Changes in version 0.2.3 (2026-01-11)                  

Process CRAN feedback on invalid relative paths in package URLs.

                 Changes in version 0.2.2 (2025-06-10)                  

Process CRAN feedback:

  - Arguments filenames in flexurba::download_GHSLdata(), and
    output_filenames and global_filenames in flexurba::crop_GHSLdata()
    are now required as per CRAN policy.

  - Minor changes to unit test such that files created in the temporary
    directory are cleaned up.

  - Changes to examples of download_GHSLdata.

                        Changes in version 0.2.1                        

  - Update spatial boundaries in flexurba::units_belgium based on data
    from the Algemene Directie Statistiek - Statistics Belgium, as these
    are available under Creative Commons CC BY 4.0 licence. Note that
    analysis that rely on flexurba::units_belgium might have different
    results.

  - Update parameter list in the function
    flexurba::DoU_get_grid_parameters(). The values UC_smooth_pop and
    UC_smooth_pop_window were missing from Level 1.

  - Several minor modifications on the developers side of the package to
    prepare for a CRAN submission.

                        Changes in version 0.2.0                        

  - New apply_threshold() identifies urban areas by applying a threshold
    on grid cells.

  - New convert_regions_to_grid() convert regions from a vector layer to
    gridded format.

  - New R package flexurbaData with global datasets accompanying the
    Flexurba R package. The package includes processed population and
    built-up area derived from the Global Human Settlement Layer, and
    night-time light grid derived from the Earth Observation Group.

  - New load_proxies_belgium() loads a sample of the proxy datasets in
    flexurbaData for the country of Belgium.

  - Two new vignettes: (1) vignette("vig8-apply-thresholds") discussing
    different thresholding approaches and (2)
    vignette("vig9-different-proxies") on different proxy datasets used
    to construct urban boundaries.

  - The functions that were specifically design to reconstruct the
    Degree of Urbanisation delineation have been renamed with the prefix
    DoU_ to make a more consistent API and allowing for a better
    tab-completion. The old names remain available for backward
    compatibility.
    
    | New name | Old name | | ----------------------------------- |
    ------------------------------- | | DoU_preprocess_grid() |
    preprocess_grid() | | DoU_classify_grid() | classify_grid() | |
    DoU_classify_grid_urban_centres() | classify_grid_urban_centres() |
    | DoU_classify_gid_urban_clusters() | classify_gid_urban_clusters()
    | | DoU_classify_grid_rural() | classify_grid_rural() | |
    DoU_classify_grid_water() | classify_grid_water() | |
    DoU_get_grid_parameters() | get_grid_parameters() | |
    DoU_get_optimal_builtup() | get_optimal_builtup() | |
    DoU_preprocess_units() | preprocess_units() | | DoU_classify_units()
    | classify_units() | | DoU_preprocess_units() | preprocess_units() |
    | DoU_load_grid_data_belgium() | load_grid_data_belgium() | |
    DoU_plot_grid() | plot_grid() | | DoU_plot_units() | plot_units() |

  - The grid classification rules for semi-dense urban clusters in
    Level 2 of DEGURBA have been modified in July 2024. To reflect the
    most up-to-date rules, the default flexurba grid parameters for
    semi-dense urban clusters in DoU_get_grid_parameters() have also
    been updated. Specifically:
    
      - the minimum density threshold (SDUC_density_threshold) increased
        from 300 to 900 inhabitants per km²
      - the minimum size threshold (SDUC_size_threshold) decreased
        from 5000 to 2500 inhabitants
      - the contiguity rule (SDUC_contiguity_rule) is modified from the
        queen (=8) to rook (=4) contiguity
      - the buffer size for semi-dense urban clusters SDUC_buffer_size
        is adjusted to 2 km
    
    Note that these changes will affect the results of
    DoU_classify_grid() and DoU_classify_grid_urban_clusters() if
    level1is set to FALSE. The previous classification rules for
    semi-dense urban clusters can still be applied by specifying them
    explicit in the function argument parameters. 

  - The unit classification rules for Level 2 of DEGURBA have been
    modified in July 2024. To reflect the most up-to-date rules, the
    flexurba function DoU_classify_units() is also updated (see the
    documentation page for more information). The previous
    classification rules can still be applied by setting the function
    argument rules_from_2021 to TRUE.

  - The function reference is restructured and the README, function
    documentation pages and vignettes are modified to reflect the
    updates.