Hi, I have three variables I would like to plot using plot_surface but I
keep getting the error given at the bottom. Anyone know what I am doing
wrong?? My code is as follows,
fig3 = plt.figure()
ax = Axes3D(fig3)
X = np.zeros((78,1))
Y = np.zeros((78,1))
Z = np.zeros((78,1))
for p in range(len(data)):
X[p,0] = data[p][1] #distance
Y[p,0] = data[p][3] #azimuth
Z[p,0] = data[p][4] #snr
X, Y = np.meshgrid(X, Y)
surf = ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet)
ValueError Traceback (most recent call last)
/home/davcra/python_scripts/plot_snr_az.py in <module>()
48 Z[p,0] = data[p][4] #snr
49 X, Y = np.meshgrid(X, Y)
---> 50 surf = ax.plot_surface(X, Y, Z, rstride=1, cstride=1, cmap=cm.jet)
51 #fig.colorbar(surf, shrink=0.5, aspect=5)
52 #plt.show()
/usr/lib64/python2.6/site-packages/mpl_toolkits/mplot3d/axes3d.pyc in
plot_surface(self, X, Y, Z, *args, **kwargs)
616 normals.append(np.cross(v1, v2))
617
--> 618 polyc = art3d.Poly3DCollection(polys, *args, **kwargs)
619 if cmap is not None:
620 polyc.set_array(np.array(avgz))
/usr/lib64/python2.6/site-packages/mpl_toolkits/mplot3d/art3d.pyc in
__init__(self, verts, *args, **kwargs)
282 '''
283
--> 284 PolyCollection.__init__(self, verts, *args, **kwargs)
285 self._zsort = 1
286 self._sort_zpos = None
/usr/lib64/python2.6/site-packages/matplotlib/collections.pyc in
__init__(self, verts, sizes, closed, **kwargs)
666 Collection.__init__(self,**kwargs)
667 self._sizes = sizes
--> 668 self.set_verts(verts, closed)
669 __init__.__doc__ = cbook.dedent(__init__.__doc__) %
artist.kwdocd
670
/usr/lib64/python2.6/site-packages/mpl_toolkits/mplot3d/art3d.pyc in
set_verts(self, verts, closed)
304 def set_verts(self, verts, closed=True):
305 '''Set 3D vertices.'''
--> 306 self.get_vector(verts)
307 # 2D verts will be updated at draw time
308 PolyCollection.set_verts(self, [], closed)
/usr/lib64/python2.6/site-packages/mpl_toolkits/mplot3d/art3d.pyc in
get_vector(self, segments3d)
297 segis.append((si, ei))
298 si = ei
--> 299 xs, ys, zs = zip(*points)
300 ones = np.ones(len(xs))
301 self._vec = np.array([xs, ys, zs, ones])
ValueError: need more than 0 values to unpack
WARNING: Failure executing file: <plot_snr_az.py>
thanks,
David
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