View source: R/simdata_discr.R
simdata_discr | R Documentation |
Multi-dimension simulation function
simdata_discr( N = 100, a = -0.05, f1 = 80, Q = 2e-08, f = 80, b = 5, mu0 = 1e-05, theta = 0.08, ystart = 80, tstart = 30, tend = 105, dt = 1, nobs = NULL, format = "long" )
N |
Number of individuals |
a |
A k by k matrix, which characterize the rate of the adaptive response. |
f1 |
A particular state, which is a deviation from the normal (or optimal). This is a vector with length of k. |
Q |
A matrix k by k, which is a non-negative-definite symmetric matrix. |
f |
A vector-function (with length k) of the normal (or optimal) state. |
b |
A diffusion coefficient, k by k matrix. |
mu0 |
mortality at start period of time. |
theta |
A displacement coefficient of the Gompertz function. |
ystart |
A vector with length equal to number of dimensions used, defines starting values of covariates. Default ystart = 80. |
tstart |
Starting time (age). Can be a number (30 by default) or a vector of two numbers: c(a, b) - in this case, starting value of time is simulated via uniform(a,b) distribution. |
tend |
A number, defines final time (105 by default). |
dt |
A time step (1 by default). |
nobs |
A number, defines a number of observations (lines) for an individual, NULL by default. |
format |
Data format: "long" (default), "short". |
A table with simulated data.
Akushevich I., Kulminski A. and Manton K. (2005), Life tables with covariates: Dynamic model for Nonlinear Analysis of Longitudinal Data. Mathematical Population Studies, 12(2), pp.: 51-80. <DOI:10.1080/08898480590932296>.
library(stpm) data <- simdata_discr(N=100) head(data)
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