diff --git a/.gitignore b/.gitignore
index 000c541..be4c767 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,6 @@ dist
 .coverage
 *.pyc
 *.egg-info
+.cov-py*
+coverage-py*
+junit-py*
diff --git a/CHANGELOG b/CHANGELOG
index 1ff7b68..c4e1780 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+V 1.6.3 UNRELEASED
+	Add show_x_labels option to remove them and the x axis.
+	Set print_values to False by default.
+	Fix secondary serie text values when None in data. (#192)
+
 V 1.6.2
 	Add margin_top, margin_right, margin_bottom, margin_left options which defaults to margin. (thanks djt)
 	Update django mime parameter from mimetype to content_type. (thanks kswiat)
diff --git a/demo/moulinrouge/tests.py b/demo/moulinrouge/tests.py
index 9d10abd..83d63a3 100644
--- a/demo/moulinrouge/tests.py
+++ b/demo/moulinrouge/tests.py
@@ -305,9 +305,9 @@ def get_test_routes(app):
         chart.y_label_rotation = 50
         chart.add('1', [30, 20, -2])
         chart.add(10 * '1b', [-4, 50, 6], secondary=True)
-        chart.add(10 * '2b', [3, 30, -1], secondary=True)
+        chart.add(10 * '2b', [None, 10, 20], secondary=True)
         chart.add('2', [8, 21, -0])
-        chart.add('3', [1, 2, 3])
+        chart.add('3', [None, 20, 10])
         chart.add('3b', [-1, 2, -3], secondary=True)
         return chart.render_response()
 
@@ -548,4 +548,25 @@ def get_test_routes(app):
             6])
         return c.render_response()
 
+    @app.route('/test/sparkline/<chart>')
+    def test_sparkline_for(chart):
+        graph = CHARTS_BY_NAME[chart](**dict(
+            width=200,
+            height=50,
+            show_dots=False,
+            show_legend=False,
+            show_y_labels=False,
+            show_x_labels=False,
+            spacing=0,
+            margin=5,
+            explicit_size=True
+        ))
+        graph.add('1', [1, 3, 12, 3, 4, None, 9])
+        graph.add('2', [7, -4, 10, None, 8, 3, 1])
+        graph.add('3', [7, -14, -10, None, 8, 3, 1])
+        graph.add('4', [7, 4, -10, None, 8, 3, 1])
+        graph.x_labels = ('a', 'b', 'c', 'd', 'e', 'f', 'g')
+        graph.legend_at_bottom = True
+        return graph.render_response()
+
     return list(sorted(filter(lambda x: x.startswith('test'), locals())))
diff --git a/pygal/__init__.py b/pygal/__init__.py
index 0c320cf..fbb9b56 100644
--- a/pygal/__init__.py
+++ b/pygal/__init__.py
@@ -21,7 +21,7 @@ Pygal -  A python svg graph plotting library
 
 """
 
-__version__ = '1.6.2'
+__version__ = '1.6.3'
 import sys
 from pygal.config import Config
 from pygal.ghost import Ghost, REAL_CHARTS
diff --git a/pygal/config.py b/pygal/config.py
index 8a0a807..f85bf3a 100644
--- a/pygal/config.py
+++ b/pygal/config.py
@@ -285,6 +285,9 @@ class Config(CommonConfig):
         None, int, "Label",
         "Mark n evenly distributed labels as major.")
 
+    show_x_labels = Key(
+        True, bool, "Label", "Set to false to hide x-labels")
+
     show_minor_x_labels = Key(
         True, bool, "Label", "Set to false to hide x-labels not marked major")
 
@@ -324,7 +327,9 @@ class Config(CommonConfig):
 
     missing_value_fill_truncation = Key(
         "x", str, "Look",
-        "Filled series with missing x and/or y values at the end of a series are closed at the first value with a missing 'x' (default), 'y' or 'either'")
+        "Filled series with missing x and/or y values at the end of a series "
+        "are closed at the first value with a missing "
+        "'x' (default), 'y' or 'either'")
 
