create_matrix_l_u: Create a matrix for lower and upper

In dRiftDM: Estimating (Time-Dependent) Drift Diffusion Models

Create a matrix for lower and upper

Description

Outsourced, deep inside the package function to avoid large nesting

Usage

create_matrix_l_u(l_u, conds, prm_labels = NULL)

Arguments

l_u	either a list or a vector of numeric values
conds	a character string, conceptually representing the conditions of a model
prm_labels	a character string with parameter labels. Used as a fall back when the default_values are not labeled (see details)

Details

The goal of this function is to build up a matrix, serving as the upper or lower end of a parameter space (relevant when simulating data). The function gets called by get_lower_upper_smart().

It assumes the following: l_u is either a list or a numeric vector.

• The easiest case is when it is a numeric vector. In this case, the function builds a matrix with as many rows as entries in conds. The rows will also be labeled according to conds. The column names are either the names specified with the numeric vector, or the labels specified in prm_labels

• The less intuitive case is when l_u is a list. In this case, the list requires an entry called "default_values" which specifies the named or plain numeric vector as above. If the list only contains this entry, then the behavior is as if l_u was already a numeric vector. However, the l_u list can also have entries labeled as specific conditions, which contain named (!) numeric vectors with parameter labels. This will modify the value for the upper/lower parameter space with respect to the specified parameters in the respective condition.#'

Value

a matrix indicating either the upper or lower end of a parameter space. There will be as many rows as conds implies. The number of columns depend on l_u (matching its length if it is a vector, or matching the length of the entry "default_values" if it is a list).

See Also

simulate_data(), simulate_values()

dRiftDM documentation built on April 3, 2025, 7:48 p.m.