Feature: Auto-share default with compatibility-aware grouping#560
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cvanelteren merged 38 commits intomainfrom Feb 11, 2026
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Feature: Auto-share default with compatibility-aware grouping#560cvanelteren merged 38 commits intomainfrom
cvanelteren merged 38 commits intomainfrom
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beckermr
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Feb 11, 2026
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Mar 22, 2026
…lot#560) This PR adds compatibility-aware auto sharing for subplot axes so mixed axis families (e.g., cartesian + polar/geo) no longer produce avoidable sharing warnings or incorrect sharing side effects by default. ## Why this change UltraPlot’s sharing model has explicit levels (`0` to `4`), but real figures often mix projections and axis types that are not compatible for full sharing. Previously, default sharing behavior could still attempt incompatible sharing, which led to noisy warnings and confusing outcomes. ## What this PR changes - Adds `share='auto'` as a first-class sharing mode in figure/subplot parsing and docs. - Keeps existing explicit levels (`0..4`, aliases) fully supported and unchanged in intent. - In auto mode, sharing starts from level-3 semantics but only applies within compatible axis groups. - Introduces compatibility checks used before sharing: - axis family/class compatibility - scale compatibility - units/converter compatibility - projection-related compatibility - Partitions candidate shared axes into compatible groups, then shares per group. - Deduplicates incompatible-share warnings so users see concise diagnostics instead of repeated noise. - Updates cartesian `set_xscale` / `set_yscale` flow to unshare + refresh in auto mode when scale changes would invalidate compatibility. - Documents auto-sharing behavior and mixed-axis examples in `docs/subplots.p`. --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
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Summary
This PR changes default subplot sharing to a compatibility-aware
share='auto'mode, while preserving explicit share levels (0..4, aliases) as hard overrides.The goal is to avoid noisy/inaccurate default sharing for mixed axis families (for example cartesian + polar) and to keep expected shared behavior for compatible grids.
Design Changes
share='auto'inFigure(sharex/sharey/share).xscale/yscale)False/0,labels/1,limits/2,True/3,all/4):Behavioral Expectations
subplots.share='auto'):share='all', etc.):Tests Added
Docs Updated
sharex/sharey/sharenow documents'auto'and explicit override semantics.'auto'and includes a mixed cartesian/polar example.Out of Scope