Null-Filtor

Null-filtor that does not perform filtering. Its needed_input() is always the output_size, and operate() selects the first n_filter values from its input.

Useful in particular with operator-wrappers such as FiltorProxy, and to make filtering optional.

Configuration Parameters

This operator has no configuration parameters.

Supported Operand Types

Supported Param classes are: ParamLgl, ParamInt, ParamDbl, ParamFct

Dictionary

This Filtor can be created with the short access form ftr() (ftrs() to get a list), or through the the dictionary dict_filtors in the following way:

# preferred:
ftr("null")
ftrs("null")  # takes vector IDs, returns list of Filtors

# long form:
dict_filtors$get("null")

See also

Other filtors: Filtor, FiltorSurrogate, dict_filtors_maybe, dict_filtors_proxy, dict_filtors_surprog, dict_filtors_surtour

Super classes

miesmuschel::MiesOperator -> miesmuschel::Filtor -> FiltorNull

Methods

Public methods

• FiltorNull$new()

• FiltorNull$clone()

Inherited methods

• miesmuschel::MiesOperator$help()
• miesmuschel::MiesOperator$operate()
• miesmuschel::MiesOperator$prime()
• miesmuschel::MiesOperator$print()
• miesmuschel::MiesOperator$repr()
• miesmuschel::Filtor$needed_input()

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Method new()

Initialize the FiltorNull object.

Usage

FiltorNull$new()

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Method clone()

The objects of this class are cloneable with this method.

Usage

FiltorNull$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

fn = ftr("null")

p = ps(x = p_dbl(-5, 5))
known_data = data.frame(x = 1:5)
fitnesses = 1:5

new_data = data.frame(x = c(2.5, 4.5))

fn$prime(p)

fn$needed_input(1)
#> [1] 1

fn$operate(new_data, known_data, fitnesses, 1)
#> [1] 1