Merge branch 'Th3Whit3Wolf-master'

Author: milliams

examples/letter_counter.rs

@@ -0,0 +1,31 @@
+use std::collections::btree_map::BTreeMap;
+use plotlib::style::BoxStyle;
+
+fn main() {
+    let mut data = Vec::new();
+    let message: &str = "This is a long message";
+    let mut count = BTreeMap::new();
+
+    for c in message.trim().to_lowercase().chars() {
+        if c.is_alphabetic() {
+            *count.entry(c).or_insert(0) += 1
+        }
+    }
+
+    println!("Number of occurences per character");
+    for (ch, count) in &count {
+        println!("{:?}: {}", ch, count);
+        let count = *count as f64;
+        data.push(plotlib::repr::BarChart::new(count).label(ch.to_string()));
+    }
+     // Add data to the view
+    let v = data
+        .into_iter()
+        .fold(plotlib::view::CategoricalView::new(), |view, datum| {
+            view.add(datum)
+        });
+
+    plotlib::page::Page::single(&v)
+        .save("barchart.svg")
+        .expect("saving svg");
+}