Financial charts.
Your data.

FROM BARS TO A CHART

A widget in your application.

Create a chart once, give it your bars, and show it on every egui frame. The same Rust code runs natively and in WebAssembly.

This guide follows main (0.3 in development), using egui/eframe 0.37. Install the Git dependency below. Published release 0.2.0 uses egui/eframe 0.33.3.

Build your first chart →

cargo add egui-charts --git https://github.com/userFRM/egui-charts --branch main
cargo add eframe@0.37 chrono@0.4

src/main.rs

// src/main.rs
use chrono::{TimeDelta, Utc};
use eframe::egui;
use egui_charts::{Chart, model::{Bar, BarData}};

fn main() -> eframe::Result {
    let start = Utc::now() - TimeDelta::minutes(2);
    let bars = vec![
        Bar::new(start, 100.0, 103.0, 99.0, 102.0, 800.0),
        Bar::new(start + TimeDelta::minutes(1),
                 102.0, 104.0, 101.0, 103.0, 600.0),
    ];
    let mut chart = Chart::new(BarData::from_bars(bars));
    chart.set_symbol("SAMPLE");

    eframe::run_ui_native("My chart", Default::default(), move |ui, _| {
        egui::CentralPanel::default().show(ui, |ui| chart.show(ui));
    })
}

Learn the chart

InstallationChoose main (0.3 in development, egui 0.37) or the published 0.2.0 API (egui 0.33.3).

First chartPut a chart on screen, keep its state, replace history and update bars.

Builder tutorialConnect historical and streaming data, handle events, and save chart state.

main API (rustdoc)Browse types and methods for egui 0.37, with rustdoc's own symbol search.

Chart concepts

Series and chart typesChoose a renderer, add a series, and select shared or independent pricing.

Price scaleUse normal, logarithmic, percentage or indexed prices.

Time scale and whitespaceShare UTC viewports and reserve future whitespace. Use Bar::whitespace for missing observations.

Panes and markersPlace series and studies in panes, resize them, and attach event markers to bars.

Build your workspace

Studies and extensionsAdd custom studies, series primitives, drawing tools and themes.

RecipesPage history, stream bars, connect HTTP endpoints, save drawings and synchronize charts.

InteractionRespond to clicks, crosshair movement and visible-range changes.

StatusSee what works today and which capabilities still have gaps.

Your application owns market data connections, credentials, accounts and storage. egui-charts supplies the chart, analysis and host interfaces.