| argosDiag2Cov {crawl} | R Documentation |
Transform Argos diagnostic data to covariance matrix form
Description
Using this function the user can transform the Argos diagnostic data for location
error into a form usable as a covariance matrix to approximate the location error with a
bivariate Gaussian distribution. The resulting data.frame should be attached back to the data
with cbind to use with the crwMLE function.
Usage
argosDiag2Cov(Major, Minor, Orientation)
Arguments
Major |
A vector containing the major axis information for each observation (na values are ok) |
Minor |
A vector containing the minor axis information for each observation (na values are ok) |
Orientation |
A vector containing the angle orientation of the Major axis from North (na values are ok) |
Value
A data.frame with the following columns
ln.sd.x |
The log standard deviation of the location error in the x coordinate |
ln.sd.y |
The log standard deviation of the location error in the x coordinate |
rho |
The correlation of the bivariate location error ellipse |
Author(s)
Devin S. Johnson