     # Value #
     human_readable = Key(
@@ -351,7 +356,8 @@ class Config(CommonConfig):
         "{'type': 'cardinal', 'c': .5}", int)
 
     mode = Key(
-        None, str, "Value", "Sets the mode to be used. (Currently only supported on box plot)",
+        None, str, "Value", "Sets the mode to be used. "
+        "(Currently only supported on box plot)",
         "May be %s" % ' or '.join(["1.5IQR", "extremes"]))
 
     order_min = Key(
@@ -388,7 +394,7 @@ class Config(CommonConfig):
     no_data_font_size = Key(64, int, "Text", "No data text font size")
 
     print_values = Key(
-        True, bool,
+        False, bool,
         "Text", "Print values when graph is in non interactive mode")
 
     print_zeroes = Key(
diff --git a/pygal/ghost.py b/pygal/ghost.py
index b191400..27019d8 100644
--- a/pygal/ghost.py
+++ b/pygal/ghost.py
@@ -191,6 +191,7 @@ class Ghost(object):
             height=50,
             show_dots=False,
             show_legend=False,
+            show_x_labels=False,
             show_y_labels=False,
             spacing=0,
             margin=5,
diff --git a/pygal/graph/base.py b/pygal/graph/base.py
index d9d3e95..8d6d68c 100644
--- a/pygal/graph/base.py
+++ b/pygal/graph/base.py
@@ -110,24 +110,24 @@ class BaseGraph(object):
                         self.margin.right += (
                             self.spacing + w + self.legend_box_size)
 
-        for xlabels in (self._x_labels, self._x_2nd_labels):
-            if xlabels:
-                h, w = get_texts_box(
-                    map(lambda x: truncate(x, self.truncate_label or 25),
-                        cut(xlabels)),
-                    self.label_font_size)
-                self._x_labels_height = self.spacing + max(
-                    w * sin(rad(self.x_label_rotation)), h)
-                if xlabels is self._x_labels:
-                    self.margin.bottom += self._x_labels_height
-                else:
-                    self.margin.top += self._x_labels_height
-                if self.x_label_rotation:
-                    self.margin.right = max(
-                        w * cos(rad(self.x_label_rotation)),
-                        self.margin.right)
-        if not self._x_labels:
-            self._x_labels_height = 0
+        self._x_labels_height = 0
+        if (self._x_labels or self._x_2nd_labels) and self.show_x_labels:
+            for xlabels in (self._x_labels, self._x_2nd_labels):
+                if xlabels:
+                    h, w = get_texts_box(
+                        map(lambda x: truncate(x, self.truncate_label or 25),
+                            cut(xlabels)),
+                        self.label_font_size)
+                    self._x_labels_height = self.spacing + max(
+                        w * sin(rad(self.x_label_rotation)), h)
+                    if xlabels is self._x_labels:
+                        self.margin.bottom += self._x_labels_height
+                    else:
+                        self.margin.top += self._x_labels_height
+                    if self.x_label_rotation:
+                        self.margin.right = max(
+                            w * cos(rad(self.x_label_rotation)),
+                            self.margin.right)
 
         if self.show_y_labels:
             for ylabels in (self._y_labels, self._y_2nd_labels):
diff --git a/pygal/graph/graph.py b/pygal/graph/graph.py
index 9ddadd6..5a26986 100644
--- a/pygal/graph/graph.py
+++ b/pygal/graph/graph.py
@@ -118,7 +118,7 @@ class Graph(BaseGraph):
 
     def _x_axis(self):
         """Make the x axis: labels and guides"""
-        if not self._x_labels:
+        if not self._x_labels or not self.show_x_labels:
             return
         axis = self.svg.node(self.nodes['plot'], class_="axis x%s" % (
             ' always_show' if self.show_x_guides else ''
@@ -423,8 +423,9 @@ class Graph(BaseGraph):
 
     def _rescale(self, points):
         return [
-            (x, self._scale_diff + (y - self._scale_min_2nd) * self._scale)
-            for x, y in points if y is not None]
+            (x, self._scale_diff + (y - self._scale_min_2nd) * self._scale
+             if y is not None else None)
+            for x, y in points]
 
     def _tooltip_data(self, node, value, x, y, classes=None):
         self.svg.node(node, 'desc', class_="value").text = value