在pygraph中设置图形属性
在pygraph中设置图形属性
提问于 2011-04-13 01:12:48
我在documentation of pygraph中找到了如何更改attributes of the nodes and the edges，但没有找到有关如何更改图形属性的帮助。
我试过了，但没走运：
gr = graph()
gr.__setattr__('aspect',2)你有什么建议吗？
谢谢!
更新我也尝试过：
gr = graph()
gr.__setattr__('rotate',90)
gr.rotate = 90
gr.color = 'red'
setattr(gr,'bgcolor','red')使用不同的想法更新网站中的2个示例代码，以更改属性：
#!/usr/bin/env python
# Copyright (c) 2007-2008 Pedro Matiello <pmatiello@gmail.com>
# License: MIT (see COPYING file)
# Import graphviz
import sys
sys.path.append('..')
sys.path.append('/usr/lib/graphviz/python/')
sys.path.append('/usr/lib64/graphviz/python/')
import gv
# Import pygraph
from pygraph.classes.graph import graph
from pygraph.classes.digraph import digraph
from pygraph.algorithms.searching import breadth_first_search
from pygraph.readwrite.dot import write
# Graph creation
gr = graph()
gr.__setattr__('rotate',90)
gr.rotate = 90
gr.color = 'red'
setattr(gr,'bgcolor','red')
# Add nodes and edges
gr.add_nodes(["Portugal","Spain","France","Germany","Belgium","Netherlands","Italy"])
gr.add_nodes(["Switzerland","Austria","Denmark","Poland","Czech Republic","Slovakia","Hungary"])
gr.add_nodes(["England","Ireland","Scotland","Wales"])
gr.add_edge(("Portugal", "Spain"))
gr.add_edge(("Spain","France"))
gr.add_edge(("France","Belgium"))
gr.add_edge(("France","Germany"))
gr.add_edge(("France","Italy"))
gr.add_edge(("Belgium","Netherlands"))
gr.add_edge(("Germany","Belgium"))
gr.add_edge(("Germany","Netherlands"))
gr.add_edge(("England","Wales"))
gr.add_edge(("England","Scotland"))
gr.add_edge(("Scotland","Wales"))
gr.add_edge(("Switzerland","Austria"))
gr.add_edge(("Switzerland","Germany"))
gr.add_edge(("Switzerland","France"))
gr.add_edge(("Switzerland","Italy"))
gr.add_edge(("Austria","Germany"))
gr.add_edge(("Austria","Italy"))
gr.add_edge(("Austria","Czech Republic"))
gr.add_edge(("Austria","Slovakia"))
gr.add_edge(("Austria","Hungary"))
gr.add_edge(("Denmark","Germany"))
gr.add_edge(("Poland","Czech Republic"))
gr.add_edge(("Poland","Slovakia"))
gr.add_edge(("Poland","Germany"))
gr.add_edge(("Czech Republic","Slovakia"))
gr.add_edge(("Czech Republic","Germany"))
gr.add_edge(("Slovakia","Hungary"))
# Draw as PNG
dot = write(gr)
gvv = gv.readstring(dot)
gv.layout(gvv,'dot')
gv.render(gvv,'png','europe.png')回答 4
Stack Overflow用户
回答已采纳
发布于 2011-04-13 23:37:15
所以，我自己做了更多的研究，我发现pygraphviz提供了我需要的东西。下面是使用pygraphviz并接受属性的pygraph示例。它也更短，因为如果所有节点都通过边连接，则不必指定节点。
#!/usr/bin/env python
# Copyright (c) 2007-2008 Pedro Matiello <pmatiello@gmail.com>
# License: MIT (see COPYING file)
# Import pygraphviz
import pygraphviz as pgv
# Graph creation and setting of attributes
gr = pgv.AGraph(rotate='90',bgcolor='lightgray')
# Add nodes and edges
gr.add_edge(("Portugal", "Spain"))
gr.add_edge(("Spain","France"))
gr.add_edge(("France","Belgium"))
gr.add_edge(("France","Germany"))
gr.add_edge(("France","Italy"))
gr.add_edge(("Belgium","Netherlands"))
gr.add_edge(("Germany","Belgium"))
gr.add_edge(("Germany","Netherlands"))
gr.add_edge(("England","Wales"))
gr.add_edge(("England","Scotland"))
gr.add_edge(("Scotland","Wales"))
gr.add_edge(("Switzerland","Austria"))
gr.add_edge(("Switzerland","Germany"))
gr.add_edge(("Switzerland","France"))
gr.add_edge(("Switzerland","Italy"))
gr.add_edge(("Austria","Germany"))
gr.add_edge(("Austria","Italy"))
gr.add_edge(("Austria","Czech Republic"))
gr.add_edge(("Austria","Slovakia"))
gr.add_edge(("Austria","Hungary"))
gr.add_edge(("Denmark","Germany"))
gr.add_edge(("Poland","Czech Republic"))
gr.add_edge(("Poland","Slovakia"))
gr.add_edge(("Poland","Germany"))
gr.add_edge(("Czech Republic","Slovakia"))
gr.add_edge(("Czech Republic","Germany"))
gr.add_edge(("Slovakia","Hungary"))
# Draw as PNG
gr.layout(prog='dot')
gr.draw('europe.png')Stack Overflow用户
发布于 2013-02-09 07:47:27
显然，您可以使用gv.setv()在图形上设置属性。
import gv
g = gv.digraph('19261920')
gv.setv(g, 'overlap', 'compress')我通过检查/usr/include/graphviz/gv.i上的gv.py接口定义文件找到了gv.setv()
在interwebz上搜索"import gv" overlap setv，我找到了this old post，它演示了gv.setv()的用法。
我找到了这个包含更多关于setv的文档的PDF gv_python man page。
对于这么简单的事情来说，这是相当多的侦察工作，是吗？
Stack Overflow用户
发布于 2011-04-13 01:21:40
我不知道pygraph，但我认为在python中设置属性的方式是：
setattr(object, attr, value)
setattr(gr, 'aspect', 2)我的意思是，您已经尝试过gr.aspect = 2，对吧？
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原文链接：
https://stackoverflow.com/questions/5639049
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