pyvis 图形重叠或不显示标签

Posted 2023-02-19

【中文标题】pyvis 图形重叠或不显示标签

【英文标题】：pyvis graph either overlapping, or not showing labels

【发布时间】：2021-07-27 05:19:19

【问题描述】：

我正在做一个项目，我从 python 存储库中绘制图表，我的代码真的很长，而不是重要的部分。但这里是，以防有人想尝试重现：

import ast
from radon.visitors import ComplexityVisitor
import re
import os
from pyvis.network import Network


class Vert:
    def __init__(self, name, id, size ,edges):
        self.name = name
        self.size = size
        self.edges = edges
        self.id = id
        
from pathlib import Path

rootDir = "/home/ask/Git/Zeeguu-API/"
directories = set()
# this is horrible
for file in Path(rootDir).rglob("*.py"):
    localDirs = str(file).split('/')
    directories.add(localDirs[-2])


def extract_importandClass_from_line(unline):

    x = re.search("^import (\S+)", unline) 
    x = re.search("^from (\S+)", unline) 
    return x.group(1)#, c.group(1).split('(')[0]
def extractClass(inline):
    c = re.search("^class (\S+)", inline) 
    return c.group(1).split('(')[0]


def importsAndClass(file):
    lines = [line for line in open(file)]
    classes = []
    all_imports = []
    for line in lines:
        try:
            imports = extract_importandClass_from_line(line)
            importEnd = imports.rsplit('.',1)[-1]
            importsFormatted = imports.replace('.', '/')
            if (importEnd not in directories):
                all_imports.append(importsFormatted)
        except:
            try:
                class1 = extractClass(line)
                classes.append(class1)
            except:
                continue  
  
    return all_imports, classes
net = Network(directed=True, , )
nodes = 
nodeNames = set()
counter = 0
for file in Path(rootDir).rglob("*.py"):
    # Opening file, and looking at contents
    f = open(file, "r")
    s = f.read()
    # analyzing complexity
    filename = str(file).replace(rootDir, "")
    analyzer = ComplexityVisitor.from_code(s)
    
    # getting the file name 
    splitFile = os.path.splitext(file.name)
    #getting imports    
    imports, classes = importsAndClass(file)

    nodeNames.add(str(filename))
    v = Vert(str(filename), counter,analyzer.total_complexity, imports)
    #creating vertex
    nodes[v.name] = v
    counter = counter + 1 
    net.add_node(v.id, label=v.name, size=v.size*2)

print("_________________________________")
for k, v in nodes.items():
    
    for i in v.edges:
        withPY = i + ".py"
        print(withPY)
        try:
            to = nodes[withPY].id 
            net.add_edge(v.id, to)
        except:
            print("could not add edge to:" + str(i))    
        


net.show("network.html")

现在，当我绘制我的图表时，它看起来像 this，事情超级堆积在彼此之上。 所以我想要一些方法来避免重叠。经过一番研究，我发现我应该添加这一行：

net.barnes_hut(overlap=1)

我愿意。这导致this，看起来好多了，但现在突然之间，节点上的所有标签都不见了！？。

为什么我的标签不见了？以及如何获得不重叠和标签？ 编辑：

我现在尝试了这个选项：

net.force_atlas_2based(overlap= 1)

这实际上是我想要的。现在唯一的问题是节点有时会相互碰撞，并开始不受控制地摆动

【参考方案1】：

尝试使用选项菜单并使用force_atlas_2based() 的不同重力特征（即gravitationalConstant 和centralGravity）。

您可以在保存的 .html 文件中拥有选项菜单：

# Graph construction ...
# ...
# Export to HTML file with physics manipulation options
net.show_buttons(filter_=["physics"])
net.show("graph_test.html")