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Changelog

Source: NEWS.md

traveltime 1.0.0

CRAN release: 2026-10-31

  • First CRAN release.
  • calculate_travel_time() now uses terra::costDist() internally, removing the dependencies on the superseded raster and gdistance packages. Results are effectively the same; see the validation article for details of the small differences.
  • Cells that cannot be reached from any of points (e.g. because they are cut off by NA cells) are now NA in the output of calculate_travel_time(). Previously they were Inf.
  • calculate_travel_time() now drops (with a warning) any points that fall outside friction_surface, and errors if none fall within it.
  • calculate_travel_time() now works with a single point supplied as a one-row matrix or a one-point SpatVector. Previously these errored.
  • ext_matrix(), and so get_friction_surface(), now accept integer as well as double vectors for extent.
  • calculate_travel_time() and get_friction_surface() now correctly return the existing file when filename already exists and overwrite = FALSE, as documented. Previously they warned and then errored.
  • get_friction_surface() now fails gracefully, returning NULL with a warning, if the friction surface cannot be downloaded.
  • Removed unused dependency on lifecycle.