如何在网页中显示数据图表
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一、下载所需要的echarts.min.js文件官网下载链接
csdn下载链接
二、引入 ECharts
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<!-- 引入 ECharts 文件 -->
<script src="echarts.min.js"></script>
</head>
</html>12345678
三、绘制一个简单的柱状图表
在绘图前我们需要为 ECharts 准备一个具备高宽的 DOM 容器。
然后就可以通过 echarts.init 方法初始化一个 echarts 实例并通过 setOption 方法生成一个简单的柱状图，下面是完整代码。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts</title>
<!-- 引入 echarts.js -->
<script src="echarts.min.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 600px;height:400px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
var option =
title:
text: 'ECharts 入门示例'
,
tooltip: ,
legend:
data:['销量']
,
xAxis:
data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
,
yAxis: ,
series: [
name: '销量',
type: 'bar',
data: [5, 20, 36, 10, 10, 20]
]
;
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>
</html>12345678910111213141516171819202122232425262728293031323334353637383940 参考技术A 如何在网页
如何使用图表库分隔 JSON 数据以唯一显示？
【中文标题】如何使用图表库分隔 JSON 数据以唯一显示？【英文标题】：How to Seperate JSON data to display uniquely using Charts Library? 【发布时间】：2017-07-06 09:03:29 【问题描述】：我能够显示 JSON 数据以使用图表库显示折线图。我已显示所有标记和主题，但我试图在 TermWise 中显示。如何使用 TermID 分隔 JSON 数据?
import UIKit
import Charts
import Alamofire
import SwiftyJSON
class ViewController: UIViewController , ChartViewDelegate
@IBOutlet weak var text: UILabel!
@IBOutlet weak var lineChartView: LineChartView!
@IBOutlet weak var menu: UIBarButtonItem!
var login_details : Login?
var markdetail : [Marks] = []
var markd : Marks?
var myResponse : JSON = nil
// var Subjects: [String] = []
var subjectss : [String] = []
var marks01 : [Double] = []
var setname = String()
let Subjects = ["eng" , "sci", "math", "soc"]
let marks1 = [45,55,70,80]
override func viewDidLoad()
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
menu.target = self.revealViewController()
menu.action = #selector(SWRevealViewController.revealToggle(_:))
if self.revealViewController() != nil
self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
self.view.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())
// text.text = markd?.NAME
// forlineView()
getmarks()
override func didReceiveMemoryWarning()
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
func getmarks()
let student_id = login_details?.masterid
let std_id_String = student_id?.replacingOccurrences(of: "[^0-9 ]", with: "", options: NSString.CompareOptions.regularExpression, range:nil)
print("numberic",std_id_String!)
let url = NSURL(string: "http://**********/api/academics//getSingleStudentsMarks"+"?StdID=" + std_id_String!)
var request = URLRequest(url: url! as URL)
request.httpMethod = "GET"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
Alamofire.request(request).responseJSON() response in
switch response.result
case.success(let data):
print("success",data)
let myresponse = JSON(data)
for marks in myresponse.array!
let marksObj = Marks(MarksJson: marks)
self.markdetail.append(marksObj)
self.subjectss.append(marksObj.CourseName)
self.marks01.append(marksObj.marks)
// for name in markdetail
//
//
self.setname.append(marksObj.examDescription)
print("Markss",marksObj.marks)
self.forlineView()
self.textdisplay()
case.failure(let error):
print("Not Success",error)
func forlineView()
// 1
self.lineChartView.delegate = self
// 2
self.lineChartView.chartDescription?.text = "Tap node for details"
// 3
self.lineChartView.chartDescription?.textColor = UIColor.red
self.lineChartView.gridBackgroundColor = UIColor.darkGray
// self.lineChartView.backgroundColor = UIColor.darkGray
// 4
self.lineChartView.noDataText = "No data provided"
// 5
setChartData(subject: subjectss)
func setChartData(subject : [String])
// 1 - creating an array of data entries
var yVals1 : [ChartDataEntry] = [ChartDataEntry]()
for i in 0..<subject.count
yVals1.append(ChartDataEntry(x: Double(i), y: Double(marks01[i])))
