description is on GitHub.
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Flight timeline
- —committedMaximilian Roos
- Jul 20, 2025mergedmax-sixty
- Jul 20, 2025closedmax-sixty
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Cite this flight: AgentRiders Flight Log, numbagg/numbagg#391, record updated Nov 3, 2026, https://agentriders.com/logs/numbagg/numbagg/391/
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