Struct Pipeline 

pub struct Pipeline { /* private fields */ }

A pipeline of transformations to be applied sequentially

Implementations

impl Pipeline

pub fn new() -> Self

Creates a new empty pipeline

pub fn add_step( self, name: impl Into<String>, transformer: Box<dyn Transformer>, ) -> Self

Adds a step to the pipeline

Arguments

• name - Name of the step
• transformer - The transformer to add

Returns

• Self - The pipeline for chaining

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

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

Fits all steps in the pipeline

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 through all steps in the pipeline

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 through all steps in the pipeline

Arguments

• x - The input data

Returns

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

pub fn len(&self) -> usize

Returns the number of steps in the pipeline

pub fn is_empty(&self) -> bool

Returns whether the pipeline is empty

pub fn get_step(&self, name: &str) -> Option<&dyn Transformer>

Gets a reference to a step by name

pub fn get_step_mut(&mut self, name: &str) -> Option<&mut Box<dyn Transformer>>

Gets a mutable reference to a step by name

Trait Implementations

impl Default for Pipeline

fn default() -> Self

Returns the “default value” for a type.