Matplotlib动画未按预期工作

Question

我正在用python中的matplotlib和MovieWriter一帧一帧地为球的路径设置动画。我希望球的路径在100帧的过程中画出它的线，因为最终的结果看起来像金色的（我的动画处理的唯一的线）线。然而，我最终得到一个不规则的移动线在我的动画mp4视频。我不能发布视频，但它的快照看起来像。这条线将端点从绘图周围的原点移开，但不会形成第一个图像中描述的连贯线。我做错什么了？我的代码在下面

FFMpegWriter = manimation.writers['ffmpeg'] metadata = dict(title='Movie Test', artist='Matplotlib', comment='Movie support!') writer = FFMpegWriter(fps=15, metadata=metadata) import glob #plt figure fig = plt.figure() #get specific file with data fn = glob.glob(r"C:\Users\Admin\Desktop\STATS_basketball_tracking\anon\train\specificfile") #plot image of the court img = plt.imread(r"C:\Users\Admin\Pictures\Capture4.png ") plt.imshow(img, zorder=0, extent=[0, 47, 0, 50]) tups = bball.stats_basketball.read_tuples(fn) positions = bball.stats_basketball.get_positions(tups) goals = bball.stats_basketball.get_goals(tups) ball = positions[0] #initial x and y coordinate (col 0= x-coordinates col 1= y-coordinates) x0 = ball[0,0] y0 = ball[0,1] lball, = plt.plot([x0], [y0], color="goldenrod") with writer.saving(fig, "writer_test.mp4", 100): for i in range(100): for row in ball[:,0]: for row1 in ball[:,1]: x0 = [int(row),0] y0 = [int(row1),1] lball.set_data(x0, y0) fig.canvas.draw() writer.grab_frame()