1 use plotters::prelude::*;
2
main() -> Result<(), Box<dyn std::error::Error>>3 fn main() -> Result<(), Box<dyn std::error::Error>> {
4 let root =
5 BitMapBackend::new("plotters-doc-data/twoscale.png", (1024, 768)).into_drawing_area();
6 root.fill(&WHITE)?;
7
8 let mut chart = ChartBuilder::on(&root)
9 .x_label_area_size(35)
10 .y_label_area_size(40)
11 .right_y_label_area_size(40)
12 .margin(5)
13 .caption("Dual Y-Axis Example", ("sans-serif", 50.0).into_font())
14 .build_cartesian_2d(0f32..10f32, (0.1f32..1e10f32).log_scale())?
15 .set_secondary_coord(0f32..10f32, -1.0f32..1.0f32);
16
17 chart
18 .configure_mesh()
19 .disable_x_mesh()
20 .disable_y_mesh()
21 .y_desc("Log Scale")
22 .y_label_formatter(&|x| format!("{:e}", x))
23 .draw()?;
24
25 chart
26 .configure_secondary_axes()
27 .y_desc("Linear Scale")
28 .draw()?;
29
30 chart
31 .draw_series(LineSeries::new(
32 (0..=100).map(|x| (x as f32 / 10.0, (1.02f32).powf(x as f32 * x as f32 / 10.0))),
33 &BLUE,
34 ))?
35 .label("y = 1.02^x^2")
36 .legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &BLUE));
37
38 chart
39 .draw_secondary_series(LineSeries::new(
40 (0..=100).map(|x| (x as f32 / 10.0, (x as f32 / 5.0).sin())),
41 &RED,
42 ))?
43 .label("y = sin(2x)")
44 .legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &RED));
45
46 chart
47 .configure_series_labels()
48 .background_style(&RGBColor(128, 128, 128))
49 .draw()?;
50
51 Ok(())
52 }
53 #[test]
entry_point()54 fn entry_point() {
55 main().unwrap()
56 }
57
