Step 0: 使用新的 virtualenv 环境
建议使用 1.11.4 版本的 Django
$ virtualenv --no-site-packages pyecharts-env $ source pyecharts-env/bin/activate $ pip install django==1.11.4 $ pip install pyecharts
Step 1: 新建一个 django 项目
$ django-admin startproject myechartsite
创建一个应用程序
$ python manage.py startapp myfirstvis $ ls db.sqlite3 manage.py myechartsite myfirstvis
在 myechartsite/settings.py 中注册应用程序
# myechartsite/settings.py
INSTALLED_APPS = [
‘django.contrib.admin‘,
‘django.contrib.auth‘,
‘django.contrib.contenttypes‘,
‘django.contrib.sessions‘,
‘django.contrib.messages‘,
‘django.contrib.staticfiles‘,
‘myfirstvis‘ # <---
]
我们先编辑 urls.py.这文件在 Django 里的功能是把前段的 HTTP 需求和后台服务函数挂钩。在 Step3，我们再引入后端服务函数
1 # myfirstvis/urls.py 2 from django.conf.urls import url 3 4 from . import views 5 6 urlpatterns = [ 7 url(r‘^$‘, views.index, name=‘index‘), 8 ]
在 myechartsite/urls.py 中新增 ‘myfirstvis.urls‘
1 myechartsite/urls.py 2 from django.conf.urls import include, url 3 from django.contrib import admin 4 5 urlpatterns = [ 6 url(r‘^admin/‘, admin.site.urls), 7 url(r‘myfirstvis/‘, include(‘myfirstvis.urls‘)) # <--- 8 ]
Step 2: 处理视图功能部分
将下列代码保存到 myfirstvis/views.py 中。
1 from __future__ import unicode_literals
2 import math
3
4 from django.http import HttpResponse
5 from django.template import loader
6 from pyecharts import Line3D
7
8
9 REMOTE_HOST = "https://pyecharts.github.io/assets/js"
10
11
12 def index(request):
13 template = loader.get_template(‘myfirstvis/pyecharts.html‘)
14 l3d = line3d()
15 context = dict(
16 myechart=l3d.render_embed(),
17 host=REMOTE_HOST,
18 script_list=l3d.get_js_dependencies()
19 )
20 return HttpResponse(template.render(context, request))
21
22
23 def line3d():
24 _data = []
25 for t in range(0, 25000):
26 _t = t / 1000
27 x = (1 + 0.25 * math.cos(75 * _t)) * math.cos(_t)
28 y = (1 + 0.25 * math.cos(75 * _t)) * math.sin(_t)
29 z = _t + 2.0 * math.sin(75 * _t)
30 _data.append([x, y, z])
31 range_color = [
32 ‘#313695‘, ‘#4575b4‘, ‘#74add1‘, ‘#abd9e9‘, ‘#e0f3f8‘, ‘#ffffbf‘,
33 ‘#fee090‘, ‘#fdae61‘, ‘#f46d43‘, ‘#d73027‘, ‘#a50026‘]
34 line3d = Line3D("3D line plot demo", width=1200, height=600)
35 line3d.add("", _data, is_visualmap=True,
36 visual_range_color=range_color, visual_range=[0, 30],
37 is_grid3D_rotate=True, grid3D_rotate_speed=180)
38 return line3d
cript_list 是 Page() 类渲染网页所需要依赖的 echarts js 库，依赖的库的数量取决于所要渲染的图形种类。
host 是 echarts js 库的地址，默认提供的地址为 https://pyecharts.github.io/assets/js 当然，如果你愿意你也可以改变这个地址，先克隆 https://github.com/pyecharts/assets 然后将 js 文件夹挂载在你自己的服务器上即可。
Step 3: 为项目提供自己的模板
Windows 系统
在 myfirstvis 目录下，新建 templates/myfirstvis 子目录
myfirstvis 目录
─ myfirstvis
├── admin.py
├── apps.py
├── __init__.py
├── migrations
│ ├── __init__.py
├── models.py
├── templates
│ └── myfirstvis
│ └── pyecharts.html
├── tests.py
├── urls.py
└── views.py
将下面 html 模板代码保存为 pyecharts.html，请确保 pyecharts.html 文件的绝对路径为 <project root>/myfirstvis/templates/myfirstvis
1 <!-- myfirstvis/templates/pyecharts.html -->
2 <!DOCTYPE html>
3 <html>
4
5 <head>
6 <meta charset="utf-8">
7 <title>Proudly presented by PycCharts</title>
8 {% for jsfile_name in script_list %}
9 <script src="{{ host }}/{{ jsfile_name }}.js"></script>
10 {% endfor %}
11 </head>
12
13 <body>
14 {{ myechart|safe }}
15 </body>
16
17 </html>
Step 4: 运行项目
$ cd myechartsite $ python manage.py runserver You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions. Run ‘python manage.py migrate‘ to apply them. August 08, 2017 - 05:48:38 Django version 1.11.4, using settings ‘myechartsite.settings‘ Starting development server at http://127.0.0.1:8000/ Quit the server with CONTROL-C.
访问 http://localhost:8000/myfirstvis/，你就可以看到酷炫的 3D 图了
小结
看到了吧，只需要简单的几步就可以使用 pyecharts 创建可视化的图表。Django 官方教程需要七步的这里我们三步就搞定了。
原文地址：https://www.cnblogs.com/Python6359/p/9123995.html