Struct Linspace

pub struct Linspace<T: Ranged, S: Clone, R: LinspaceRoundingMethod<T::ValueType>>
where
    T::ValueType: Add<S, Output = T::ValueType> + PartialOrd + Clone,
{ /* private fields */ }

The coordinate combinator that transform a continous coordinate to a discrete coordinate to a discrete coordinate by a giving step.

For example, range 0f32..100f32 is a continuous coordinate, thus this prevent us having a histogram on it since Plotters doesn’t know how to segment the range into buckets. In this case, to get a histogram, we need to split the original range to a set of discrete buckets (for example, 0.5 per bucket).

The linspace decorate abstracting this method. For example, we can have a discrete coordinate: (0f32..100f32).step(0.5).

Linspace also supports different types of bucket matching method - This configuration alters the behavior of DiscreteCoord::index_of for Linspace coord spec

• Flooring, the value falls into the nearst bucket smaller than it. See Linspace::use_floor
• Round, the value falls into the nearst bucket. See Linearspace::use_round
• Ceiling, the value falls into the nearst bucket larger than itself. See Linspace::use_ceil
• Exact Matchting, the value must be exactly same as the butcket value. See Linspace::use_exact

Implementations

impl<T: Ranged, S: Clone, R: LinspaceRoundingMethod<T::ValueType>> Linspace<T, S, R>

where T::ValueType: Add<S, Output = T::ValueType> + PartialOrd + Clone,

pub fn use_ceil(self) -> Linspace<T, S, Ceil<T::ValueType>>

Set the linspace use the round up method for value matching

• returns: The newly created linspace that uses new matching method

pub fn use_floor(self) -> Linspace<T, S, Floor<T::ValueType>>

Set the linspace use the round down method for value matching

• returns: The newly created linspace that uses new matching method

pub fn use_round(self) -> Linspace<T, S, Round<T::ValueType, S>>

where T::ValueType: Sub<T::ValueType, Output = S>, S: PartialOrd,

Set the linspace use the best match method for value matching

• returns: The newly created linspace that uses new matching method

pub fn use_exact(self) -> Linspace<T, S, Exact<T::ValueType>>

where T::ValueType: Sub<T::ValueType, Output = S>, S: PartialOrd,

Set the linspace use the exact match method for value matching

• returns: The newly created linspace that uses new matching method

Trait Implementations

impl<T: Clone + Ranged, S: Clone + Clone, R: Clone + LinspaceRoundingMethod<T::ValueType>> Clone for Linspace<T, S, R>

where T::ValueType: Add<S, Output = T::ValueType> + PartialOrd + Clone + Clone,

fn clone(&self) -> Linspace<T, S, R>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Ranged, S: Clone, R: LinspaceRoundingMethod<T::ValueType>> DiscreteRanged for Linspace<T, S, R>

where T::ValueType: Add<S, Output = T::ValueType> + PartialOrd + Clone,

fn size(&self) -> usize

Get the number of element in the range Note: we assume that all the ranged discrete coordinate has finite value

fn index_of(&self, value: &T::ValueType) -> Option<usize>

Map a value to the index

fn from_index(&self, idx: usize) -> Option<T::ValueType>

Reverse map the index to the value

fn values(&self) -> DiscreteValueIter<'_, Self>

where Self: Sized,

Return a iterator that iterates over the all possible values

fn previous(&self, value: &Self::ValueType) -> Option<Self::ValueType>

Returns the previous value in this range

fn next(&self, value: &Self::ValueType) -> Option<Self::ValueType>

Returns the next value in this range

impl<T: Ranged, S: Clone, R: LinspaceRoundingMethod<T::ValueType>> Ranged for Linspace<T, S, R>

where T::ValueType: Add<S, Output = T::ValueType> + PartialOrd + Clone,

type FormatOption = NoDefaultFormatting

This marker decides if Plotters default ValueFormatter implementation should be used. This assicated type can be one of follow two types:

type ValueType = <T as Ranged>::ValueType

The type of this value in this range specification

fn range(&self) -> Range<T::ValueType>

Get the range of this value

fn map(&self, value: &T::ValueType, limit: (i32, i32)) -> i32

This function maps the value to i32, which is the drawing coordinate

fn key_points<Hint: KeyPointHint>(&self, hint: Hint) -> Vec<T::ValueType>

This function gives the key points that we can draw a grid based on this

fn axis_pixel_range(&self, limit: (i32, i32)) -> Range<i32>

This function provides the on-axis part of its range

impl<T, R, S, RM> ValueFormatter<T> for Linspace<R, S, RM>

where R: Ranged<ValueType = T> + ValueFormatter<T>, RM: LinspaceRoundingMethod<T>, T: Add<S, Output = T> + PartialOrd + Clone, S: Clone,

fn format(value: &T) -> String

Format the value