我在linux
中使用ssh
命令在另一臺機器上運行我的python腳本。我也運行這個命令:RuntimeError:無效的顯示變量
source ~/.bashrc
登錄到另一臺機器後,爲了在新機器上定義正確的路徑。即使我試圖按照this question中的說明定義後端,我仍然收到運行以下python代碼行的錯誤消息。
>>> import matplotlib
>>> import pylab as plt
>>> matplotlib.use('Agg')
>>> import numpy as np
>>> x=np.arange(0,2,0.001)
>>> y=np.sin(x)**2+4*np.cos(x)
>>> fig = plt.figure()
>>> plt.plot(x,y,'r.')
錯誤消息
This probably means that Tcl wasn't installed properly.
Traceback (most recent call last):
File "Systematic_Optimised.py", line 513, in <module>
fig = plt.figure()
File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py", line 435, in figure
**kwargs)
File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 47, in new_figure_manager
return new_figure_manager_given_figure(num, thisFig)
File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 54, in new_figure_manager_given_figure
canvas = FigureCanvasQTAgg(figure)
File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 72, in __init__
FigureCanvasQT.__init__(self, figure)
File "/vol/aibn84/data2/zahra/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4.py", line 68, in __init__
_create_qApp()
File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt5.py", line 138, in _create_qApp
raise RuntimeError('Invalid DISPLAY variable')
RuntimeError: Invalid DISPLAY variable
任何建議如何解決這個問題
做'回聲$ DISPLAY'你的機器上。你的操作系統是什麼,你是通過ssh運行的嗎? – 9000
如果您必須使用遠程計算機上的顯示器,則需要使用帶'-X'參數的ssh。 –
@KlausD。我用'ssh -X username @ host'命令登錄。 – Dalek