Matplotlib on pycharm与远程SSH解释器

Question

我使用pycharm与远程解释器。

当我尝试使用matplotlib时，我得到以下错误:

>>> import matplotlib.pyplot as plt
Backend TkAgg is interactive backend. Turning interactive mode on.
Failed to enable GUI event loop integration for 'tk'
Traceback (most recent call last):
  File "/home/donbeo/.pycharm_helpers/pydev/pydev_console_utils.py", line 498, in do_enable_gui
    enable_gui(guiname)
  File "/home/donbeo/.pycharm_helpers/pydev/pydev_ipython/inputhook.py", line 509, in enable_gui
    return gui_hook(app)
  File "/home/donbeo/.pycharm_helpers/pydev/pydev_ipython/inputhook.py", line 262, in enable_tk
    app = _TK.Tk()
  File "/usr/lib/python3.4/tkinter/__init__.py", line 1808, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment variable
>>> plt.plot([1,2,3])
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/IPython/core/interactiveshell.py", line 2821, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-6-e426dd61f8f7>", line 1, in <module>
    plt.plot([1,2,3])
  File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 2980, in plot
    ax = gca()
  File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 803, in gca
    ax =  gcf().gca(**kwargs)
  File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 450, in gcf
    return figure()
  File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 423, in figure
    **kwargs)
  File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_tkagg.py", line 79, in new_figure_manager
    return new_figure_manager_given_figure(num, figure)
  File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_tkagg.py", line 87, in new_figure_manager_given_figure
    window = Tk.Tk()
  File "/usr/lib/python3.4/tkinter/__init__.py", line 1808, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment variable
>>> plt.show()

怎么解?

Answer 1

我有同样的问题，并通过更改为非交互式后端来修复它:

import matplotlib
matplotlib.use('Agg')

Answer 2

首先，需要将X11连接转发到本地机器(linux为ssh -X ..., windows可以使用VcXsrv并在ssh客户端中设置转发)。

接下来，在运行配置中设置DISPLAY环境变量，如下所示:https://stackoverflow.com/a/32945380/2708478

之后，plt.show()将显示本地机器上的绘图