88 lines
2.7 KiB
Rust
88 lines
2.7 KiB
Rust
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use plotters::prelude::*;
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let root_area =
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BitMapBackend::new("plotters-doc-data/sample.png", (1024, 768)).into_drawing_area();
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root_area.fill(&WHITE)?;
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let root_area = root_area.titled("Image Title", ("sans-serif", 60))?;
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let (upper, lower) = root_area.split_vertically(512);
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let x_axis = (-3.4f32..3.4).step(0.1);
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let mut cc = ChartBuilder::on(&upper)
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.margin(5)
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.set_all_label_area_size(50)
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.caption("Sine and Cosine", ("sans-serif", 40))
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.build_cartesian_2d(-3.4f32..3.4, -1.2f32..1.2f32)?;
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cc.configure_mesh()
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.x_labels(20)
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.y_labels(10)
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.disable_mesh()
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.x_label_formatter(&|v| format!("{:.1}", v))
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.y_label_formatter(&|v| format!("{:.1}", v))
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.draw()?;
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cc.draw_series(LineSeries::new(x_axis.values().map(|x| (x, x.sin())), &RED))?
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.label("Sine")
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.legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &RED));
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cc.draw_series(LineSeries::new(
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x_axis.values().map(|x| (x, x.cos())),
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&BLUE,
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))?
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.label("Cosine")
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.legend(|(x, y)| PathElement::new(vec![(x, y), (x + 20, y)], &BLUE));
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cc.configure_series_labels().border_style(&BLACK).draw()?;
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/*
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// It's possible to use a existing pointing element
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cc.draw_series(PointSeries::<_, _, Circle<_>>::new(
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(-3.0f32..2.1f32).step(1.0).values().map(|x| (x, x.sin())),
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5,
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Into::<ShapeStyle>::into(&RGBColor(255,0,0)).filled(),
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))?;*/
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// Otherwise you can use a function to construct your pointing element yourself
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cc.draw_series(PointSeries::of_element(
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(-3.0f32..2.1f32).step(1.0).values().map(|x| (x, x.sin())),
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5,
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ShapeStyle::from(&RED).filled(),
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&|coord, size, style| {
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EmptyElement::at(coord)
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+ Circle::new((0, 0), size, style)
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+ Text::new(format!("{:?}", coord), (0, 15), ("sans-serif", 15))
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},
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))?;
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let drawing_areas = lower.split_evenly((1, 2));
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for (drawing_area, idx) in drawing_areas.iter().zip(1..) {
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let mut cc = ChartBuilder::on(&drawing_area)
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.x_label_area_size(30)
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.y_label_area_size(30)
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.margin_right(20)
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.caption(format!("y = x^{}", 1 + 2 * idx), ("sans-serif", 40))
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.build_cartesian_2d(-1f32..1f32, -1f32..1f32)?;
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cc.configure_mesh().x_labels(5).y_labels(3).draw()?;
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cc.draw_series(LineSeries::new(
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(-1f32..1f32)
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.step(0.01)
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.values()
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.map(|x| (x, x.powf(idx as f32 * 2.0 + 1.0))),
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&BLUE,
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))?;
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}
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Ok(())
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}
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#[test]
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fn entry_point() {
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main().unwrap()
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}
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