The class {Combined2}
defines the the residual error variance according
to the formula g(sigma_inter, sigma_slope, c_error, f(x, theta)) = sigma_inter^2 + sigma_slope^2 * f_x_i_theta.
{Combined2}
objects are typically created by calls to {Combined2}
and contain the following slots that are heritated from the class Combined2c:
.Object
:An object of the class ModelError
sigma_inter
:A numeric value giving the sigma inter of the error model.
sigma_slope
:A numeric value giving the sigma slope of the error model.