// 2 - create a data set with our array
let set1: LineChartDataSet = LineChartDataSet(values: yVals1, label: setname)
set1.axisDependency = .left // Line will correlate with left axis values
set1.setColor(UIColor.red.withAlphaComponent(0.5)) // our line's opacity is 50%
set1.setCircleColor(UIColor.red) // our circle will be dark red
set1.lineWidth = 2.0
set1.circleRadius = 6.0 // the radius of the node circle
set1.fillAlpha = 65 / 255.0
set1.fillColor = UIColor.red
set1.highlightColor = UIColor.red
set1.drawCircleHoleEnabled = true
//3 - create an array to store our LineChartDataSets
var dataSets : [LineChartDataSet] = [LineChartDataSet]()
dataSets.append(set1)
//4 - pass our months in for our x-axis label value along with our dataSets
let data: LineChartData = LineChartData(dataSets: dataSets)
data.setValueTextColor(UIColor.red)
//5 - finally set our data
self.lineChartView.data = data
//6 - add x-axis label
let xaxis = self.lineChartView.xAxis
xaxis.valueFormatter = MyXAxisFormatter(subject)
func textdisplay()
for d in self.markdetail
self.text.text = d.NAME
class MyXAxisFormatter: NSObject, IAxisValueFormatter
let subjectss: [String]
init(_ subjects: [String])
self.subjectss = subjects
func stringForValue(_ value: Double, axis: AxisBase?) -> String
return subjectss[Int(value) % subjectss.count]
目前我正在接受
JSON
(
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 4027;
CourseName = Arts;
Marks = 45;
NAME = "Calvin Patterson";
Sno = 2107;
StdID = 95;
TermID = 6022;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = "First Term";
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 5034;
CourseName = Math;
Marks = 90;
NAME = "Calvin Patterson";
Sno = 2108;
StdID = 95;
TermID = 6022;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = "First Term";
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 5035;
CourseName = English;
Marks = 52;
NAME = "Calvin Patterson";
Sno = 2109;
StdID = 95;
TermID = 6022;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = "First Term";
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 6034;
CourseName = hi;
Marks = 70;
NAME = "Calvin Patterson";
Sno = 2110;
StdID = 95;
TermID = 6022;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = "First Term";
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 4027;
CourseName = Arts;
Marks = 50;
NAME = "Calvin Patterson";
Sno = 4119;
StdID = 95;
TermID = 7024;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = Second;
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 5034;
CourseName = Math;
Marks = 60;
NAME = "Calvin Patterson";
Sno = 4120;
StdID = 95;
TermID = 7024;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = Second;
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 5035;
CourseName = English;
Marks = 70;
NAME = "Calvin Patterson";
Sno = 4121;
StdID = 95;
TermID = 7024;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = Second;
type = Terminal;
,
CLASSNO = 1;
"CLASS_ID" = 2021;
CourseID = 6034;
CourseName = hi;
Marks = 80;
NAME = "Calvin Patterson";
Sno = 4122;
StdID = 95;
TermID = 7024;
"Terminal_FM" = 100;
"Terminal_PM" = 40;
"UT_FM" = 50;
"UT_PM" = 20;
examDescription = Second;
type = Terminal;
)
必填
我已经在图表中显示了所有 JSON 数据。我想显示标记和 TermWise 中的主题。如何完成？我想显示标记和 第一学期和第二学期的科目，这些学期的科目相同，但 标记不同，想绘制在同一张图表中
模型类
class Marks
var classno = String()
var class_id = String()
var course_id = String()
var marks = Double()
var Sno = String()
var stdid = String()
var TermID = String()
var CourseName = String()
var Terminal_FM = String()
var Terminal_PM = String()
var UT_FM = String()
var UT_PM = String()
var examDescription = String()
var type = String()
var transferRate = String()
var NAME = String()
init(MarksJson:JSON)
self.classno = MarksJson["CLASSNO"].stringValue
self.class_id = MarksJson["CLASS_ID"].stringValue
self.course_id = MarksJson["CourseID"].stringValue
self.marks = MarksJson["Marks"].double!
