Changes in version 2.0.1 (2024-01-10)                  

Minor change

  - Replaced lwgeom::st_perimeter() by sf::st_perimeter() (available in
    version 1.0.15). The package lwgeom is now under Suggests field (fix
    #33).

                 Changes in version 2.0.0 (2023-07-04)                  

Major changes

  - Defined a new hierarchical structure for defining the spatial
    plateau data types:
      - Added two new spatial plateau data types: pcollection and
        pcomposition.
      - Redefined the class named pgeometry.
      - Defined three spatial plateau data types that are subclasses of
        pgeometry: ppoint, pline, and pregion.
      - Specified validity methods for all classes according to the
        rules of the Spatial Plateau Algebra.
      - These modifications are based on the pull requests performed by
        Pedro V. A. B. de Venâncio, who is added as a contributor of the
        package fsr in the current version (#26 - @pedbrgs and #27 -
        @pedbrgs).
  - Added spa_get_type() (based on the pull request #27 - @pedbrgs).
  - Updated and improved functions that create pgeometry objects:
    create_pgeometry() and create_empty_pgeometry() (#27 - @pedbrgs).
  - Improved the creation of components by redesigning
    create_component(). component_from_sfg() is deprecated (it will be
    removed in the next version of the package).
  - Enhanced fsr_plot() and added the support for pcollection and
    pcomposition objects.
  - Added two new external functions that handle pcollection objects:
    spa_flatten() and pcollection_to_pcomposition() (based on the pull
    request #31 - @pedbrgs). They are also used by fuzzy geometric set
    operations on pcollection objects.
  - Enhanced fuzzy geometric set operations, which can now handle
    different data types as input (based on the pull request #31 -
    @pedbrgs).
  - Deprecated spa_common_points() - use spa_intersection() to get the
    common points of two plateau line objects.
  - Deprecated spa_boundary_pregion() - use spa_boundary to get the
    boundary of a spatial plateau object.
  - Enhanced general operations (e.g., spa_core(), spa_boundary()) to
    deal with the new spatial plateau data types (based on the pull
    request #31 - @pedbrgs).
  - Added three new general operations: spa_alpha_cut(),
    spa_strict_alpha_cut(), and spa_range().
  - Removed the dependency of packages FuzzyR and utils.

Minor changes

  - Better organization of the source code by creating more R scripts
    and rearranging the functions and classes in them.
  - Updated format.pgeometry() to include a parameter that determines
    the maximum number of characters that are shown.
  - Updated spa_pwkt() to deal with the new classes (based on the pull
    request #26 - @pedbrgs).
  - Updated spa_is_empty() to deal with the new classes (based on the
    pull request #26 - @pedbrgs).
  - Updated as_tibble() to deal with the new classes.
  - Extended fuzzy numerical operations to deal with the new classes
    (based on the pull request #30 - @pedbrgs).
  - Updated fuzzy topological relationships due to the changes in other
    operators (based on the pull request #31 - @pedbrgs).
  - Minor changes in functions of the construction module to use
    improved operations when manipulating spatial plateau objects.

Change in the list of authors

  - Added Pedro Vinícius Almeida Borges de Venâncio (@pedbrgs) as a
    contributor to the fsr.
  - We are grateful for the contributions of Felippe Galdino
    (@ocfgaldino) and Juliana Strieder Philippsen (@JulianaStrieder) in
    the first version of the package (1.0.0, 1.0.1, and 1.0.2). Their
    participation in the package was concluded; thus, they were removed
    from the list of authors in this version of the package, which
    includes several changes, improvements, and new methods.

                 Changes in version 1.0.2 (2022-07-05)                  

Minor changes

  - Added the parameter d_tolerance in the spa_creator() function. This
    parameter is employed by the package sf when computing the Voronoi
    diagram and Delaunay triangulation in the corresponding construction
    policies.

Bug fixes

  - Fixed the fuzzy numerical operations when dealing with empty
    objects.
  - Fixed spa_core() to return an empty crisp spatial object when the
    input has not a core.
  - Fixed some if statements and calculations in the fuzzy topological
    relationships.
  - Fixed the clipping operation in spa_creator() when using the
    construction policies based on the Voronoi diagram and Delaunay
    triangulation.

                 Changes in version 1.0.1 (2022-01-25)                  

Major changes

  - Added a new construction policy in the spa_creator() function based
    on the convex hull (an improved implementation from the issue #29).

Minor changes

  - Added the publication that describes the fsr package into CITATION.
  - Added an optional parameter in spa_creator() named digits (an
    improved update based on the pull request #28 - @leticiabohnert).

Bug fixes

  - Fixed spa_add_component() for checking a specific condition.
  - Fixed the management of CRS when plotting spatial plateau objects
    (fsr_plot()).
  - Fixed the management of geometry collections resulting from some
    geometric computations of the spatial plateau geometric set
    operations.

                 Changes in version 1.0.0 (2021-09-16)                  

  - This is the first release of fsr that consists of the following
    modules:
      - Fuzzy Spatial Inference Module (e.g., functions to create a
        fuzzy spatial inference model and functions to evaluate it).
      - Fuzzy Spatial Data Handling Module (e.g., fuzzy numerical
        operations, fuzzy geometric set operations, and fuzzy
        topological predicates).
      - Construction Module (e.g., spa_creator()).
      - Basic Module (e.g., S4 classes and basic functions).