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use plotters::prelude::*;
const OUT_FILE_NAME: &'static str = "plotters-doc-data/histogram.png";
fn main() -> Result<(), Box<dyn std::error::Error>> {
let root = BitMapBackend::new(OUT_FILE_NAME, (640, 480)).into_drawing_area();
root.fill(&WHITE)?;
let mut chart = ChartBuilder::on(&root)
.x_label_area_size(35)
.y_label_area_size(40)
.margin(5)
.caption("Histogram Test", ("sans-serif", 50.0))
.build_cartesian_2d((0u32..10u32).into_segmented(), 0u32..10u32)?;
chart
.configure_mesh()
.disable_x_mesh()
.bold_line_style(&WHITE.mix(0.3))
.y_desc("Count")
.x_desc("Bucket")
.axis_desc_style(("sans-serif", 15))
.draw()?;
let data = [
0u32, 1, 1, 1, 4, 2, 5, 7, 8, 6, 4, 2, 1, 8, 3, 3, 3, 4, 4, 3, 3, 3,
];
chart.draw_series(
Histogram::vertical(&chart)
.style(RED.mix(0.5).filled())
.data(data.iter().map(|x: &u32| (*x, 1))),
)?;
// 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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