Struct PrecisionRecallCurve 

pub struct PrecisionRecallCurve { /* private fields */ }

A single precision–recall curve as a drawable series (coordinate space (f64, f64) = (recall, precision)).

Implementations

impl PrecisionRecallCurve

pub fn from_scores(scores: &[f64], labels: &[bool]) -> Result<Self, StatsError>

Build from raw predicted scores and true binary labels.

pub fn from_points( points: Vec<(f64, f64)>, average_precision: f64, baseline: f64, ) -> Self

Build directly from precomputed (recall, precision) points plus the average precision and positive-class prevalence baseline.

pub fn average_precision(&self) -> f64

The average precision (area under the PR curve, step definition).

pub fn baseline_value(&self) -> f64

The positive-class prevalence used as the chance baseline.

pub fn legend_label(&self, name: &str) -> String

A legend label of the form "{name} (AP = 0.83)". Build before moving the curve into draw_series.

pub fn color(self, color: RGBColor) -> Self

Set the line color.

pub fn stroke_width(self, width: u32) -> Self

Set the line stroke width in pixels.

pub fn shade_area(self, shade: bool) -> Self

Fill the area under the curve.

pub fn with_baseline(self) -> Self

Draw the horizontal prevalence baseline (the PR chance line).

Trait Implementations

impl Clone for PrecisionRecallCurve

fn clone(&self) -> PrecisionRecallCurve

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PrecisionRecallCurve

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

Formats the value using the given formatter.

impl<DB: DrawingBackend> Drawable<DB> for PrecisionRecallCurve

fn draw<I: Iterator<Item = BackendCoord>>( &self, points: I, backend: &mut DB, _parent_dim: (u32, u32), ) -> Result<(), DrawingErrorKind<DB::ErrorType>>

Actually draws the element. The key points is already translated into the image coordinate and can be used by DC directly

impl<'a> PointCollection<'a, (f64, f64)> for &'a PrecisionRecallCurve

type Point = &'a (f64, f64)

The item in point iterator

type IntoIter = &'a [(f64, f64)]

The point iterator

fn point_iter(self) -> &'a [(f64, f64)]

framework to do the coordinate mapping