estVarMKDE {mkde} | R Documentation |
Estimates the move variance for the (x, y) and z dimensions and altitude for a Brownian bridge MKDE.
estVarMKDE(move.dat)
move.dat |
A move data object created with |
Computes maximum-likelihood estimates for move variances. If the MKDE is 2D or 2.5D, only the variance for the xy-dimension is estimated. If the MKDE is 3D, a separate move variance for the z-dimension is also estimated.
A move data object updated with move variances
Jeff A. Tracey, PhD
USGS Western Ecological Research Center, San Diego Field Station
jatracey@usgs.gov
James Sheppard, PhD
San Diego Zoo Institute for Conservation Research
jsheppard@sandiegozoo.org
data(condor) mv.dat <- initializeMovementData(condor$time, condor$x, condor$y, z.obs=condor$z, sig2obs=25.0, sig2obs.z=81.0, t.max=65.0) mv.dat <- estVarMKDE(mv.dat) cat(paste("Move variance in xy-dimensions = ", mv.dat$sig2xy[1], "\n", sep="")) cat(paste("Move variance in z-dimension = ", mv.dat$sig2.z[1], "\n", sep=""))