Probabilities of migration

Probabilities of migration

One of the output FLightR provides are the probabilities of migration. These probabilities are stored in Result$Results$Movement.results in the column $Decision. To plot them try

plot(Decision~time, data=Result$Results$Movement.results, pch="+")

One can also extract them by night or day. Ones that have $Dusk = TRUE are flights that were initiated in the eveing (nocturnal migration), and $Dusk = FALSE for diurnal.

Note, that normally one should not have probabilities of exactly 1 or 0, if you have them it is very likely that something went wrong. Think to check:

1. If it is in the end - you likely had known.last=TRUE in the run.particle.filter() function and your bird did not arrive back in the end of the track.
2. You specified not enough particles (e.g 1e5 instead of 1e6).
3. You bird is flying longer distances (km per inter-twilight period) than you specified for parameter b in the run.particle.filter() function.