diff --git a/demo/moulinrouge/__init__.py b/demo/moulinrouge/__init__.py
index 6bf99e2..929ccdc 100644
--- a/demo/moulinrouge/__init__.py
+++ b/demo/moulinrouge/__init__.py
@@ -71,7 +71,7 @@ def create_app():
         svgs = [url_for('all_svg', type=type, style=style)
                 for style in styles
                 for type in ('Bar', 'Line', 'XY', 'Pie', 'StackedBar',
-                          'HorizontalBar', 'HorizontalStackedBar')]
+                          'HorizontalBar', 'HorizontalStackedBar', 'Radar')]
         return render_template('svgs.jinja2',
                                svgs=svgs,
                                width=width,
diff --git a/pygal/graph/line.py b/pygal/graph/line.py
index 3f1d1d7..25eb916 100644
--- a/pygal/graph/line.py
+++ b/pygal/graph/line.py
@@ -4,6 +4,10 @@ from pygal.graph.graph import Graph
 class Line(Graph):
     """Line graph"""
 
+    def __init__(self, *args, **kwargs):
+        super(Line, self).__init__(*args, **kwargs)
+        self._line_close = False
+
     def _get_value(self, values, i):
         return str(values[i][1])
 
@@ -16,7 +20,8 @@ class Line(Graph):
             self.svg.node(dot, 'circle', cx=x, cy=y, r=2.5)
             self.svg.node(dot, 'text', x=x, y=y
             ).text = self._get_value(values, i)
-        self.svg.line(serie_node, view_values, class_='line', close=True)
+        self.svg.line(
+            serie_node, view_values, class_='line', close=self._line_close)
 
     def _compute(self):
         vals = [val for serie in self.series for val in serie.values]
diff --git a/pygal/graph/radar.py b/pygal/graph/radar.py
index 159111f..9d93e4b 100644
--- a/pygal/graph/radar.py
+++ b/pygal/graph/radar.py
@@ -7,6 +7,9 @@ from math import cos, sin, pi
 class Radar(Line):
     """Kiviat graph"""
 
+    def _get_value(self, values, i):
+        return str(values[i][0])
+
     def _set_view(self):
         self.view = PolarView(
             self.width - self.margin.x,
@@ -72,6 +75,7 @@ class Radar(Line):
         self._x_labels = self.x_labels and zip(self.x_labels, self._x_pos)
         self._y_labels = zip(map(str, self._y_pos), self._y_pos)
         self._box.xmin = self._box.ymin = - self._box.ymax
+        self._line_close = True
 
     def _plot(self):
         for serie in self.series:
diff --git a/pygal/view.py b/pygal/view.py
index 1060370..5886891 100644
--- a/pygal/view.py
+++ b/pygal/view.py
@@ -72,5 +72,6 @@ class View(object):
 class PolarView(View):
     def __call__(self, rtheta):
         r, theta = rtheta
+        r = max(r, 0)
         return super(PolarView, self).__call__(
             (r * cos(theta), r * sin(theta)))