NEWS

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spatstat.univar 3.2-0

OVERVIEW

• Distribution of a weighted sum of chi-squared variables.

NEW FUNCTIONS

• dsocs, psocs, qsocs, rsocs Probability density function, cumulative probability distribution function, quantile function and random generator for a random variable which is a weighted Sum Of Chi-Squared random variables.
• farebro Farebrother's Algorithm for the cumulative probability of a weighted sum of non-central chi-squared variables.

spatstat.univar 3.1-7 (2026-03-18)

OVERVIEW

• Minor improvements.

SIGNIFICANT USER-VISIBLE CHANGES

• densityBC New argument 'xout'.
• densityBC Slightly accelerated.

spatstat.univar 3.1-6 (2026-01-17)

OVERVIEW

• Minor improvements.

SIGNIFICANT USER-VISIBLE CHANGES

• uniquemap Handles larger objects.
• unnormdensity Argument 'bw' may be NULL (treated as equivalent to 'bw' being missing).

spatstat.univar 3.1-5 (2025-11-17)

OVERVIEW

• ‘unnormdensity’ returns the smoothing parameters used.
• Minor improvements.

SIGNIFICANT USER-VISIBLE CHANGES

• unnormdensity The result has an attribute 'smooth.args' containing the smoothing parameters that were used in the calculation.

spatstat.univar 3.1-4 (2025-07-13)

OVERVIEW

• Extension to weighted median and weighted quantiles.

SIGNIFICANT USER-VISIBLE CHANGES

• weighted.median, weighted.quantile New option: type = 3. Default changed to 'collapse=FALSE'. Documentation corrected and improved.
• weighted.median, weighted.quantile, weighted.var If 'w' is missing or NULL, the default weights are all equal to 1.

spatstat.univar 3.1-3 (2025-05-07)

OVERVIEW

• More support for 'interpolatedCDF' objects.

NEW FUNCTIONS

• plot.interpolatedCDF Plot method for interpolatedCDF objects.
• print.interpolatedCDF Print method for interpolatedCDF objects.

spatstat.univar 3.1-2 (2025-03-05)

OVERVIEW

• Improvements to documentation.
• Internal improvements.

spatstat.univar 3.1-1 (2024-11-05)

OVERVIEW

• Internal changes to satisfy package checker.

spatstat.univar 3.1-0

OVERVIEW

• Boundary-corrected kernel density estimation on the positive half-line.
• Bandwidth selection by non-random bootstrap.
• Minor improvements to documentation.

NEW FUNCTIONS

• bw.taylor Bandwidth selection for kernel density estimation using Taylor's non-random bootstrap
• densityBC An extension of density.default that includes boundary corrections for truncation of the density to the positive half line.
• densityAdaptiveKernel.default Variable-bandwidth kernel density estimation, with optional boundary correction.
• dkernelBC Evaluate the boundary corrected kernel

spatstat.univar 3.0-1 (2024-09-05)

OVERVIEW

• quantiles using linear approximation.
• extract the knots of a weighted CDF

NEW FUNCTIONS

• knots.ewcdf Method for generic 'knots' for extracting the jump points of a weighted cumulative distribution function (object of class 'ewcdf').

SIGNIFICANT USER-VISIBLE CHANGES

• quantile.ecdf, quantile.ewcdf Now supports type=4 (linear interpolation).
• quantilefun.ecdf, quantilefun.ewcdf Now supports type=4 (linear interpolation).

spatstat.univar 3.0-0 (2024-06-28)

OVERVIEW

• Abramson adaptive bandwidths.
• Adaptive kernel smoothing.
• Digits in the decimal representation of a number.
• Unique representatives in a vector or data frame.
• Bug fix in weighted.quantile.
• Internal improvements.

NEW FUNCTIONS

• bw.abram Generic function for computing Abramson adaptive bandwidths.
• bw.abram.default Default method for computing Abramson adaptive bandwidths for numerical data.
• densityAdaptiveKernel Generic function moved from spatstat.explore to spatstat.univar.
• rounding, rounding.default Functions moved from spatstat.geom to spatstat.univar.
• firstdigit, lastdigit, ndigits Digits in the decimal representation of a number.
• uniquemap Generic function moved from spatstat.geom to spatstat.univar.
• uniquemap.default Method for mapping duplicate entries to unique entries in a vector. Moved from spatstat.geom to spatstat.univar.
• uniquemap.data.frame, uniquemap.matrix Method for mapping duplicate rows to unique rows in a data frame. Moved from spatstat.geom to spatstat.univar.

BUG FIXES

• weighted.quantile Implementation was incorrect for type=2. Fixed.

spatstat.univar 2.0-3 (2024-04-29)

OVERVIEW

• Minor corrections to package information.

spatstat.univar 2.0-2 (2024-04-16)

OVERVIEW

• Minor corrections to package information.

spatstat.univar 2.0-1

OVERVIEW

• Minor corrections to package information.

spatstat.univar 2.0-0

OVERVIEW

• First release of package.