toolkit: add BarChart vertical bar plot#10
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The categorical companion to LineChart: plots non-negative Values as vertical bars over the same axis frame, bars sharing the plot width evenly with a 1-unit gutter and scaling to the tallest value (or an explicit Max). Zero-height bars are skipped; tiny values floor to 1px; over-Max values clamp to full height. An empty series draws just the axes. 100% coverage. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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The categorical companion to
LineChart: plots non-negativeValuesas vertical bars over the same left+bottom axis frame. Bars share the plot width evenly with a 1-unit gutter and scale to the tallest value (or an explicitMax).Zero-height bars are skipped; tiny values floor to 1px so they stay visible; values above
Maxclamp to full height. An empty series draws just the axes. Display-only.Renders through
painter.Painter. 100% coverage;go vetclean; builds on all 6 arches + js/wasm.🤖 Generated with Claude Code