Trait Points 

pub trait Points {
    // Required methods
    fn len(&self) -> usize;
    fn x(&self, index: usize) -> f64;
    fn y(&self, index: usize) -> f64;

    // Provided method
    fn is_empty(&self) -> bool { ... }
}

A series of points, in ascending x (a chart finds the visible ones by binary search): a line, or the bars of a bar series. A y that is not finite is a gap.

Points out of order do not break anything, but they draw wrong and cost more: each step back restarts the line, and the step forward after it is drawn across every column it spans.

Required Methods

fn len(&self) -> usize

How many points there are.

fn x(&self, index: usize) -> f64

The x of point index: never below the one before, never NaN.

fn y(&self, index: usize) -> f64

The y of point index.

Provided Methods

fn is_empty(&self) -> bool

Whether there are none.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl Points for (&[f64], &[f64])

x values and y values side by side; as long as the shorter.

fn len(&self) -> usize

fn x(&self, index: usize) -> f64

fn y(&self, index: usize) -> f64

impl Points for [(f64, f64)]

fn len(&self) -> usize

fn x(&self, index: usize) -> f64

fn y(&self, index: usize) -> f64

Implementors