bland 0.2.0

Pure-Rust library for paper-ready, monochrome, hatch-patterned technical plots in the visual tradition of 1960s-80s engineering reports.
Documentation 
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use bland::{Figure, Marker, PaperSize, Stroke};

fn main() {
    // Two synthetic clusters with a fitted line.
    let cluster_a_x: Vec<f64> = (0..50).map(|i| 0.4 * i as f64 + 1.0).collect();
    let cluster_a_y: Vec<f64> = cluster_a_x
        .iter()
        .enumerate()
        .map(|(i, x)| 0.7 * x + 1.0 + ((i as f64 * 0.71) % 1.0 - 0.5) * 2.0)
        .collect();

    let cluster_b_x: Vec<f64> = (0..50).map(|i| 0.4 * i as f64 + 1.0).collect();
    let cluster_b_y: Vec<f64> = cluster_b_x
        .iter()
        .enumerate()
        .map(|(i, x)| 0.5 * x + 4.0 + ((i as f64 * 1.31 + 0.4) % 1.0 - 0.5) * 1.5)
        .collect();

    let fit_x = vec![1.0, 21.0];
    let fit_y = vec![1.7, 15.7];

    let fig = Figure::new()
        .size(PaperSize::A5Landscape)
        .title("Linear fit comparison")
        .xlabel("input")
        .ylabel("response")
        .scatter(&cluster_a_x, &cluster_a_y, |s| {
            s.label("control").marker(Marker::CircleOpen)
        })
        .scatter(&cluster_b_x, &cluster_b_y, |s| {
            s.label("treated").marker(Marker::TriangleFilled)
        })
        .line(&fit_x, &fit_y, |l| l.label("y = 0.7x + 1").stroke(Stroke::DashDot))
        .legend_bottom_right();

    std::fs::create_dir_all("out").expect("create out/");
    std::fs::write("out/scatter.svg", fig.to_svg()).expect("write svg");
    println!("wrote out/scatter.svg");
}