FlywayNet (version 0.1.0)

get_counts: Count birds on each site at each time step from given set of trajectories.

Description

Count birds on each site at each time step from given set of trajectories. The number of flying and dead birds are also computed.

Usage

get_counts(migr, traj)

Arguments

migr

A migration structure (attributes horizon, initial_state are used).

traj

A trajectory matrix N x (horizon+1) with a trajectory for each bird. For each bird, at each time step (from 0 to horizon), state of the bird is specified: site number, 0 for flying, -1 for dead.

Value

Counts of birds on sites, matrix (S+2) x (horizon+1). At each time step (from 1 to horizon), count of birds in each site. The first column (time step 0) and the two last rows (state flying and dead) are set to NA.

Examples

# NOT RUN {
migr <- generate_toy_migration()
traj <- generate_trajectories( migr )
get_counts( migr, traj )
# }