modelList2Vec: Extract the master parameter vector from a model list object.
In Data2LD: Functional Data Analysis with Linear Differential Equations

Description Usage Arguments Details Value References See Also

A system of linear differential equations is defined by a list of length equal to the number of variables in the system. Each member of this list defines a single linear differential equation. Within each equation there are typically one or more terms involving a coefficient function multiplying either a derivative of one of the variables, or multiplying a forcing function. The coefficient functions in term are defined by one or more parameters. For some coefficients, its parameters are regarded as fixed, but for others, they require estimation from the data. This function extracts all the parameters requiring estimation and returns them as a one-dimensional vector.

1	modelList2Vec(modelList, nparam)

`modelList`	A list object containing the specification of a Data2LD model. Each member of this list contains a list object that defines a single linear differential equation.
`nparam`	The total number of parameters in the master parameter vector, which contains all parameters, whether estimated or not.

The parameters in the master parameter vector are organized as follows. First come the parameters defining the homogeneous coefficient functions, in the order in which the appear in the equation system. Next come the parameters defining the forcing coefficient functions, also in the order in which they appear.

Normally the user will have a limited need to deal with the master parameter vector. Both the initial and final parameter values are displayed by the function printModel in a much more readable form.

A numerical vector object containing values of the parameters to be estimated. The order of these parameters is the order in which they occur as each member of a model list object in turn is processed.

J. O. Ramsay and G. Hooker (2017) Dynamic Data Analysis. Springer.

modelVec2List

Data2LD documentation built on Aug. 6, 2020, 1:08 a.m.