Struct Formula 

pub struct Formula {
    pub response: Option<Term>,
    pub predictors: Vec<Term>,
    pub intercept: bool,
}

A formula expression (response ~ predictors)

Fields

response: Option<Term>

Response variable (left side of ~)

predictors: Vec<Term>

Predictor terms (right side of ~)

intercept: bool

Whether to include intercept (default: true)

Implementations

impl Formula

pub fn parse(input: &str) -> Result<Self, Error>

Create a new formula from a string

pub fn no_intercept(self) -> Self

Create a formula with no intercept

pub fn variables(&self) -> HashSet<String>

Get all variable names in the formula

pub fn build_matrix(&self, df: &DataFrame) -> Result<Array2<f64>, Error>

Build design matrix from DataFrame

pub fn response_vector( &self, df: &DataFrame, ) -> Result<Option<Array1<f64>>, Error>

Get response variable as array (if specified)

Trait Implementations

impl Clone for Formula

fn clone(&self) -> Formula

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Formula

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.