Allow the dimension of text plots to be set

Author: milliams

examples/histogram_text.rs

@@ -4,5 +4,5 @@ fn main() {
     let data = [0.3, 0.5, 6.4, 5.3, 3.6, 3.6, 3.5, 7.5, 4.0];
     let h = plotlib::histogram::Histogram::from_slice(&data, 10);
     let v = plotlib::view::ContinuousView::new().add(&h);
-    println!("{}", plotlib::page::Page::single(&v).to_text().unwrap());
+    println!("{}", plotlib::page::Page::single(&v).dimensions(60, 15).to_text().unwrap());
 }

src/page.rs

@@ -77,9 +77,10 @@ impl<'a> Page<'a> {
     Render the plot to an `String`
     */
     pub fn to_text(&self) -> Result<String> {
+        let (width, height) = self.dimensions;
         // TODO compose multiple views into a plot
         let view = self.views[0];
-        view.to_text(90, 30)
+        view.to_text(width, height)
     }
 
     /**