python-igraph顶点数 [英] python-igraph number of vertices

问题描述

我使用python-igraph软件包从存储在文件中的边上创建图形。我使用Graph.Read_Edgelist来读取边缘并创建我想要的图形。当我需要获取图形中顶点的数量时，我使用Graph.vcount（）函数，该函数应该返回顶点数量，这对我来说不是这种情况。对于像这样的文件：

  1 2 
 5 300 
  

这个函数返回301，这不是我正在寻找的！我需要它返回4，这是我的图形的实际顶点数。任何想法我可以做什么来解决这个问题？
解决方案

使用下面的函数而不是Graph.Read_Edgelist解决了我的问题：

  Graph.Read_Ncol（netFile，names = True，weights =if_present，directed = True）
  

通过设置name = True，该函数将节点数视为名称并解决vcount问题。 $ b

I am using python-igraph package to create a graph from my edges stored in a file. I use Graph.Read_Edgelist to read the edges and create my desired graph. When I need to get the number of vertices in my graph I use the Graph.vcount() function which is supposed to return number of vertices which is not the case for me. For a file like this:

1 2
5 300

This function returns 301 which is not what I am looking for ! I need it to return 4 which is the actual number of vertices of my graph. Any idea what I can do to solve this problem?

解决方案

Solved my problem using the following function instead of Graph.Read_Edgelist:

Graph.Read_Ncol(netFile, names=True, weights="if_present", directed=True)

By setting "name=True" the function considers the nodes numbers as their name and solves the vcount problem.

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