1 files changed, 66 insertions, 0 deletions
diff --git a/examples/normal-dist.rs b/examples/normal-dist.rs
new file mode 100644
index 0000000..65cf0e3
--- /dev/null
+++ b/examples/normal-dist.rs
@@ -0,0 +1,66 @@
+use plotters::prelude::*;
+
+use rand::SeedableRng;
+use rand_distr::{Distribution, Normal};
+use rand_xorshift::XorShiftRng;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let root =
+        BitMapBackend::new("plotters-doc-data/normal-dist.png", (1024, 768)).into_drawing_area();
+
+    root.fill(&WHITE)?;
+
+    let sd = 0.13;
+
+    let random_points: Vec<(f64, f64)> = {
+        let norm_dist = Normal::new(0.5, sd).unwrap();
+        let mut x_rand = XorShiftRng::from_seed(*b"MyFragileSeed123");
+        let mut y_rand = XorShiftRng::from_seed(*b"MyFragileSeed321");
+        let x_iter = norm_dist.sample_iter(&mut x_rand);
+        let y_iter = norm_dist.sample_iter(&mut y_rand);
+        x_iter.zip(y_iter).take(5000).collect()
+    };
+
+    let areas = root.split_by_breakpoints([944], [80]);
+
+    let mut x_hist_ctx = ChartBuilder::on(&areas[0])
+        .y_label_area_size(40)
+        .build_ranged(0u32..100u32, 0f64..0.5f64)?;
+    let mut y_hist_ctx = ChartBuilder::on(&areas[3])
+        .x_label_area_size(40)
+        .build_ranged(0f64..0.5f64, 0..100u32)?;
+    let mut scatter_ctx = ChartBuilder::on(&areas[2])
+        .x_label_area_size(40)
+        .y_label_area_size(40)
+        .build_ranged(0f64..1f64, 0f64..1f64)?;
+    scatter_ctx
+        .configure_mesh()
+        .disable_x_mesh()
+        .disable_y_mesh()
+        .draw()?;
+    scatter_ctx.draw_series(
+        random_points
+            .iter()
+            .map(|(x, y)| Circle::new((*x, *y), 2, GREEN.filled())),
+    )?;
+    let x_hist = Histogram::vertical(&x_hist_ctx)
+        .style(GREEN.filled())
+        .margin(0)
+        .data(
+            random_points
+                .iter()
+                .map(|(x, _)| ((x * 100.0) as u32, 0.002)),
+        );
+    let y_hist = Histogram::horizontal(&y_hist_ctx)
+        .style(GREEN.filled())
+        .margin(0)
+        .data(
+            random_points
+                .iter()
+                .map(|(_, y)| ((y * 100.0) as u32, 0.002)),
+        );
+    x_hist_ctx.draw_series(x_hist)?;
+    y_hist_ctx.draw_series(y_hist)?;
+
+    Ok(())
+}