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use plotters::prelude::*;
const OUT_FILE_NAME: &'static str = "plotters-doc-data/twoscale.png";
fn main() -> Result<(), Box<dyn std::error::Error>> {
let root = BitMapBackend::new(OUT_FILE_NAME, (1024, 768)).into_drawing_area();
root.fill(&WHITE)?;
let mut chart = ChartBuilder::on(&root)
.x_label_area_size(35)
.y_label_area_size(40)
.right_y_label_area_size(40)
.margin(5)
.caption("Dual Y-Axis Example", ("sans-serif", 50.0).into_font())
.build_cartesian_2d(0f32..10f32, (0.1f32..1e10f32).log_scale())?
.set_secondary_coord(0f32..10f32, -1.0f32..1.0f32);
chart
.configure_mesh()
.disable_x_mesh()
.disable_y_mesh()
.y_desc("Log Scale")
.y_label_formatter(&|x| format!("{:e}", x))
.draw()?;
chart
.configure_secondary_axes()
.y_desc("Linear Scale")
.draw()?;
chart
.draw_series(LineSeries::new(
(0..=100).map(|x| (x as f32 / 10.0, (1.02f32).powf(x as f32 * x as f32 / 10.0))),
&BLUE,
))?
.label("y = 1.02^x^2")
.legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &BLUE));
chart
.draw_secondary_series(LineSeries::new(
(0..=100).map(|x| (x as f32 / 10.0, (x as f32 / 5.0).sin())),
&RED,
))?
.label("y = sin(2x)")
.legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &RED));
chart
.configure_series_labels()
.background_style(&RGBColor(128, 128, 128))
.draw()?;
// To avoid the IO failure being ignored silently, we manually call the present function
root.present().expect("Unable to write result to file, please make sure 'plotters-doc-data' dir exists under current dir");
println!("Result has been saved to {}", OUT_FILE_NAME);
Ok(())
}
#[test]
fn entry_point() {
main().unwrap()
}
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