charton 0.4.1

A high-level, layered charting system for Rust, designed for Polars-first data workflows and multi-backend rendering.
Documentation 
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use charton::prelude::*;
use polars::prelude::*;
use std::error::Error;

fn main() -> Result<(), Box<dyn Error>> {
    // Sample data for heatmap
    let df = df! [
        "x" => ["A", "B", "C", "A", "B", "C", "A", "B", "C"],
        "y" => ["X", "X", "X", "Y", "Y", "Y", "Z", "Z", "Z"],
        "value" => [1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0],
    ]?;

    // Create heatmap chart
    Chart::build(&df)?
        .mark_rect()?
        .encode((x("x"), y("y"), color("value")))?
        .save("docs/src/images/heatmap.svg")?;

    Ok(())
}