Description Usage Arguments Value
Computes negative log-likelihood of moveDs model
1 2 3 4 | NegativeLogLikelihood(working_parameter, start, data, transdat,
auxiliary_data, delta, num_cells, T, ymax, buffer, movement_data,
fixed_sd = 0, hzfn = 1L, move_method = 1L, print = FALSE,
con = 100)
|
working_parameter |
unconstrained version of parameter vector containing (detection shape, detection scale, diffusion sd) |
start |
start value for parameters on natural scale |
data |
matrix with (trans id, grid cell,t) distance sampling survey data (assumed to be ordered by transect and time) |
transdat |
matrix with (stripsize(1), numcells in y, totaltimestep, number of observations) |
auxiliary_data |
vector containing (area x extent, area y extent, strip width, transect_type) |
delta |
vector of (dx, dt) spacetime increments |
num_cells |
number of cells in (total space, x-direction, y-direction) |
T |
total time of survey for longest transect |
ymax |
maximum length of a transect |
buffer |
buffer distance |
movement_data |
field object where each component represents an individual path and contains a matrix where each row is an observed location (x,y,t) |
fixed_sd |
if move_method = 2 |
hzfn |
hazard function code (see ?hazardfns) |
move_method |
0 = 2d CDS model, 1 = 2d MDS model (movement estimated), 2 = 2d MDS model (movement fixed) |
print |
if TRUE then print likelihood and parmeters after evaluation |
con |
parameters are constrained to be between 1/con * start value and con * start value |
negative log-likelihood
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