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find constructor

Source: R/transformations.R
make_find.Rd

Find the index of a data value in a set of categories.

Usage

make_find(input_domain, input_metric, categories)

Arguments

input_domain

The domain of the input vector.

input_metric

The metric of the input vector.

categories

The set of categories to find indexes from.

Value

Transformation

Details

For each value in the input vector, finds the index of the value in categories. If an index is found, returns Some(index), else None. Chain with make_impute_constant or make_drop_null to handle nullity.

make_find in Rust documentation.

Supporting Elements:

  • Input Domain: VectorDomain<AtomDomain<TIA>>

  • Output Domain: VectorDomain<OptionDomain<AtomDomain<usize>>>

  • Input Metric: M

  • Output Metric: M