R: Logical Check of Constraints

is.constrained {LaplacesDemon} | R Documentation

## Logical Check of Constraints

### Description

This function provides a logical test of constraints for each initial value or parameter for a model specification, given data.

### Usage

    is.constrained(Model, Initial.Values, Data)

### Arguments

`Model` | This is a model specification function. For more information, see the `LaplacesDemon` function.
`Initial.Values` | This is a vector of initial values, or current parameter values. For more information, see the `LaplacesDemon` function.
`Data` | This is a list of data. For more information, see the `LaplacesDemon` function.

### Details

This function is useful for testing whether or not initial values changed due to constraints when being passed through a `Model` specification function. If any initial value changes, then the constrained values that are ouput in the fifth component of the `Model` specification are suitable as initial values, not the tested initial values.

A parameter may be constrained and this function may not discover the constraint, since the discovery depends on the initial values and whether or not they change as they are passed through the model.

### Value

The `is.constrained` function returns a logical vector, equal in length to the number of initial values. Each element receives `TRUE` if the corresponding initial value changed due to a constraint, or `FALSE` if it did not.

### Author(s)

Statisticat, LLC. software@bayesian-inference.com

### See Also

`LaplacesDemon`.

[Package LaplacesDemon version 16.1.1 Index]