Confirmed using a fairly recent matplotlib checkout. Could you file a bug report? This is going to need some investigating.
As a side note though, the way you are updating the lines by calling `ax.plot` repeatedly, is bad form. You want to update the lines object itself, by calling its "set_data()" method. Also, move the call to `ax.legend()` to after calling `ax.plot` to avoid the warnings about unlabeled plotting objects. On Sat, Sep 26, 2015 at 3:46 AM, Shakthi Kannan <[email protected]> wrote: > Hi, > > I am trying to create poly lines using matplotlib and animation. My > code snippet is as follows: > > === BEGIN === > > import matplotlib as mpl > from mpl_toolkits.mplot3d import Axes3D > import numpy as np > import matplotlib.pyplot as plt > import matplotlib.animation as animation > > def update_line(num, x, y, z, l): > x.append(1.0) > y.append (2.0) > z.append(3.0) > print x, y, z > l, = ax.plot(x, y, z, label='Line') > return l, > > fig = plt.figure() > ax = fig.gca(projection='3d') > ax.set_xlabel('X') > ax.set_ylabel('Y') > ax.set_zlabel('Z') > ax.legend() > > x = [1.0, 2.0, 3.0] > y = [4.0, 7.0, 8.0] > z = [6.0, 9.0, 5.0] > > l, = ax.plot(x, y, z, label='Line') > > line_ani = animation.FuncAnimation(fig, update_line, 25, fargs=(x, y, > z, l), interval=2000, blit=True) > > plt.show() > > === END === > > The error that I get: > > === ERROR === > > $ python mat-3.py > > /usr/lib/pymodules/python2.7/matplotlib/axes.py:4747: UserWarning: No > labeled objects found. Use label='...' kwarg on individual plots. > warnings.warn("No labeled objects found. " > [1.0, 2.0, 3.0, 1.0] [4.0, 7.0, 8.0, 2.0] [6.0, 9.0, 5.0, 3.0] > Exception in Tkinter callback > Traceback (most recent call last): > File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1535, in __call__ > return self.func(*args) > File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 586, in callit > func(*args) > File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", > line 363, in idle_draw > self.draw() > File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", > line 348, in draw > FigureCanvasAgg.draw(self) > File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py", > line 451, in draw > self.figure.draw(self.renderer) > File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, > in draw_wrapper > draw(artist, renderer, *args, **kwargs) > File "/usr/lib/pymodules/python2.7/matplotlib/figure.py", line 1034, in > draw > func(*args) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/axes3d.py", > line 270, in draw > Axes.draw(self, renderer) > File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, > in draw_wrapper > draw(artist, renderer, *args, **kwargs) > File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 2086, in > draw > a.draw(renderer) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/art3d.py", > line 117, in draw > xs, ys, zs = proj3d.proj_transform(xs3d, ys3d, zs3d, renderer.M) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/proj3d.py", > line 194, in proj_transform > return proj_transform_vec(vec, M) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/proj3d.py", > line 153, in proj_transform_vec > vecw = np.dot(M, vec) > TypeError: can't multiply sequence by non-int of type 'float' > [1.0, 2.0, 3.0, 1.0, 1.0] [4.0, 7.0, 8.0, 2.0, 2.0] [6.0, 9.0, 5.0, 3.0, > 3.0] > Exception in Tkinter callback > Traceback (most recent call last): > File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1535, in __call__ > return self.func(*args) > File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", > line 276, in resize > self.show() > File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", > line 348, in draw > FigureCanvasAgg.draw(self) > File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_agg.py", > line 451, in draw > self.figure.draw(self.renderer) > File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, > in draw_wrapper > draw(artist, renderer, *args, **kwargs) > File "/usr/lib/pymodules/python2.7/matplotlib/figure.py", line 1034, in > draw > func(*args) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/axes3d.py", > line 270, in draw > Axes.draw(self, renderer) > File "/usr/lib/pymodules/python2.7/matplotlib/artist.py", line 55, > in draw_wrapper > draw(artist, renderer, *args, **kwargs) > File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 2086, in > draw > a.draw(renderer) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/art3d.py", > line 117, in draw > xs, ys, zs = proj3d.proj_transform(xs3d, ys3d, zs3d, renderer.M) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/proj3d.py", > line 194, in proj_transform > return proj_transform_vec(vec, M) > File "/usr/lib/pymodules/python2.7/mpl_toolkits/mplot3d/proj3d.py", > line 153, in proj_transform_vec > vecw = np.dot(M, vec) > TypeError: can't multiply sequence by non-int of type 'float' > > === END === > > I am using the basic_example.py as a template. > > http://matplotlib.org/1.4.1/examples/animation/basic_example.html > > What could I be missing? Appreciate any help in this regard, > > Thanks! > > SK > > -- > Shakthi Kannan > http://www.shakthimaan.com > > > ------------------------------------------------------------------------------ > _______________________________________________ > Matplotlib-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/matplotlib-users >
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