Add sparkline mode for compact table-cell charts#27
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mortonanalytics merged 1 commit intodevelopfrom Mar 28, 2026
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Adds `sparkline = TRUE` parameter to `myIO()` that renders compact, axes-free charts at 20px height — suitable for embedding in reactable, DT, and gt table cells. Strips legend, interactions, and reference lines. Supports line, bar, and area layer types. R: sparkline param on myIO(), type validation in addIoLayer() JS: applySparklineOverrides() in Chart constructor, sparkline CSS Tests: 12 R tests, 7 JS vitest tests (19 total) Docs: sparklines.Rmd vignette, NEWS.md v1.2.0 entry Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
myIO(sparkline = TRUE)for compact, axes-free charts at 20px height — ideal for embedding in reactable, DT, and gt table cellsline,bar, andarealayer types supported; others error with a clear messageWhat changed
sparklineparameter onmyIO(), type validation guard inaddIoLayer()applySparklineOverrides()in Chart constructor — sets 1px margins, suppresses legend/axes/interactions, setsdata-sparklineattributevignettes/sparklines.Rmd, NEWS.md v1.2.0 entry, updatedman/myIO.RdTest plan
devtools::test())npx vitest run)test_sparkline.R)sparkline.test.js)myIO()calls unaffected🤖 Generated with Claude Code