Struct QqPlot 

pub struct QqPlot { /* private fields */ }

A normal Q–Q plot as a drawable series (coordinate space (f64, f64) = (theoretical quantile, sample quantile)).

Points that fall on the reference line indicate the sample is consistent with a normal distribution; systematic departures (curvature, S-shapes) reveal skew or heavy tails.

Implementations

impl QqPlot

pub fn from_data(data: &[f64]) -> Result<Self, StatsError>

Build from a raw data sample. Uses Blom plotting positions ((i - 3/8) / (n + 1/4)) for the theoretical quantiles and a reference line through the sample/theoretical first and third quartiles (like R’s qqline).

Errors

• StatsError::EmptyInput if no finite values remain.

pub fn reference_line(self, show: bool) -> Self

Show/hide the reference line.

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

Set the marker color.

pub fn marker_radius(self, radius: u32) -> Self

Set the marker radius in pixels.

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

Set the reference-line width in pixels.

Trait Implementations

impl Clone for QqPlot

fn clone(&self) -> QqPlot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QqPlot

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

Formats the value using the given formatter.

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

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 QqPlot

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