1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
use plotters::{
coord::ranged1d::{KeyPointHint, NoDefaultFormatting, ValueFormatter},
prelude::*,
};
const OUT_FILE_NAME: &'static str = "plotters-doc-data/customized_coord.svg";
struct CustomizedX(u32);
impl Ranged for CustomizedX {
type ValueType = u32;
type FormatOption = NoDefaultFormatting;
fn map(&self, value: &Self::ValueType, limit: (i32, i32)) -> i32 {
let size = limit.1 - limit.0;
((*value as f64 / self.0 as f64) * size as f64) as i32 + limit.0
}
fn range(&self) -> std::ops::Range<Self::ValueType> {
0..self.0
}
fn key_points<Hint: KeyPointHint>(&self, hint: Hint) -> Vec<Self::ValueType> {
if hint.max_num_points() < (self.0 as usize) {
return vec![];
}
(0..self.0).collect()
}
}
impl ValueFormatter<u32> for CustomizedX {
fn format_ext(&self, value: &u32) -> String {
format!("{} of {}", value, self.0)
}
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
let area = SVGBackend::new(OUT_FILE_NAME, (1024, 760)).into_drawing_area();
area.fill(&WHITE)?;
let mut chart = ChartBuilder::on(&area)
.set_all_label_area_size(50)
.build_cartesian_2d(CustomizedX(7), 0.0..10.0)?;
chart.configure_mesh().draw()?;
area.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()
}
|
