1 use plotters::coord::Shift;
2 use plotters::prelude::*;
3
draw_chart<B: DrawingBackend>(root: &DrawingArea<B, Shift>) -> DrawResult<(), B>4 fn draw_chart<B: DrawingBackend>(root: &DrawingArea<B, Shift>) -> DrawResult<(), B> {
5 let mut chart = ChartBuilder::on(root)
6 .caption(
7 "Relative Size Example",
8 ("sans-serif", (5).percent_height()),
9 )
10 .x_label_area_size((10).percent_height())
11 .y_label_area_size((10).percent_width())
12 .margin(5)
13 .build_cartesian_2d(-5.0..5.0, -1.0..1.0)?;
14
15 chart
16 .configure_mesh()
17 .disable_x_mesh()
18 .disable_y_mesh()
19 .label_style(("sans-serif", (3).percent_height()))
20 .draw()?;
21
22 chart.draw_series(LineSeries::new(
23 (0..1000)
24 .map(|x| x as f64 / 100.0 - 5.0)
25 .map(|x| (x, x.sin())),
26 &RED,
27 ))?;
28 Ok(())
29 }
30
31 const OUT_FILE_NAME: &'static str = "plotters-doc-data/relative_size.png";
main() -> Result<(), Box<dyn std::error::Error>>32 fn main() -> Result<(), Box<dyn std::error::Error>> {
33 let root = BitMapBackend::new(OUT_FILE_NAME, (1024, 768)).into_drawing_area();
34
35 root.fill(&WHITE)?;
36
37 let (left, right) = root.split_horizontally((70).percent_width());
38
39 draw_chart(&left)?;
40
41 let (upper, lower) = right.split_vertically(300);
42
43 draw_chart(&upper)?;
44 draw_chart(&lower)?;
45 let root = root.shrink((200, 200), (150, 100));
46 draw_chart(&root)?;
47
48 // To avoid the IO failure being ignored silently, we manually call the present function
49 root.present().expect("Unable to write result to file, please make sure 'plotters-doc-data' dir exists under current dir");
50 println!("Result has been saved to {}", OUT_FILE_NAME);
51
52 Ok(())
53 }
54 #[test]
entry_point()55 fn entry_point() {
56 main().unwrap()
57 }
58
