landscapemetrics 2.1.0

• Improvements
  • Many performance improvements. Most visible are in
    calculate_lsm (all metrics: more than 5 times faster with 70% less memory
    allocation for augusta_nlcd; larger increases were found for smaller data)
    and window_lsm (a single metric: more than 6 times faster for augusta_nlcd;
    larger increases were found for smaller data)
  • Some performance improvements are related to the new "extras" mechanism, in which several objects
    are precalculated in calculate_lsm
  • Creates an internal extras_df object that lists which extras are needed by
    each metric
  • Replaces the use of tibble::tibble() with tibble::new_tibble(list()) in most functions.
    This change is partially responsible for improvements of the window_lsm speed
  • Replaces raster_to_points with get_points in several places.
    The get_points function is based on the column and row numbers multiplied by
    the resolution, not actual coordinates.
  • Replaces table with (faster) tabulate in lsm_p_core
• New functions
  • Adds a few internal helper functions and documents them, including prepare_extras,
    get_area_patches, get_class_patches, get_complexity, get_enn_patch,
    get_points, and get_perimeter_patch
• Bugfixes
  • Fixes window_lsm behaviour for situations with NAs values and non-square windows
• Various
  • Fixes several typos and improves documentation in many places
  • Uses object references in most rcpp functions