python - 在graphviz python包中难以分离等级
问题描述
我正在尝试使用 graphviz Python 包创建神经网络图,并且在尝试防止排名重叠等问题时遇到了问题。我在这篇文章中特别询问如何防止排名重叠。
这是我到目前为止的代码,
from graphviz import Graph
d = Graph(name="Network Graph",graph_attr={'rankdir':'TD'},engine='dot')
with d.subgraph() as s:
s.attr(rank='same')
s.node('density','density')
s.node('te','Elec. Temp.')
s.node('tr','Rad. Temp.')
s.node('alpha','alpha')
layer0 = ['density','te','tr','alpha']
layer1 = []
layer2 = []
layer3 = []
layer4 = []
layer5 = []
allLayers =[ layer0, layer1, layer2, layer3, layer4, layer5 ]
with d.subgraph() as s1:
s1.attr(rank='same')
for i in range(1,7):
layer1.append('a1%i'%i)
s1.node('a1%i'%i,'',tailclip='true',headclip='true')
with d.subgraph() as s2:
s2.attr(rank='same')
for i in range(1,10):
layer2.append('a1%i'%i)
s2.node('a1%i'%i,'',tailclip='true',headclip='true')
with d.subgraph() as s3:
s3.attr(rank='same')
for i in range(1,3):
layer3.append('a1%i'%i)
s3.node('a1%i'%i,'',tailclip='true',headclip='true')
with d.subgraph() as s4:
s4.attr(rank='same')
for i in range(1,7):
layer4.append('a1%i'%i)
s4.node('a1%i'%i,'',tailclip='true',headclip='true')
with d.subgraph() as s5:
s5.attr(rank='same')
for i in range(1,14):
layer5.append('a1%i'%i)
s5.node('a1%i'%i,'',tailclip='true',headclip='true')
edges = []
d.attr(rankdir="LR",splines='line',ranksep='2.0',overlap='false')
for n in range(0,len(allLayers)-1):
# d.attr(rankdir="LR",splines='line',ranksep='2.0',overlap='false')
for i in allLayers[n]:
for j in allLayers[n+1]:
# edges.append((i,j))
d.edge(i,j,directed="False")
print(d.source)
d.render('network.pdf',view=True)
这会产生这是图像
我不知道为什么我能够将等级/层 0 和 1 分开,但是所有后续层都堆叠在 layer1 的顶部。由于某种原因,该行d.attr(rankdir="LR",splines='line',ranksep='2.0',overlap='false')
似乎只应用一次,但是当我将该行放在for
循环内时,它的行为相同。
graphviz 包的文档还有很多不足之处,我能找到的 Python Graphviz 在互联网上的帮助很少。此外,显然不能d.attr(rankdir='LR')
在对象创建后立即放置Graph()
。它必须在创建所有节点之后放置,因此顺序显然很重要。
仅供参考:我也尝试overlap='false'
在不同的地方添加参数,但这并没有改变我使用它的方式。
我如何区分行列?使用 Graphviz 是否有任何其他一般提示,特别是在如何正确排序命令和设置属性方面?
解决方案
很高兴看到你解决了你的问题。但您可能会发现以下更改很有帮助。看看他们。
- 命名每个子图
- 为您的节点使用不同的名称(您已经意识到)
- 改用有向图
- 您实际上可以在实例化时设置所有图形属性
from graphviz import Digraph
d = Digraph(name="Network Graph",
graph_attr={'rankdir':'LR', 'splines':'line','ranksep':'2.0','overlap':'false'},
engine='dot')
with d.subgraph(name='s') as s:
s.node('density','density')
s.node('te','Elec. Temp.')
s.node('tr','Rad. Temp.')
s.node('alpha','alpha')
layer0 = ['density','te','tr','alpha']
layer1 = []
layer2 = []
layer3 = []
layer4 = []
layer5 = []
allLayers =[ layer0, layer1, layer2, layer3, layer4, layer5 ]
with d.subgraph(name='s1') as s1:
s1.attr(rank='same')
for i in range(1,7):
layer1.append('a1%i'%i)
s1.node('a1%i'%i,'',tailclip='true',headclip='true')
with d.subgraph(name='s2') as s2:
s2.attr(rank='same')
for i in range(1,10):
layer2.append('a2%i'%i)
s2.node('a2%i'%i,'',tailclip='true',headclip='true')
with d.subgraph(name='s3') as s3:
s3.attr(rank='same')
for i in range(1,3):
layer3.append('a3%i'%i)
s3.node('a3%i'%i,'',tailclip='true',headclip='true')
with d.subgraph(name='s4') as s4:
s4.attr(rank='same')
for i in range(1,7):
layer4.append('a4%i'%i)
s4.node('a4%i'%i,'',tailclip='true',headclip='true')
with d.subgraph(name='s5') as s5:
s5.attr(rank='same')
for i in range(1,14):
layer5.append('a5%i'%i)
s5.node('a5%i'%i,'',tailclip='true',headclip='true')
for n in range(0,len(allLayers)-1):
for i in allLayers[n]:
for j in allLayers[n+1]:
d.edge(i,j,directed="False")
# print(d.source)
# d.render('network.pdf',view=True)
您可能还会发现以下链接很有帮助
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