docs: add a Scalebars tutorial#12
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A focused tutorial on drawing physical scalebars via the scalebar_* arguments of .pl.show(), on the synthetic blobs dataset: - scalebar_dx (the one required piece) and why it's needed: SpatialData coordinate systems carry no unit metadata, so you supply the physical size of one axes-unit. - scalebar_units and automatic magnitude scaling (um -> mm). - styling via scalebar_params (placement, colour, box, length_fraction, scale_loc, fonts) - forwarded verbatim to matplotlib-scalebar. - fixed_value for an exact bar length. - cross-links the Visium example for a real-data figure. Wired into the gallery: card in tutorials/index.md (inside the gallery-cards markers, root-relative paths) + toctree entry + thumbnail. Addresses part of scverse/spatialdata-plot#463.
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📖 Docs preview: https://scverse.org/spatialdata-plot-notebooks/pr-12/gallery.html Built from 8bfdc87; redeployed on every push. |
… cells Those two cells set color="white" but relied on matplotlib-scalebar's default white box, so the bar landed on the box and vanished. Give them a translucent dark box (box_color/box_alpha), and add a note to the appearance section that white bars on a dark image need a dark box or frameon=False.
- Prose pass on the scalebar tutorial markdown cells. - Regenerate the gallery thumbnail from the notebook's final plot: no title/axes, landscape ~1.11 ratio to match the sibling cards. - CONTRIBUTING: reference assets by the submodule-mount paths (absolute /notebooks/... for index.md cards, relative ../ from notebook cells). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- New §5 demonstrating a vertical bar (`rotation`) and a custom bar title (`label`/`label_loc`); old wrap-up renumbered to §6. - Regenerate the gallery thumbnail from this final plot: vertical 100 µm bar with a "scale" label, landscape ~1.11 to match the sibling cards. - Re-executed end-to-end so committed outputs are current. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Adds a Scalebars tutorial to the
tutorials/gallery.