利用Python语言框架Django和Echarts实现知识图谱可视化的代码
时间: 2024-05-01 18:16:11 浏览: 198
首先需要安装Django和Echarts的Python库:
```
pip install django
pip install pyecharts
```
然后创建一个Django项目:
```
django-admin startproject knowledge_graph_visualization
```
在该项目目录下创建一个app:
```
cd knowledge_graph_visualization
python manage.py startapp visualization
```
在app目录下创建一个视图函数:
```python
from django.shortcuts import render
from pyecharts import options as opts
from pyecharts.charts import Graph
def knowledge_graph(request):
nodes = [
{"name": "Python", "symbolSize": 20},
{"name": "Django", "symbolSize": 20},
{"name": "Echarts", "symbolSize": 20},
{"name": "Visualization", "symbolSize": 20},
]
links = [
{"source": "Python", "target": "Django"},
{"source": "Python", "target": "Echarts"},
{"source": "Django", "target": "Visualization"},
{"source": "Echarts", "target": "Visualization"},
]
c = (
Graph()
.add("", nodes, links, repulsion=8000)
.set_global_opts(title_opts=opts.TitleOpts(title="Knowledge Graph Visualization"))
)
return render(request, 'visualization/knowledge_graph.html', {'myechart': c.render_embed()})
```
在app目录下创建一个html模板文件knowledge_graph.html:
```html
{% extends 'base.html' %}
{% block content %}
<div id="main" style="width:100%;height:500px;"></div>
{{ myechart|safe }}
{% endblock %}
```
在项目目录下创建一个基础模板文件base.html:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>{% block title %} {% endblock %}</title>
{% block css %}
{% endblock %}
{% block js %}
{% endblock %}
</head>
<body>
{% block content %}
{% endblock %}
{% block js %}
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/echarts/4.9.0/echarts.min.js"></script>
{% endblock %}
</body>
</html>
```
最后,在项目目录下的urls.py文件中添加路由:
```python
from django.urls import path
from visualization.views import knowledge_graph
urlpatterns = [
path('knowledge_graph/', knowledge_graph, name='knowledge_graph'),
]
```
完成上述步骤后,启动Django项目,访问路由/knowledge_graph/即可看到知识图谱的可视化界面。
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