Struct ErrorBar

pub struct ErrorBar<K, V, O: ErrorBarOrient<K, V>> { /* private fields */ }

Available on crate feature errorbar only.

An error bar, which visualizes the minimum, average, and maximum of a dataset.

Unlike crate::series::Histogram, the ErrorBar code does not classify or aggregate data. These operations must be done before building error bars.

Examples

use plotters::prelude::*;
let data = [(1.0, 3.3), (2., 2.1), (3., 1.5), (4., 1.9), (5., 1.0)];
let drawing_area = SVGBackend::new("error_bars_vertical.svg", (300, 200)).into_drawing_area();
drawing_area.fill(&WHITE).unwrap();
let mut chart_builder = ChartBuilder::on(&drawing_area);
chart_builder.margin(10).set_left_and_bottom_label_area_size(20);
let mut chart_context = chart_builder.build_cartesian_2d(0.0..6.0, 0.0..6.0).unwrap();
chart_context.configure_mesh().draw().unwrap();
chart_context.draw_series(data.map(|(x, y)| {
    ErrorBar::new_vertical(x, y - 0.4, y, y + 0.3, BLUE.filled(), 10)
})).unwrap();
chart_context.draw_series(data.map(|(x, y)| {
    ErrorBar::new_vertical(x, y + 1.0, y + 1.9, y + 2.4, RED, 10)
})).unwrap();

This code produces two series of five error bars each, showing minima, maxima, and average values:

ErrorBar::new_vertical() is used to create vertical error bars. Here is an example using ErrorBar::new_horizontal() instead:

Implementations

impl<K, V> ErrorBar<K, V, ErrorBarOrientV<K, V>>

pub fn new_vertical<S: Into<ShapeStyle>>( key: K, min: V, avg: V, max: V, style: S, width: u32, ) -> Self

Creates a vertical error bar. `

• key: Horizontal position of the bar
• min: Minimum of the data
• avg: Average of the data
• max: Maximum of the data
• style: Color, transparency, and fill of the error bar. See ShapeStyle for more information and examples.
• width: Width of the error marks in backend coordinates.

See ErrorBar for more information and examples.

impl<K, V> ErrorBar<K, V, ErrorBarOrientH<K, V>>

pub fn new_horizontal<S: Into<ShapeStyle>>( key: K, min: V, avg: V, max: V, style: S, width: u32, ) -> Self

Creates a horizontal error bar.

• key: Vertical position of the bar
• min: Minimum of the data
• avg: Average of the data
• max: Maximum of the data
• style: Color, transparency, and fill of the error bar. See ShapeStyle for more information and examples.
• width: Width of the error marks in backend coordinates.

See ErrorBar for more information and examples.

Trait Implementations

impl<K, V, O: ErrorBarOrient<K, V>, DB: DrawingBackend> Drawable<DB> for ErrorBar<K, V, O>

fn draw<I: Iterator<Item = BackendCoord>>( &self, points: I, backend: &mut DB, _: (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, K: Clone, V: Clone, O: ErrorBarOrient<K, V>> PointCollection<'a, (<O as ErrorBarOrient<K, V>>::XType, <O as ErrorBarOrient<K, V>>::YType)> for &'a ErrorBar<K, V, O>

type Point = (<O as ErrorBarOrient<K, V>>::XType, <O as ErrorBarOrient<K, V>>::YType)

The item in point iterator

type IntoIter = Vec<<&'a ErrorBar<K, V, O> as PointCollection<'a, (<O as ErrorBarOrient<K, V>>::XType, <O as ErrorBarOrient<K, V>>::YType)>>::Point>

The point iterator

fn point_iter(self) -> Self::IntoIter

framework to do the coordinate mapping