I'm using matplotlib 1.0.1. I have the following simple script to plot a
surface:
-----
from numpy import linspace, sin, cos, meshgrid
from matplotlib.pyplot import figure, show, xlabel, ylabel
from matplotlib import cm
from mpl_toolkits.mplot3d import Axes3D
n = 35
x = linspace(-5, 5, n)
y = linspace(0, 10, n)
X, Y = meshgrid(x, y)
Z = X*sin(X)*cos(0.25*Y)
fig = figure()
ax = fig.gca(projection='3d')
ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.copper)
xlabel('x')
ylabel('y')
show()
-----
It works fine--many thanks to all the folks working on the 3D plots!
But notice that Axes3D is imported from matplotlib.mplot3d, but never
explicitly used. If I comment out that import, however, I get the following
traceback:
-----
Traceback (most recent call last):
File "surf_demo.py", line 15, in <module>
ax = fig.gca(projection='3d')
File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/figure.py",
line 965, in gca
return self.add_subplot(111, **kwargs)
File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/figure.py",
line 675, in add_subplot
projection_class = get_projection_class(projection)
File
"/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib/projections/__init__.py",
line 61, in get_projection_class
raise ValueError("Unknown projection '%s'" % projection)
ValueError: Unknown projection '3d'
-----
Is this expected?
Warren
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