NEWS
ConfidenceEllipse 1.1.0 (2025-06-01)
- Added
distribution parameter to the confidence_ellipse() and confidence_ellipsoid
functions allowing users to choose between "normal" and "hotelling" (Hotelling's T²) distributions
for ellipse calculation.
- Enhanced statistical rigor: Hotelling's T² distribution now properly accounts
for parameter estimation uncertainty in small sample sizes.
- Updated documentation with detailed explanations of distribution choices and robust methods.
- Added recommendations for parameter selection based on sample size and data characteristics.
- Change name of
transform_data helper function to transform_2d and transform_3d for clarity and consistency.
ConfidenceEllipse 1.0.0 (2024-04-22)
- Added
robust parameter to the confidence_ellipse() and confidence_ellipsoid functions enabling robust
estimation methods using 1-step M-estimator with biweight psi function for location
and Minimum Covariance Determinant (MCD) estimator for scale.
- Improved handling of outliers and non-normal data through robust estimation options.
- Enhanced documentation with examples demonstrating the use of robust methods.
- CRAN release with comprehensive vignettes and examples.
ConfidenceEllipse 0.2.1
- Improved code of
transform_data helper function.
ConfidenceEllipse 0.2.0
- Added
transform_data helper function to streamline data transformation processes.
ConfidenceEllipse 0.1.4
- Modified package logo to include a more visually appealing design.
- Updated package description to better reflect the functionality and features of the package.
ConfidenceEllipse 0.1.3
- Cleaned up code and improved performance of
confidence_ellipse() and confidence_ellipsoid() functions.
ConfidenceEllipse 0.1.2
- Introduced
confidence_ellipse() function for 2D confidence ellipse calculations.
- Introduced
confidence_ellipsoid() function for 3D confidence ellipsoid calculations.
ConfidenceEllipse 0.1.1
- Fixed bug in
confidence_ellipse() function where the conf_level parameter was not being correctly applied.
ConfidenceEllipse 0.1.0
- Initial release of the ConfidenceEllipse package.