vangogh 0.1.3

New Features

• Color Vision Deficiency (CVD) Assessment Tools
  • Added check_vangogh_cvd() to simulate how palettes appear under different types of colour blindness (deuteranopia, protanopia, tritanopia) with visual plots and quantitative accessibility scores.
  • Added check_all_vangogh_cvd() for batch checking all palettes and generating comprehensive CVD reports.
  • Added get_cvd_safe_palettes() to filter palettes that meet accessibility thresholds for colourblind users.
  • Added pre-computed vangogh_cvd_scores dataset for quick accessibility lookups without requiring the colorspace package.
  • Added vangogh_palette_info_with_cvd() to enhance palette information with CVD accessibility data.
  • Added print_cvd_badge() for generating markdown badges showing palette accessibility ratings.
  • Added summarize_cvd_accessibility() to create summary tables of CVD metrics across all palettes.

Implementation Details

• CVD assessment uses CIELAB color space for perceptually uniform distance calculations.
• All CVD functions use optional dependencies (colorspace) in Suggests, not Imports.
• Functions include graceful error handling for missing packages.
• Pre-computed data allows users to access CVD scores without installing colorspace.
• Migration from colorblindr to colorspace
  • Replaced deprecated colorblindr package with colorspace for CVD simulations.
  • Updated check_palette(), viz_palette(), and compare_palettes() to use colorspace::deutan(), colorspace::protan(), and colorspace::tritan().
  • Implemented manual faceted visualizations to replace colorblindr::cvd_grid() functionality.
  • All CVD simulations now use the actively maintained colorspace package available on CRAN. ## Documentation
• Added comprehensive documentation for all CVD functions with examples.
• Added 20+ unit tests for CVD functionality with proper error handling.
• All functions include @importFrom declarations for CRAN compliance. ## Bug Fixes
• Fixed namespace imports for base R functions (graphics, stats, utils).
• Improved handling of NULL parameters in palette functions.
• Enhanced error messages for missing dependencies.

vangogh 0.1.2

Major Refactor

• Major refactor of the package structure and core functionality:
  • Rewrote all R/ scripts for clarity, consistency, and CRAN compliance.
  • Deleted obsolete scripts and consolidated related functions.
  • Updated palette and theme handling to support new variants and features.

Palette Accessibility Enhancements

• palette_accessibility.R upgraded:
  • vangogh_palette_info() and vangogh_colors() now optionally return HCL hue/chroma/luminance metadata when colorspace is installed.
  • Added vangogh_suggest() to recommend palettes based on required number of colours.
  • Added vangogh_export() for exporting palettes as JSON or CSV.
  • Rewrote compare_palettes() for facet-style comparison with improved .data safety.

Theme Improvements

• theme_vangogh() now supports variants: "classic", "light", "dark", "sketch".

Functionality Updates

• safe_vangogh_palette(), viz_palette(), check_palette() refined for colourblind simulation and consistent API.
• vangogh_palette() retains discrete and continuous interpolation support.
• Added examples and updated documentation throughout man/ files.

Other

• README fully updated with new functions, examples, and badges.
• License clarified: copyright 2022 Cheryl Isabella Lim.

vangogh 0.1.1

• Initial CRAN submission.