# Fur Seal Analysis

Line 3: | Line 3: | ||

The data are from fur seal number NFS07-03, and include trips 1, 2, 3, 4 and 7, which were long enough for a complete analysis. | The data are from fur seal number NFS07-03, and include trips 1, 2, 3, 4 and 7, which were long enough for a complete analysis. | ||

− | The plots on the left show the time-series of velocity and turning angles decomposed into persistence (<math> V_p = V \cos(\theta) </math>) and turning (<math> V_t = V \sin(\theta)</math>) components. The black line is the estimate for the mean <math> \hat\mu </math>, the red line represents the estimate for the standard deviaion <math> \hat\sigma </math>, and the color reflects the auto-correlation <math> \hat\rho </math>: bluer colors indicate less auto-correlated movement, while yellow colors indicate more auto-correlated movement. Vertical | + | The plots on the left show the time-series of velocity and turning angles decomposed into persistence (<math> V_p = V \cos(\theta) </math>) and turning (<math> V_t = V \sin(\theta)</math>) components. The black line is the estimate for the mean <math> \hat\mu </math>, the red line represents the estimate for the standard deviaion <math> \hat\sigma </math>, and the color reflects the auto-correlation <math> \hat\rho </math>: bluer colors indicate less auto-correlated movement, while yellow colors indicate more auto-correlated movement. Vertical orange lines indicate points where the estimation routine suggests there was a significant behavioral shift. Thicker lines correspond to a higher number of selected shifts. Grey bands indicate nighttime. |

To the right, I present a mapping of the track itself. Colors again indicate the auto-correlation estimate for the persistence component (<math>V_p</math>), while the size of the dots indicates the estimated velocity at each point. | To the right, I present a mapping of the track itself. Colors again indicate the auto-correlation estimate for the persistence component (<math>V_p</math>), while the size of the dots indicates the estimated velocity at each point. |

## Revision as of 21:52, 2 April 2008

This file: FurSealAllPlots.pdf contains plots of five Northern fur seal tracks and analysis according to the Gurarie-2008 method.

The data are from fur seal number NFS07-03, and include trips 1, 2, 3, 4 and 7, which were long enough for a complete analysis.

The plots on the left show the time-series of velocity and turning angles decomposed into persistence (*V*_{p} = *V*cos(θ)) and turning (*V*_{t} = *V*sin(θ)) components. The black line is the estimate for the mean , the red line represents the estimate for the standard deviaion , and the color reflects the auto-correlation : bluer colors indicate less auto-correlated movement, while yellow colors indicate more auto-correlated movement. Vertical orange lines indicate points where the estimation routine suggests there was a significant behavioral shift. Thicker lines correspond to a higher number of selected shifts. Grey bands indicate nighttime.

To the right, I present a mapping of the track itself. Colors again indicate the auto-correlation estimate for the persistence component (*V*_{p}), while the size of the dots indicates the estimated velocity at each point.

There is (in my view) lots of things to think about here!

Eli 14:44, 2 April 2008 (PDT)