gpt4 book ai didi

python - 如何在终端中绘制图表

转载 作者:太空狗 更新时间:2023-10-30 00:21:52 30 4
gpt4 key购买 nike

我正在研究 ML/Theano,最近遇到了这个脚本:https://gist.github.com/notmatthancock/68d52af2e8cde7fbff1c9225b2790a7f玩起来很酷。和所有 ML 研究人员一样,我最近升级到服务器,虽然它更强大,但也给我带来了问题。

脚本很长,但以这段代码结束:

def plot_stuff(inputs, outputs, losses, net_func, n_hidden):
fig,axes = plt.subplots(1,2,figsize=(12,6))

axes[0].plot(np.arange(losses.shape[0])+1, losses)
axes[0].set_xlabel('iteration')
axes[0].set_ylabel('loss')
axes[0].set_xscale('log')
axes[0].set_yscale('log')

x,y = np.mgrid[inputs[:,0].min():inputs[:,0].max():51j, inputs[:,1].min():inputs[:,1].max():51j]
z = net_func( np.c_[x.flatten(), y.flatten()] ).reshape(x.shape)

axes[1].contourf(x,y,z, cmap=plt.cm.RdBu, alpha=0.6)
axes[1].plot(inputs[outputs==0,0], inputs[outputs==0,1], 'or')
axes[1].plot(inputs[outputs==1,0], inputs[outputs==1,1], 'sb')
axes[1].set_title('Percent missclassified: %0.2f%%' % (((net_func(inputs)>0.5) != outputs.astype(np.bool)).mean()*100))

fig.suptitle('Shallow net with %d hidden units'%n_hidden)
plt.show()

if __name__=='__main__':
n_hidden = 40
inputs, outputs = gen_data(n_samples_per_class=100)
losses, net_func = train_neural_network(inputs=inputs, outputs=outputs, n_hidden=n_hidden, n_iters=int(2000), learning_rate=0.1)
plot_stuff(inputs, outputs, losses, net_func, n_hidden)

生成此图表:

enter image description here当我试图在服务器上运行它时,服务器没有屏幕只有命令行,我可以预见到这个错误:

fedora@ip-173-33-18-911:~/scripting/spiral$ python spiral.py
Iteration 2000 / 2000, Loss: 0.172083
Traceback (most recent call last):
File "spiral.py", line 133, in <module>
plot_stuff(inputs, outputs, losses, net_func, n_hidden)
File "spiral.py", line 110, in plot_stuff
fig,axes = plt.subplots(1,2,figsize=(12,6))
File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 1046, in subplots
fig = figure(**fig_kw)
File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 423, in figure
**kwargs)
File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 79, in new_figure_manager
return new_figure_manager_given_figure(num, figure)
File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 87, in new_figure_manager_given_figure
window = Tk.Tk()
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1767, in __init__
self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment variable

有没有在命令行中显示图表和图形的方式/方法/功能?

最佳答案

termplotlib (我的一个小项目)在这里可能会派上用场。安装

pip install termplotlib

并生成像这样的终端图

import termplotlib as tpl
import numpy as np

x = np.linspace(0, 2*np.pi, 100)
y = np.sin(x) + x
fig = tpl.figure()
fig.plot(x, y, width=60, height=20)
fig.show()
  7 +---------------------------------------------------+
| |
6 | ** |
| ** |
| ** |
5 | ** |
| *** |
4 | **** |
| ***** |
3 | ***************** |
| **** |
2 | *** |
| *** |
| *** |
1 | ** |
|** |
0 +---------------------------------------------------+
0 1 2 3 4 5 6 7

关于python - 如何在终端中绘制图表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37288421/

30 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com