R: Evaluates all expressions within a parameter.

evaluateParamExpressions {ParamHelpers} | R Documentation

## Evaluates all expressions within a parameter.

### Description

Evaluates the expressions of a parameter, parameter set or list of parameters for a given dictionary.

### Usage

    evaluateParamExpressions(obj, dict = NULL)

### Arguments

`obj` | [`Param` | `ParamSet` | `list`] Parameter, parameter set or list of parameter values. Expressions within `len`, `lower` or `upper` boundaries, `default` or `values` will be evaluated using the provided dictionary (`dict`).
`dict` | [`environment` | `list` | `NULL`] Environment or list which will be used for evaluating the variables of expressions within a parameter, parameter set or list of parameters. The default is `NULL`.

### Value

[`Param` | `ParamSet` | `list`].

### Examples

    ps = makeParamSet(
      makeNumericParam("x", lower = expression(p), upper = expression(ceiling(3 * p))),
      makeIntegerParam("y", lower = 1, upper = 2)
    )
    evaluateParamExpressions(ps, dict = list(p = 3))

    ps = makeParamSet(
      makeNumericParam("x", default = expression(sum(data$Species == "setosa"))),
      makeIntegerParam("y", lower = 1, upper = 2),
      keys = c("data", "Species")
    )
    evaluateParamExpressions(ps, dict = list(data = iris))

    par.vals = list(
      x = expression(k),
      y = 5
    )
    evaluateParamExpressions(par.vals, dict = list(k = 3))

[Package ParamHelpers version 1.12 Index]