NEWS

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vistributions 0.2.1 (2026-10-16)

Bug Fixes

• vdist_normal_plot() now properly scales the x-axis grid to span mean ± 4 * sd (BUG-01).
• vdist_f_perc() adapts upper x-axis limit dynamically beyond 4.0 when quantiles exceed the default plotting range (BUG-02).
• vdist_t_prob() handles negative percentile values (perc <= -5) without "wrong sign in 'by' argument" sequence error (BUG-03).
• vdist_chisquare_plot() ensures shaded fill polygon coordinates match the full extent of xaxis_range (BUG-04).
• Guarded theoretical standard deviation calculation for the F distribution against division-by-zero when denominator degrees of freedom is less than or equal to 4 (den_df <= 4) (BUG-05).
• vdist_t_prob(type = "both") corrects color mapping and annotation placement so left/right shaded tails and central body match their respective regions (BUG-06).
• check_positive() now strictly enforces positive values (val <= 0), rejecting zero and negative inputs (BUG-07).
• check_suggests() formats informative error messages identifying the missing package prior to aborting execution (BUG-08).
• vdist_binom_prob() validates numeric types for n, p, and s before performing range checks (BUG-09).
• check_range() replaces bitwise | with logical || to eliminate scalar evaluation warnings in modern R (BUG-10).
• Visual test snapshot names for vdist_t_prob() interval and both types are properly aligned (BUG-11).
• Removed unprompted network polling (available.packages()) and interactive prompts during package startup in .onAttach(); retained rotating educational tips (BUG-12).
• vdist_normal_perc() scales x-axis bounds dynamically with standard deviation (BUG-13).
• vdist_binom_prob(type = "upper") strictly shades bars where x >= s (BUG-14).
• vdist_binom_prob(type = "exact") matches success counts via integer equality rather than floating-point density comparison (BUG-15).
• vdist_t_prob(type = "upper") aligns text annotation colors with polygon fill colors (BUG-16).
• Added missing positive degrees of freedom validations across t, F, and chi-square functions (BUG-17).
• F distribution normal approximation overlay is strictly clamped to non-negative support (x >= 0) (BUG-18).
• vdist_binom_perc() allows percentile input tp across the full valid range (0, 1) rather than capping at 0.5 (BUG-19).

Documentation & Vignettes

• Fixed pedagogical and numerical discrepancies in vignettes/introduction-to-vistributions.Rmd:
  • Corrected Normal 15th percentile problem cutoff (0.15 instead of 0.85).
  • Aligned Binomial sample size ($n = 12$ consistently).
  • Synchronized Chi-square question text with lower-tail probability evaluation.
  • Aligned Student's t 95% interval problem (0.95 instead of 0.8).
  • Fixed inversion of Student's t interval vs both probability examples.
  • Standardized knitr chunk options (fig.align = 'center').
  • Corrected typographic errors.
• Added explicit @return documentation across all exported plotting and calculation functions.
• Added .github/CONTRIBUTING.md, issue templates, PR template, and upgraded CODE_OF_CONDUCT.md to Contributor Covenant v2.1.

Package Hygiene & Infrastructure

• Removed stale SVG files in tests/figs/ and updated test suite to testthat 3rd edition (Config/testthat/edition: 3).
• Bumped dependency requirement to R (>= 4.1.0).
• Removed unused magrittr dependency from Imports:.
• Configured automated pkgdown website deployment via Netlify.

vistributions 0.2.0 (2024-11-07)

This is a minor release for bug fixes.

vistributions 0.1.2 (2021-05-20)

This is a patch release to fix CRAN note about lazy data.

vistributions 0.1.1 (2019-03-07)

This is a patch release to fix bugs in the app.

vistributions 0.1.0 (2018-11-30)

• Added a NEWS.md file to track changes to the package.