rprocess-pomp              package:pomp              R Documentation

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_D_e_s_c_r_i_p_t_i_o_n:

     The method 'rprocess' runs simulations of the the process-model
     portion of partially-observed Markov process. This function is
     part of the low-level interface to 'pomp' objects. This help page
     does not give instructions on the implementation of models: see
     'pomp' for instructions.

_U_s_a_g_e:

     rprocess(object, xstart, times, params, ...)
     ## S4 method for signature 'pomp':
     rprocess(object, xstart, times, params, ...)

_A_r_g_u_m_e_n_t_s:

  object: an object of class 'pomp'.

  xstart: a rank-2 array containing the starting state of the system.
          Columns of 'xstart' correspond to states; rows to state
          variables. If there is more than one column of 'xstart',
          multiple independent simulations will be performed, one
          corresponding to each column. Note that in this case,
          'params' must have the same number of columns as 'xstart'. 

   times: a numerical vector containing times. The first entry of
          'times' is the initial time (corresponding to 'xstart').
          Subsequent times are the additional times at which the state
          of the simulated processes are required. 

  params: a rank-2 array of parameters with the parameters
          corresponding to the columns of 'xstart'. 

     ...: at present, these are ignored.

_D_e_t_a_i_l_s:

     This function is essentially a wrapper around the user-supplied
     'rprocess' slot of the 'pomp' object. For specifications on
     writing such a function, see 'pomp'.

_V_a_l_u_e:

     'rprocess' returns a rank-3 array with rownames. Suppose 'x' is
     the array returned. Then 'dim(x)=c(nvars,nreps,ntimes)', where
     'nvars' is the number of state variables (='nrow(xstart)'),
     'nreps' is the number of independent realizations simulated
     (='ncol(xstart)'), and 'ntimes' is the length of the vector
     'times'. 'x[,j,k]' is the value of the state process in the 'j'-th
     realization at time 'times[k]'. In particular, 'x[,,1]' must be
     identical to 'xstart'. The rownames of 'x' must correspond to
     those of 'xstart'.

_A_u_t_h_o_r(_s):

     Aaron A. King kingaa at umich dot edu

_S_e_e _A_l_s_o:

     'pomp-class', 'pomp'

