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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the superseded raster and gdistance packages.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.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.lifecycle.These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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