对于iPython / Jupyter中的Matplotlib图,您可以将笔记本图绘制为内嵌
%matplotlib inline
如何为树的NLTK draw()做同样的事情?这是文档http://www.nltk.org/api/nltk.draw.html
答案 0 :(得分:8)
基于this回答:
import os
from IPython.display import Image, display
from nltk.draw import TreeWidget
from nltk.draw.util import CanvasFrame
def jupyter_draw_nltk_tree(tree):
cf = CanvasFrame()
tc = TreeWidget(cf.canvas(), tree)
tc['node_font'] = 'arial 13 bold'
tc['leaf_font'] = 'arial 14'
tc['node_color'] = '#005990'
tc['leaf_color'] = '#3F8F57'
tc['line_color'] = '#175252'
cf.add_widget(tc, 10, 10)
cf.print_to_file('tmp_tree_output.ps')
cf.destroy()
os.system('convert tmp_tree_output.ps tmp_tree_output.png')
display(Image(filename='tmp_tree_output.png'))
os.system('rm tmp_tree_output.ps tmp_tree_output.png')
有点慢,但做的工作。如果您是远程执行此操作,请不要忘记使用-X
密钥(例如ssh -X user@server.com
)运行ssh会话,以便Tk可以自行初始化(no display name and no $DISPLAY environment variable
- 出现错误)< / p>
UPD :看起来jupyter和nltk的最新版本可以很好地协同工作,所以你可以只做IPython.core.display.display(tree)
来获得一个漂亮的树形渲染嵌入到输出中。
答案 1 :(得分:0)
2019更新:
它在Jupyter Notebook上运行:
from nltk.tree import Tree
from IPython.display import display
tree = Tree.fromstring('(S (NP this tree) (VP (V is) (AdjP pretty)))')
IPython.core.display.display(tree)
要求: