All functions

dist2arc()

Approximate angle for a distance

estimation_mask()

Raster termplate for estimation

filter_earliest_neigh()

Earliest observations within a neighbourhood

fit_surface()

Fit a Thin-plate splines model to a set of observations

get_lonlatvars()

Identify variables with geographical coordinates

invslope()

Compute the inverse slope of the input surface

mc_sample()

Monte Carlo samples from a dataset

neigh_tol()

Neighbourhood Tolerance Parameter

representative_points()

Choose representative points

sr()

Spread rate

sr_fdoi()

First-date of invasion

sr_obs()

Define a observations dataset

sr_uq()

Parameters for Uncertainty Quantification

st_transform(<sr_obs>)

Transform coordinates of a sr_obs object

time_jitter()

Jitter a vector of 1D values