This function returns a list of biologically interesting parameters in human readable format, as derived from a continuous-time movement model.
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object |
A |
level |
Confidence level for parameter estimates. |
level.UD |
Confidence level for the Gaussian home-range area. |
... |
Unused options. |
If summary is called with a single ctmm
object output from ctmm.fit
, then a table is returned with low, maximum likelihood, and high estimates for the following possible parameters:
tau
The autocorrelation timescales.
area
The Gaussian home-range area, where the point estimate has a significance level of level.UD
. I.e., the core home range is where the animal is located 50% of the time with level.UD=0.50
.
This point estimate itself is subject to uncertainty, and is given confidence intervals derived from level
.
speed
The Gaussian root-mean-square (RMS) velocity, which is a convenient measure of average speed.
If summary is called on a list of ctmm
objects output from ctmm.select
, then a table is returned with the model names and AIC differences, where "IID" denotes the uncorrelated bi-variate Gaussian model, "OU" denotes the continuous-position Ornstein-Uhlenbeck model, and "OUF" denotes the continuous-velocity Ornstein-Uhlenbeck-F model.
Confidence intervals on the autocorrelation timescales assume they are sufficiently greater than zero and less than infinity.
In ctmm
v0.3.4 the speed estimate was fixed to be the RMS velocity and not 1/√{2} times the RMS velocity.
C. H. Fleming.
ctmm.fit
, ctmm.select
.
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