Reference

Creation/conversion
as_sftrack()	Convert objects into sftrack objects.
as_sftraj()	Convert objects into sftrack objects.
new_sftrack()	Define an sftrack
new_sftraj()	Define an sftraj
print(<sftrack>)	Print methods for sftrack
print(<sftraj>)	Print methods for sftraj
summary_sftrack()	Summarize sftrack objects
Data checks and fixes
calc_sort_index()	Calculate a new sort index for groups
check_NA_coords()	Check if coordinates contain NAs in some columns but not others
check_NA_group()	Check there are no NAs in burst
check_group_id()	Check there is a grouping id present
check_group_names()	Are group names equivalent for each s_group?
check_names_exist()	Check if a set of column names are found in a data frame and return an error if not
check_ordered()	Checks if grouping is ordered by time and then outputs the correct order
check_t_regular()	Check if time is regular for each burst and returns logical for each burst
check_time()	Check if time is integer or posix
dup_timestamp()	check that time is unique
fix_zero()	fix 0's to NAs in latitude and longitude
is_linestring()	Is a trajectory geometry a linestring or a point
which_duplicated()	Which grouping/time stamp combos are duplicated.
Plotting
geom_sftrack()	Function to plot sftrack objects in ggplot
plot(<sftrack>) plot(<sftraj>)	Methods for plotting sftrack/sftraj
Group management
active_group()	Access the active_group value
`active_group<-`()	Set new active group
group_labels()	Shows grouping labels created from the s_group and the c_grouping
group_names()	Display the levels of the sort index
make_s_group() make_c_grouping() c(<s_group>) c(<c_grouping>)	A class to group movement data
Working with geometries
make_step_geom()	Calculate step geometries given a set of groupings, time, and geometries
merge_traj()	Merge connected lines and create an sf object
step_metrics()	Calculates step metrics including distance, dt, dx, and dy.
step_recalc()	recalculate step geometry
pts_traj() coord_traj()	Return a list of sf_POINTS or a data.frame from a sftraj object
Datasets
raccoon	Movements of two raccoons in an urban park in Florida