Struct ColumnTransformer 

pub struct ColumnTransformer { /* private fields */ }

ColumnTransformer applies different transformers to different columns

Implementations

impl ColumnTransformer

pub fn new(remainder: RemainderOption) -> Self

Creates a new ColumnTransformer

Arguments

• remainder - How to handle unspecified columns

pub fn add_transformer( self, name: impl Into<String>, transformer: Box<dyn Transformer>, columns: Vec<usize>, ) -> Self

Adds a transformer for specific columns

Arguments

• name - Name of the transformer
• transformer - The transformer to apply
• columns - Column indices to apply the transformer to

Returns

• Self - The ColumnTransformer for chaining

pub fn fit<S>(&mut self, x: &ArrayBase<S, Ix2>) -> Result<()>

where S: Data, S::Elem: Float + NumCast,

Fits all transformers to their respective columns

Arguments

• x - The input data

Returns

• Result<()> - Ok if successful, Err otherwise

pub fn transform<S>(&self, x: &ArrayBase<S, Ix2>) -> Result<Array2<f64>>

where S: Data, S::Elem: Float + NumCast,

Transforms data using all configured transformers

Arguments

• x - The input data

Returns

• Result<Array2<f64>> - The transformed data

pub fn fit_transform<S>(&mut self, x: &ArrayBase<S, Ix2>) -> Result<Array2<f64>>

where S: Data, S::Elem: Float + NumCast,

Fits and transforms data in one step