Matplotlib - _tkinter.TclError：屏幕距离错误“320.0”[关闭]

Question

File "main.py", line 52, in <module>
    r2n(name)

  File "C:\Users\Riki\Documents\Universita\Erasmus\Personalization and Metadata modeling 02817\Final Project\friends_followers__redis_to_networkx.py", line 69, in r2n

    **nx.draw_spring(g,node_size=50,node_color='#32CD32',node_shape='o',edge_color='.1',with_labels=True,width=0.5)**

  File "C:\Python27\lib\site-packages\networkx-1.6-py2.7.egg\networkx\drawing\nx_pylab.py", line 876, in draw_spring
    draw(G,spring_layout(G),**kwargs)

  File "C:\Python27\lib\site-packages\networkx-1.6-py2.7.egg\networkx\drawing\nx_pylab.py", line 124, in draw
    cf=pylab.gcf()

  File "C:\Python27\lib\site-packages\matplotlib\pyplot.py", line 369, in gcf
    return figure()

  File "C:\Python27\lib\site-packages\matplotlib\pyplot.py", line 343, in figure
    **kwargs)

  File "C:\Python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 81, in new_figure_manager
    canvas = FigureCanvasTkAgg(figure, master=window)

  File "C:\Python27\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 188, in __init__
    self._tkcanvas.create_image(w/2, h/2, image=self._tkphoto)

  File "C:\Python27\lib\lib-tk\Tkinter.py", line 2198, in create_image
    return self._create('image', args, kw)

  File "C:\Python27\lib\lib-tk\Tkinter.py", line 2189, in _create
    *(args + self._options(cnf, kw))))

**_tkinter.TclError: bad screen distance "320.0"**

您好，我正在为 Windows 64 位开发 Python 2.7。 突然出现了这个问题，但我的代码应该没问题，因为以前可以工作（没有任何变化，图是可见的）。

我认为这是图书馆的问题，我该怎么办？

Answer 1

在创建画布项目之前尝试将坐标转换为 int。例如：

self._tkcanvas.create_image(int(w/2), int(h/2), image=self._tkphoto)

---

我非常感谢这个答案，因为它对我帮助很大；我希望我可以添加一个单独的答案，但我不能因为它已关闭 - 所以发布一个编辑：

一个对我有用且不需要更改matplotlib 库文件的解决方案是简单地为override a method 创建一个新类，两个有问题的方法是__init__ 和resize（奇怪的是，我所需要的只是超载resize，甚至不必在那里进行修复，它就开始为我工作了吗？）

无论如何，请注意以下内容是从 Python2.7 Matplotlib 复制的 - 您最好先检查本地 matplotlib 版本，然后从那里复制：

# copy of /usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py
# with fix:
class FigureCanvasTkAggFix(FigureCanvasTkAgg):
  def __init__(self, figure, master=None, resize_callback=None):
    matplotlib.backends.backend_tkagg.FigureCanvasAgg.__init__(self, figure)
    self._idle = True
    t1,t2,w,h = self.figure.bbox.bounds
    w, h = int(w), int(h)
    self._tkcanvas = tk.Canvas(
      master=master, width=w, height=h, borderwidth=4)
    self._tkphoto = tk.PhotoImage(
      master=self._tkcanvas, width=w, height=h)
    self._tkcanvas.create_image(int(w/2), int(h/2), image=self._tkphoto) # fix
    self._resize_callback = resize_callback
    self._tkcanvas.bind("<Configure>", self.resize)
    self._tkcanvas.bind("<Key>", self.key_press)
    self._tkcanvas.bind("<Motion>", self.motion_notify_event)
    self._tkcanvas.bind("<KeyRelease>", self.key_release)
    for name in "<Button-1>", "<Button-2>", "<Button-3>":
      self._tkcanvas.bind(name, self.button_press_event)
    for name in "<ButtonRelease-1>", "<ButtonRelease-2>", "<ButtonRelease-3>":
      self._tkcanvas.bind(name, self.button_release_event)
    for name in "<Button-4>", "<Button-5>":
      self._tkcanvas.bind(name, self.scroll_event)
    root = self._tkcanvas.winfo_toplevel()
    root.bind("<MouseWheel>", self.scroll_event_windows)
    self._master = master
    self._tkcanvas.focus_set()
    self.sourced = dict()
    def on_idle(*ignore):
      self.idle_event()
      return True
  def resize(self, event):
    width, height = event.width, event.height
    printse("WH", width, height, "\n")
    if self._resize_callback is not None:
      self._resize_callback(event)
    # compute desired figure size in inches
    dpival = self.figure.dpi
    winch = width/dpival
    hinch = height/dpival
    self.figure.set_size_inches(winch, hinch)
    self._tkcanvas.delete(self._tkphoto)
    self._tkphoto = tk.PhotoImage(
      master=self._tkcanvas, width=width, height=height)
    self._tkcanvas.create_image(width/2,height/2,image=self._tkphoto)
    self.resize_event()
    self.show()