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Calculate Brownian Bridge Movement Model (bbmm) kernels

opp_bbmm.Rd

This function is a wrapper of adehabitatHR::kernelbb and calculates Brownian Bridge Movement Model (bbmm) kernels for a given set of tracks.

Usage

opp_bbmm(
  data,
  sig2 = 20,
  bridgeSmooth = 1,
  res,
  extendGrid = 10,
  useGappy = TRUE,
  interpolated = TRUE,
  showLiker = FALSE,
  ...
)

Arguments

data

Trips, as output by either opp_get_trips or ctcrw_interpolation.

sig2

Numeric. sig2 parameter in the bbmm model, typically expressed as GPS error in meters.

bridgeSmooth

Numeric. Parameter to over-smooth bbmm kernels.

res

Numeric. Resolution in km of base kernel grid.

extendGrid

Numeric. Distance (km) to expand grid beyond the bounding box of tracking data. Default 10km.

useGappy

Logical (T/F). Should "Gappy" trips as identified by opp_get_trips be included in bbmm? Default TRUE. If FALSE, only trips identified as "Complete" are used. Note this parameter is ignore if using interpolated data, where by definition the gaps have been interpolated over.

interpolated

Logical (T/F). If an output from ctcrw_interpolation is provided, should the interpolated data be used? Default is TRUE.

showLiker

Logical (T/F). Show plot outputs from adehabitatHR::liker (used to calculate bbmm sig1 parameter)? Default FALSE.