Struct MaturityScale 

pub struct MaturityScale {
    pub base_resolution: u32,
    pub minimum_range: u32,
    pub start: u32,
}

A horizontal scale of maturities in months, for yield curves, encoded with key_time.

Maturities read 3M below a year and 2Y or 2Y6M from a year on. The axis labels multiples of 10 years first, then of 5 and 3 years, whole years, half years, quarters and months, and draws the longest kind shown in bold.

The bars of a chart take one slot each whatever their keys, so a curve spaced by maturity needs a slot every month: give the main series the whitespace bars and draw each curve as a series of its own, placed on them by key.

Fields

base_resolution: u32

Months between neighbouring slots.

minimum_range: u32

Months the whitespace spans at least, from start.

start: u32

Maturity of the first slot in months.

Implementations

impl MaturityScale

pub fn whitespace(&self, last: f64) -> Vec<Bar>

Whitespace bars every base_resolution months from start up to last, the longest maturity on the chart, or up to minimum_range when that is later. Non-finite last values fall back to minimum_range; finite values are capped at 12,000 months (1,000 years) before comparison, without limiting minimum_range.

Trait Implementations

impl Clone for MaturityScale

fn clone(&self) -> MaturityScale

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MaturityScale

impl Debug for MaturityScale

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

Formats the value using the given formatter.

impl Default for MaturityScale

fn default() -> Self

Monthly slots over the first ten years.

impl Eq for MaturityScale

impl HorizontalScale for MaturityScale

fn tick_marks( &self, points: &[(DateTime<Utc>, usize)], layout: &TickMarkLayout, ) -> Vec<TickMark>

The marks to label among points, the key and logical index of each bar in view in order, extended into whitespace on both sides using the chart’s full-history time mapping. When the keys reach before the first bar, every index is shifted by the same number of slots, so only the order of the indices and their differences carry meaning. The renderer places each mark at its key and skips labels that would overlap.

fn format_crosshair(&self, key: DateTime<Utc>, _bar_seconds: i64) -> String

The crosshair label of key. bar_seconds is the duration of the bars in view, which the time scale uses for the precision of the clock.

impl PartialEq for MaturityScale

fn eq(&self, other: &MaturityScale) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MaturityScale