diff --git a/pyltk/pgfplots/axis.py b/pyltk/pgfplots/axis.py
index d9019bf..43216c9 100644
--- a/pyltk/pgfplots/axis.py
+++ b/pyltk/pgfplots/axis.py
@@ -15,9 +15,9 @@ class axis(element):
 \\end{{axis}}"""
     }
 
-    def __init__(self, *args, parent=None, legend=True, label=None, **kargs):
+    def __init__(self, *args, parent=None, legend=True, label=None, **kwargs):
         super().__init__(parent, label=label)
-        self.options = kargs
+        self.options = kwargs
         self.legend = legend
         for arg in args:
             self.add(arg)
diff --git a/pyltk/pgfplots/coordinates_plot.py b/pyltk/pgfplots/coordinates_plot.py
index 281237a..9c8df92 100644
--- a/pyltk/pgfplots/coordinates_plot.py
+++ b/pyltk/pgfplots/coordinates_plot.py
@@ -11,5 +11,6 @@ class coordinates_plot(generic_plot):
     def format_data(self, data):
         pts = []
         for d in data:
-            pts.append('({}, {})'.format(*d))
+            pts.append('({}, {})'.format(
+                *self.format_values(d)))
         return 'coordinates {{{}}}'.format(''.join(pts))
diff --git a/pyltk/pgfplots/errorbars_plot.py b/pyltk/pgfplots/errorbars_plot.py
index 0af311e..fb86aec 100644
--- a/pyltk/pgfplots/errorbars_plot.py
+++ b/pyltk/pgfplots/errorbars_plot.py
@@ -5,7 +5,7 @@ from .generic_plot import generic_plot
 
 class errorbars_plot(generic_plot):
 
-    def __init__(self, legend, data, label=None, options=[]):
+    def __init__(self, legend, data, precision=5, label=None, options=[]):
         options = options + [
             'error bars/.cd', ('y dir', 'both'), ('y explicit')]
         super().__init__(legend, data, label=label, options=options)
@@ -20,5 +20,6 @@ class errorbars_plot(generic_plot):
                 p = d[2]
                 n = p
             rows.append('({x}, {y}) += (0, {p}) -= (0, {n})'.format(
-                x=x, y=y, p=p, n=n))
+                x=self.format_value(x), y=self.format_value(y),
+                p=self.format_value(p), n=self.format_value(n)))
         return 'coordinates {{{}}}'.format('\n'.join(rows))
diff --git a/pyltk/pgfplots/generic_plot.py b/pyltk/pgfplots/generic_plot.py
index 6b3af16..96112d1 100644
--- a/pyltk/pgfplots/generic_plot.py
+++ b/pyltk/pgfplots/generic_plot.py
@@ -11,11 +11,12 @@ class generic_plot(element):
         'content': """\\addplot{options} {data};"""
     }
 
-    def __init__(self, legend, data, label=None, options=[]):
+    def __init__(self, legend, data, precision=6, label=None, options=[]):
         super().__init__(label=label)
         self.legend = legend
         self.data = data
         self.options = options
+        self.precision = precision
 
     def format_options(self, options):
         if not options:
@@ -29,6 +30,12 @@ class generic_plot(element):
             'content': ', '.join(opts)
         })
 
+    def format_value(self, value):
+        return '{:.{prec}f}'.format(value, prec=self.precision)
+
+    def format_values(self, values):
+        return [self.format_value(value) for value in values]
+
     def content(self):
         return self.fmt().format('content', {
             'data': self.format_data(self.data),