NEWS

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plotcli 0.3.0

New Geom Handlers

• 11 new geom handlers bringing total support from 16 to 27 geoms: geom_step, geom_abline, geom_ribbon, geom_errorbar, geom_linerange, geom_pointrange, geom_crossbar, geom_rug, geom_label, geom_raster, geom_violin

• Violin plots: Proper mirrored density rendering using violinwidth for accurate shape computation

Bug Fixes

• Fixed division by zero when plotting constant data values (e.g., all y-values identical) - both root cause fix in get_min_max() and defensive guard in normalize_data() (Closes #1)

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plotcli 0.2.0 (2025-11-27)

Major New Features

Enhanced ggplotcli: Universal ggplot2 Converter

The ggplotcli() function has been completely rewritten to render any ggplot2 plot in the terminal:

• 16 Supported Geoms: geom_point, geom_line, geom_path, geom_bar, geom_col, geom_histogram, geom_density, geom_smooth, geom_area, geom_segment, geom_hline, geom_vline, geom_rect, geom_text, geom_boxplot, geom_tile

• Legend Support: Automatic legends for color and fill aesthetics

• Faceting Support: Both facet_wrap() and facet_grid() work automatically

• Theme Auto-Detection: Automatically respects ggplot2 themes - theme_bw() adds borders and grids, theme_classic() shows only borders, etc.

• Multiple Canvas Types:

  • braille: Highest resolution using Unicode Braille patterns (2x4 dots per character)
  • block: Medium resolution using block elements
  • ascii: Basic ASCII characters for maximum compatibility

• Styling Options: Configurable borders, grid lines, titles, subtitles, captions, and axis labels

Boxplot Rendering

• New boxplot_style parameter: "ascii" (box-drawing characters) or "braille"
• Renders whiskers, box (Q1-Q3), median line, and outliers
• Perfect centering of whiskers and outliers

Optimized Color Mapping

• Intelligent color assignment minimizes repetition across groups
• 6 groups get 6 distinct terminal colors
• 8+ groups use all available colors before repeating
• Colors sorted by hue for visual consistency

Canvas Abstraction Layer

New R6-based canvas system providing:

• Pixel-level drawing primitives (points, lines, rectangles, circles, polygons)
• Automatic Braille character composition for smooth curves
• Support for colored output via ANSI escape codes

Geom Registry

Extensible system for adding custom geom handlers, making it easy to add support for additional ggplot2 geoms.

Heatmap Support

• New geom_tile handler for rendering heatmaps
• Works with continuous color scales (scale_fill_gradient, scale_fill_viridis_c, etc.)
• Supports faceted heatmaps with facet_wrap() and facet_grid()

Improvements

• Improved Braille bit mapping for more accurate scatter and line plots
• Better color handling for multi-group aesthetics
• Fixed issues with quosure parsing in aesthetic mappings
• Fixed axis label formatting (0 now displays as "0", not "0.0e+0")
• Fixed border overlap issue - data no longer appears on/within borders
• Fixed is_braille error with ANSI color codes

Bug Fixes (Latest)

• Fixed geom_density not showing distinct colors when using fill aesthetic
• Fixed heatmap legend colors not matching plot colors (legend colors now included in color mapping for consistency)
• Fixed colors not appearing in non-interactive R sessions (Rscript) by enabling crayon colors automatically on package load
• Fixed discrete x-axis labels showing numeric positions instead of category names

Documentation

• Comprehensive vignette: "ggplotcli: Universal ggplot2 to Terminal Plotting"
• Showcase examples demonstrating maximum complexity plots

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plotcli 0.1.0 (2024-04-24)

• Initial CRAN release
• Basic terminal plotting with plotcli R6 class
• Support for scatter, line, bar, and box plots
• Basic ggplotcli() function for ggplot2 conversion