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biopalette 0.2.2

Current release: August 2026

Maintenance

• Replaced relative README links with stable GitHub URLs for CRAN checks.

biopalette 0.2.1

Current release: August 2026

Maintenance

• Fixed CRAN DESCRIPTION wording by quoting the software name 'ggplot2'.
• Compressed the package logo without changing its dimensions.

biopalette 0.2.0

Current release: August 2026

New features

• Redesigned palette storage and validation around the JSON palette contract.
• Added palette_info() for inspecting one palette’s metadata and colors.
• Added scale_color_biopalette() and scale_fill_biopalette() for discrete ggplot2 scales.
• Added scale_color_biopalette_gradient() and scale_fill_biopalette_gradient() for sequential and diverging gradients.
• Expanded the test suite across palette storage, color conversion, plotting, scales, and startup behavior.

Palettes

• Added mitonuclear_blue and mitonuclear_orange — sequential palettes inspired by mito-nuclear communication research (TIBS, 2022).
• Added heat_light — qualitative, 2 colors, from a bond ampholysis illustration (Nature, 2024).
• Added tam_pastel — qualitative, 6 colors, from the pan-cancer myeloid atlas (Cell, 2021).
• Added cancer_mosaic — qualitative, 15 colors, from the pan-cancer myeloid atlas (Cell, 2021).
• Added lactate_steps — qualitative, 5 colors, from lactate metabolism and immunotherapy research (JECCR, 2024).
• Added bcell_atlas — qualitative, 7 colors, from a pan-cancer B-cell atlas graphical abstract (Cell, 2024).
• Added bcell_atlas2 — diverging, 5 colors, encoding the IgA-to-IgG shift in the same source article.
• Added bcell_clusters — qualitative, 20 colors, reconstructed from Figure 1B of the same pan-cancer B-cell atlas; the published order puts broadly useful major-group colors first.
• Added source images, curation records, previews, and showcase figures for the new palettes.

Documentation and integrations

• Reworked the English and Chinese guides around qualitative, sequential, and diverging use cases.
• Added a Tessera workflow vignette and linked biopalette to Tessera and Palette Lab.
• Expanded README and pkgdown palette tables with recommended use cases and figure showcases.
• Updated palette curation templates and source records for the image-inspired collection.

Maintenance

• Aligned package, coverage, and build configuration with the redesigned palette storage model.

biopalette 0.1.0

Initial release: April 2026

The initial release established the package API for retrieving, previewing, organizing, and applying image-inspired color palettes in biomedical visualization.

Core functionality

• get_palette() — retrieve colors by name, type, and size.
• list_palettes() — inspect the bundled palette collection.
• palette_gallery() — render a paged visual gallery.
• preview_palette() — draw palette swatches in several styles.
• create_palette() and remove_palette() — manage palette JSON files.
• hex2rgb() and rgb2hex() — convert HEX and RGB color values.

Initial palette collection

• gene_red — qualitative, 2 colors, inspired by Better Call Saul.
• walter_white, walter_white2, and walter_white3 — qualitative and diverging palettes inspired by Breaking Bad.
• babel — qualitative, 21 colors, from a pan-cancer myeloid atlas (Cell, 2021).
• three_body — qualitative, 3 colors, from the same myeloid atlas.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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