skeleton-pomp {pomp}R Documentation

Evaluate the deterministic skeleton at the given points in state space.

Description

The method skeleton computes the deterministic skeleton. In the case of a discrete-time system, this is the one-step map. In the case of a continuous-time system, this is the vector-field. NB: skeleton just evaluates the deterministic skeleton; it does not iterate or integrate.

Usage

skeleton(object, x, t, params, ...)
## S4 method for signature 'pomp':
skeleton(object, x, t, params, ...)

Arguments

object an object of class pomp.
x a rank-3 array containing the states of the unobserved process at which the deterministic skeleton is to be evaluated. The dimensions of x are nvars x nreps x ntimes, where nvars is the number of state variables, nreps is the number of replicates, and ntimes is the length of times. Note that if ntimes != length(times), an error is generated.
t a numeric vector containing the times at which the deterministic skeleton is to be evaluated.
params a rank-2 array of parameters with columns corresponding to the columns of x. Note that the x and params must agree in the number of their columns.
... at present, these are ignored.

Details

This function makes repeated calls to the user-supplied skeleton of the pomp object. For specifications on supplying this, see pomp.

Value

Returns an array of dimensions nvar x nreps x ntimes. If f is the returned matrix, f[i,j,k] is the i-th component of the deterministic skeleton at time times[k] given the state x[,j,k] and parameters params[,j].

Author(s)

Aaron A. King (kingaa at umich dot edu)

See Also

pomp-class, pomp


[Package pomp version 0.22-6 Index]