sympy/sympy-matplotlib2.patch

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--- sympy/plotting/plot.py.orig 2016-03-08 11:35:33.000000000 -0700
+++ sympy/plotting/plot.py 2017-01-16 17:27:38.093969621 -0700
@@ -383,7 +383,7 @@ class Line2DBaseSeries(BaseSeries):
np = import_module('numpy')
c = self.line_color
if hasattr(c, '__call__'):
- f = np.vectorize(c)
+ f = np.vectorize(c, [np.float64])
arity = len(getargspec(c)[0])
if arity == 1 and self.is_parametric:
x = self.get_parameter_points()
@@ -700,7 +700,7 @@ class SurfaceBaseSeries(BaseSeries):
np = import_module('numpy')
c = self.surface_color
if isinstance(c, Callable):
- f = np.vectorize(c)
+ f = np.vectorize(c, [np.float64])
arity = len(getargspec(c)[0])
if self.is_parametric:
variables = list(map(centers_of_faces, self.get_parameter_meshes()))