Mapping wildlife contacts
contacts is a simple function for mapping where wildlife contacts
occur on the landscape with wildilfe telemetry data.
an object of the class
time threshold for determining simultaneous fixes – see function:
distance tolerance limit (in appropriate units) for defining when two fixes are spatially together.
a string object containing the projection information to be passed included in the output
contacts can be used to map where contacts occur on the lansdcape,
contacts being defined spatially based on a distance threshold
dc and temporally
based on the time threshold
tc – see the function
getsimultaneous. The location
of the contact is calculated as the midpoint between the two fixes that are determined
to be a "contact" based on
SpatialPointsDataFrame containing the locations of the contacts. The time of the
contact is stored in the attributes of the
SpatialPointsDataFrame object, along with
the actual distance between fixes.
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