将边缘权重传递给networkx中的graphviz_layout [英] Passing edge weights to graphviz_layout in networkx

问题描述

每个人都找不到如何将权重列表的属性名称传递给networkx中的graphviz_layout.像这样:

everybody cannot find how to pass name of property of list of weights to graphviz_layout in networkx. Something like this:

nx.spring_layout(G, weight='weight.sum')

，但带有nx.graphviz_layout(G, ...).也许有人会知道吗?

but with nx.graphviz_layout(G, ...). Maybe somebody will know?

推荐答案

如果我对，您想指定哪个edge属性用作graphviz布局的边缘权重.从 NetworkX文档中我看不到这个可能.

If I got you right, you want to specify which edge attribute to use as edge weight for the graphviz layout. From the NetworkX docs I don't see that this is possible.

但是，graphciz中的布局算法使用weight属性.这就是它的意思:

However, the weight attribute is used by the layout algorithms in graphviz. This is what it says:

重量

边缘的重量.以点为单位，重量越重，边缘越短，越直和越垂直.对于其他布局，较大的权重鼓励布局使边缘长度更接近 len 属性.

Weight of edge. In dot, the heavier the weight, the shorter, straighter and more vertical the edge is. For other layouts, a larger weight encourages the layout to make the edge length closer to that specified by the len attribute.

使用此方法，您可以设置网络中每个边缘的边缘权重:

With this you can set the edge weight for each edge in the network:

g = nx.Graph()
g.add_edge(1, 2, {'weight': 4})

或

g.add_edge(1, 2)
g.edge[1][2]['weight'] = 4

或

g[1][2]['weight'] = 4

如果要为边缘设置默认权重，则可以将其作为 argument传递给graphviz程序您要在graphviz_layout中使用的:

If you want to set a default weight for the edges, you can pass this as an argument to the graphviz program that you want to use in graphviz_layout:

nx.graphviz_layout(g, prog='dot', args='-Eweight=4')

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