Changelog

Source: NEWS.md

weird (development version)

• kde_bandwidth(method = "lookout") no longer crashes R when the data contain points that differ only by floating-point error (e.g. PCA scores of identical observations); mlpack::emst() could overflow the C stack on such near-duplicates.
• lof_scores() and glosh_scores() now use k nearest neighbours excluding the observation itself. Previously the observation itself was also included.
• lof_scores() no longer replaces infinite values by 1.

weird 3.1.0

CRAN release: 2026-09-07

• dist_kde() HDR calculations now always use the density at the data points (previously this required at least 200 observations), following hdrcde.
• dist_density() removed in favour of distributional::dist_density().
• gg_density() now labels the axis with the variable name when plotting a dist_kde object, if available.
• hdr_regions() added, showing which highest density region each observation falls in, for one or more coverage probabilities, from a univariate or bivariate dist_kde object.
• kde_bandwidth() gains method = "scv", a smoothed cross-validation bandwidth estimator using ks::hscv()/ks::Hscv().
• hampel_anomalies() gains alpha and approximation arguments, allowing anomalies to be declared using a significance level rather than a fixed number of standard deviations.

weird 3.0.0

CRAN release: 2026-07-06

• Moved the Old Faithful Geyser examples from the README into a new vignette, vignette("old-faithful").
• augment() method added for rrcov Pca* objects, returning the principal component scores, score distances and orthogonal distances, optionally alongside the original data.
• dist_mclust() added to convert a Gaussian mixture model (Mclust object) to a distributional object.
• density_df() added, converting a distributional object to a data frame containing density values over a grid, suitable for plotting.
• biplot_projection() added, drawing a two-dimensional projection of scores with the original variable axes overlaid as arrows.
• outlier_map() added, drawing the score distance against the orthogonal distance for a prcomp or rrcov Pca* object, with optional cutoff thresholds classifying observations as regular, good leverage points, orthogonal outliers or bad leverage points.
• Added fetch_air_quality() to download Beijing air quality data from 12 monitoring stations (2013-2017).
• Added gun_deaths dataset containing firearm homicide rates and gun ownership by country for 2017.
• wine_reviews columns have been reordered.
• gg_density_layer() removed,
• lof_scores() now returns 1 (instead of 0) when there are too many duplicates.
• mvscale() now better handles missing and infinite values, and returns centering and scaling terms as attributes.
• dist_kde() is now robust to missing values.
• Removed several dependencies
• Bug fixes and documentation improvements

weird 2.1.0

CRAN release: 2026-05-05

• Added surprisals() and surprisals_prob() for glm objects
• Faster calculation of surprisals_prob() for lm and gam objects
• More accurate rank-based surprisal calculation when ties and missings present
• More accurate HDR calculations
• Added covariance calculation for multivariate dist_kde objects
• Added distributional::hdr() and distributional::parameters() methods for dist_kde objects
• Faster calculation for kde_bandwidth() with method = "lookout", now using mlpack for merge distances
• mvscale() re-added to weird
• Dropped lookout package dependency
• Added lots of unit tests
• Better docs
• Bug fixes

weird 2.0.0

CRAN release: 2026-01-27

• Added fr_mortality data set
• Updated oldfaithful and cricket_batting data sets
• Refactored package to use distributional objects
• Added dist_kde() and dist_density()
• Removed as_kde() and autoplot.kde()
• Rewrote kde_bandwidth() to handle more methods
• Added gg_density() and gg_density_layer()
• Replaced density_scores() with surprisals() and added surprisals_prob()
• Updated gg_bagplot() and gg_hdrboxplot() to use show_points argument
• Removed lookout()
• Added hampel_anomalies()
• mvscale() moved to lookout package
• Dropped interpolation dependency
• No longer exporting weird_packages() and weird_conflicts()

weird 1.0.2

CRAN release: 2024-01-24

• Removed wine_reviews dataset and created fetch_wine_reviews() function.
• Bug fixes.

weird 1.0.0

CRAN release: 2024-01-12

• Initial CRAN submission.