2017-07-31 71 views
0

尝试在直接连接到rpi3的屏幕上显示UI,mainy实时数据图形和统计信息。

Getting started with Vispy

使用一些示例代码中试图显示任何东西,但运行示例代码时,我只能得到一个警告消息:

“警告:QXcbConnection:无法连接到显示”

据我了解,我已经安装了所有的依赖numpy,matlibplot,pyqt5等。假设在视频后面的rpi上启用opwnGL How to Enable OpenGL in Raspberry Pi 不能理解主要问题。首先是有可能在树莓上使用vispy,并有任何建议,我如何连接到我的代码显示?

示例代码:

import numpy as np 
from vispy import app 
from vispy import gloo 
c = app.Canvas(keys='interactive') 
vertex = """ 
attribute vec2 a_position; 
void main (void) 
{ 
    gl_Position = vec4(a_position, 0.0, 1.0); 
} 
""" 

也试过的例子从Matplotlib Animation Tutorial

但是,这也结束了一个错误: “_thinker.TclError:coulnt连接到显示”

import numpy as np 
from matplotlib import pyplot as plt 
from matplotlib import animation 
// First set up the figure, the axis, and the plot element we want to animate 
fig = plt.figure() 
ax = plt.axes(xlim=(0, 2), ylim=(-2, 2)) 
line, = ax.plot([], [], lw=2) 
// initialization function: plot the background of each frame 
def init(): 
    line.set_data([], []) 
return line, 
// animation function. This is called sequentially 
def animate(i): 
    x = np.linspace(0, 2, 1000) 
    y = np.sin(2 * np.pi * (x - 0.01 * i)) 
    line.set_data(x, y) 
    return line, 
// call the animator. blit=True means only re-draw the parts that have changed. 
anim = animation.FuncAnimation(fig, animate, init_func=init, 
          frames=200, interval=20, blit=True) 
anim.save('basic_animation.mp4', fps=30, extra_args=['-vcodec', 'libx264']) 
plt.show() 
+0

只想保留更新: 通过使用easy_install更新pyqt5安装来解决它。以前安装的版本(通过sudo apt-get install python3.pyqt5)无效 – kitaps

回答

0

只是想要留下更新:通过使用easy_install更新pyqt5安装来解决它。以前安装的版本(通过sudo apt-get install python3.pyqt5)没有工作