問題描述

我正在構建一個包含許多節點的圖形，大約 3000 個.我編寫了一個簡單的 python 程序來使用 graphviz 來解決這個問題，但是它給了我分段錯誤，我不知道為什么，如果圖形太大或如果我錯過了什么.

I'm building a graph with many nodes, around 3000. I wrote a simple python program to do the trick with graphviz, but it gives me segmentation fault and I don't know why, if the graph is too big or if i'm missing something.

代碼是:

#!/usr/bin/env python

# Import graphviz
import sys
sys.path.append('..')
sys.path.append('/usr/lib/graphviz')
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()

file = open('nodes.dat', 'r')
line = file.readline()
while line:
        gr.add_nodes([line[0:-1]])
        line = file.readline()

file.close()
print 'nodes finished, beginning edges'

edges = open('edges_ok.dat', 'r')
edge = edges.readline()
while edge:
        gr.add_edge((edge.split()[0], edge.split()[1]))
        edge = edges.readline()

edges.close()
print 'edges finished'
print 'Drawing'

# Draw as PNG
dot = write(gr)
gvv = gv.readstring(dot)
gv.layout(gvv,'dot')
gv.render(gvv,'svg','graph.svg')

它在 gv.layout() 調用時崩潰.

這些文件類似于:節點:

The files are somthing like: nodes:

   node1
   node2
   node3

edges_ok:

   node1 node2
   node2 node3

推薦答案

我把布局類型從dot改成neato，問題就解決了.

I changed the layout type from dot to neato and that solved the problem.

我搜索了一下，似乎點布局在大圖上有點錯誤.

I searched a bit and it seems that the dot layout is a bit faulty on large graphs.

這篇關于graphviz 分段錯誤的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！