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自学教程:Django显示可视化图表的实践

51自学网 2021-10-30 22:41:20
  python
这篇教程Django显示可视化图表的实践写得很实用,希望能帮到您。

一 实战

1 Django_lab/urls.py

# -*- coding: utf-8 -*- from django.conf.urls import url,includefrom django.contrib import admin urlpatterns = [    url(r'^admin/', admin.site.urls),    # 定义图表url    url(r'^chart/', include('chart.urls')),]

2 在settings.py中添加图表应用

INSTALLED_APPS = [    'django.contrib.admin',    'django.contrib.auth',    'django.contrib.contenttypes',    'django.contrib.sessions',    'django.contrib.messages',    'django.contrib.staticfiles',    # 图表应用    'chart',]

3 chart/urls.py

# -*- coding: utf-8 -*-from django.conf.urls import url,includefrom . import viewsurlpatterns = [    # 折线图的url    url(r'^linediagram/$', views.showlinediagram),]

4 views.py

# -*- coding: utf-8 -*-from django.shortcuts import renderfrom django.http import HttpResponse from matplotlib.figure import Figurefrom matplotlib.backends.backend_agg import FigureCanvasAggfrom matplotlib.dates import DateFormatterimport matplotlib.pyplot as plt import randomimport datetime # 折线图对应的的模板def showlinediagram(request):    return render(request, 'chart/showlinediagram.html')

5 模板showlinediagram.html

<html><head><meta charset="UTF-8" /><title>Highcharts 教程 | 菜鸟教程(runoob.com)</title><script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><script src="http://code.highcharts.com/highcharts.js"></script></head><body><div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div><script language="JavaScript">$(document).ready(function() {   var title = {       text: '月平均气温'   };   var subtitle = {        text: 'Source: runoob.com'   };   var xAxis = {       categories: ['一月', '二月', '三月', '四月', '五月', '六月'              ,'七月', '八月', '九月', '十月', '十一月', '十二月']   };   var yAxis = {      title: {         text: 'Temperature (/xB0C)'      },      plotLines: [{         value: 0,         width: 1,         color: '#808080'      }]   };    var tooltip = {      valueSuffix: '/xB0C'   }    var legend = {      layout: 'vertical',      align: 'right',      verticalAlign: 'middle',      borderWidth: 0   };    var series =  [      {         name: 'Tokyo',         data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2,            26.5, 23.3, 18.3, 13.9, 9.6]      },      {         name: 'New York',         data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8,            24.1, 20.1, 14.1, 8.6, 2.5]      },      {         name: 'Berlin',         data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6,            17.9, 14.3, 9.0, 3.9, 1.0]      },      {         name: 'London',         data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0,            16.6, 14.2, 10.3, 6.6, 4.8]      }   ];    var json = {};    json.title = title;   json.subtitle = subtitle;   json.xAxis = xAxis;   json.yAxis = yAxis;   json.tooltip = tooltip;   json.legend = legend;   json.series = series;    $('#container').highcharts(json);});</script></body></html>

二 测试结果

1 浏览器输入:http://localhost:8000/chart/linediagram

2 结果显示结果

三 参考

https://blog.csdn.net/Temanm/article/details/54141759

https://my.oschina.net/jastme/blog/357142

https://www.hcharts.cn/demo/highcharts/

http://www.runoob.com/highcharts/highcharts-configuration-syntax.html

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