feat: scanpy UMAP support + palette= kwarg (closes #11) - #26
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- Extend _continuous_artists to detect unlabeled/nolegend PathCollections (scanpy continuous UMAP with set_array()) - Extend _labeled_artists with no-legend fallback for scanpy categorical UMAP (multiple PathCollections per category, no ax.legend()) - Add palette: dict | None to _PanelCtx and studio() signature - Colors section shows "Custom" mode when palette= is provided; pre-fills Manual pickers from the palette dict Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Demonstrates categorical UMAP with palette= kwarg, continuous UMAP colormap controls, mixed figure, and the programmatic style API. Falls back to synthetic data when scanpy is not installed. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…API sections Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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…ion (#29) - _artists.py: _set_artist_color preserves facecolor alpha and only syncs edgecolor when originally visible — fixes color change on scanpy scatters - _opacity.py: use facecolor RGBA as alpha source of truth for PathCollection; set_alpha(None) after to prevent double-multiplication (artist×face alpha) - colors.py: remove Smart from ToggleButtons options (code preserved) - style/_ticks.py + widget/_sections/ticks.py: new Ticks section with x/y label visibility, x-tick rotation, x/y tick interval controls - scanpy_umap.ipynb: require scanpy; drop HAS_SCANPY synthetic fallbacks Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Scanpy UMAP support + palette= kwarg, plus three follow-up fixes.
Core (closes #11)
_artists.py:_continuous_artistsdetects unlabeled/_nolegend_PathCollectionwithset_array()(continuous UMAP);_labeled_artistsfalls back to direct collection scan when noax.legend()(categorical UMAP)_ctx.py/_studio.py:palette: dict[str, str] | None = Noneparameter onstudio()→ forwarded to_PanelCtxcolors.py: Custom mode whenpalette=is supplied — applies label→hex mapping, pre-fills Manual pickersPathCollection color/alpha fix (closes #27)
_set_artist_color: preserves existing facecolor alpha; only syncs edgecolor when originally visible_opacity.py: reads effective alpha from facecolor RGBA channel (not artist-level) forPathCollection; clears artist-level alpha after setting to prevent double-multiplicationSmart mode hidden (closes #28)
Ticks section (closes #29)
style/_ticks.py:set_tick_labels_visible,set_xtick_rotation,set_tick_intervalwidget/_sections/ticks.py: X/Y label On/Off toggles, x-rotation slider (0°–90°, step 15°), X/Y interval text inputsNotebook
examples/scanpy_umap.ipynb: requires scanpy (removed synthetic fallback); covers categorical UMAP +palette=, continuous UMAP colormap, heatmap, violinTest plan
pytest tests/ -q)_set_artist_colorpreserves alpha; no double-alpha afterset_series_alpha🤖 Generated with Claude Code