self.Sno = MarksJson["Sno"].stringValue
self.stdid = MarksJson["StdID"].stringValue
self.TermID = MarksJson["TermID"].stringValue
self.CourseName = MarksJson["CourseName"].stringValue
self.Terminal_FM = MarksJson["Terminal_FM"].stringValue
self.Terminal_PM = MarksJson["Terminal_PM"].stringValue
self.UT_FM = MarksJson["UT_FM"].stringValue
self.UT_PM = MarksJson["UT_PM"].stringValue
self.examDescription = MarksJson["examDescription"].stringValue
self.type = MarksJson["type"].stringValue
self.transferRate = MarksJson["transferRate"].stringValue
self.NAME = MarksJson["NAME"].stringValue
【问题讨论】：
“TermWise 中的主题”你能解释一下吗？您的意思是重新组合同一主题的笔记（所有数学，所有英语等）？如果是这种情况，您只需将相应的相加或取平均值即可。 我已经更新了图片并尝试在termid wise中显示标记和主题以在图表中显示不同的线条？ 【参考方案1】：Change your code like this,
for marks in myresponse.array!
let marksObj = Marks(MarksJson: marks)
if marksObj.examDescription == "First Term"
self.markdetail.append(marksObj)
self.subjectss.append(marksObj.CourseName)
self.marks01.append(marksObj.marks)
self.setname = marksObj.examDescription
print("Markss",marksObj.marks)
self.forlineView(examDescription: marksObj.examDescription)
self.textdisplay(marks: marksObj)
else if marksObj.examDescription == "Second Term"
self.markdetailForSecondTerm.append(marksObj)
self.subjectssForSecondTerm.append(marksObj.CourseName)
self.marks01ForSecondTerm.append(marksObj.marks)
self.setname = marksObj.examDescription
print("Markss",marksObj.marks)
self.forlineView(examDescription: marksObj.examDescription)
self.textdisplay(marks: marksObj)
func forlineView(examDescription: String)
if examDescription == "First Term"
// 1
self.lineChartView.delegate = self
// 2
self.lineChartView.chartDescription?.text = "Tap node for details"
// 3
self.lineChartView.chartDescription?.textColor = UIColor.red
self.lineChartView.gridBackgroundColor = UIColor.darkGray
// self.lineChartView.backgroundColor = UIColor.darkGray
// 4
self.lineChartView.noDataText = "No data provided"
// 5
setChartData(subject: subjectss,marks: marks01,exam: examDescription)
else if examDescription == "Second Term"
// 1
self.lineChartView.delegate = self
// 2
self.lineChartView.chartDescription?.text = "Tap node for details"
// 3
self.lineChartView.chartDescription?.textColor = UIColor.green
self.lineChartView.gridBackgroundColor = UIColor.darkGray
// self.lineChartView.backgroundColor = UIColor.darkGray
// 4
self.lineChartView.noDataText = "No data provided"
// 5
setChartData(subject: subjectssForSecondTerm,marks: marks01ForSecondTerm,exam: examDescription)
func setChartData(subject : [String], marks : [Double], exam: String)
// 1 - creating an array of data entries
var yVals1 : [ChartDataEntry] = [ChartDataEntry]()
if (exam == "First Term")
for i in 0..<subject.count
yVals1.append(ChartDataEntry(x: Double(i), y: Double(marks[i])))
// 2 - create a data set with our array
let set1: LineChartDataSet = LineChartDataSet(values: yVals1, label: "First Term")
set1.axisDependency = .left // Line will correlate with left axis values
set1.setColor(UIColor.red.withAlphaComponent(0.5)) // our line's opacity is 50%
set1.setCircleColor(UIColor.red) // our circle will be dark red
set1.lineWidth = 2.0
set1.circleRadius = 6.0 // the radius of the node circle
set1.fillAlpha = 65 / 255.0
set1.fillColor = UIColor.red
set1.highlightColor = UIColor.red
set1.drawCircleHoleEnabled = true
//3 - create an array to store our LineChartDataSets
dataSets.append(set1)
//4 - pass our months in for our x-axis label value along with our dataSets
else if (exam == "Second Term")
var yVals2 : [ChartDataEntry] = [ChartDataEntry]()
for i in 0..<subject.count
yVals2.append(ChartDataEntry(x: Double(i), y: Double(marks[i])))
// 2 - create a data set with our array
let set2: LineChartDataSet = LineChartDataSet(values: yVals2, label: "Second Term")
set2.axisDependency = .left // Line will correlate with left axis values
set2.setColor(UIColor.red.withAlphaComponent(0.5)) // our line's opacity is 50%
set2.setCircleColor(UIColor.red) // our circle will be dark red
set2.lineWidth = 2.0
set2.circleRadius = 6.0 // the radius of the node circle
set2.fillAlpha = 65 / 255.0
set2.fillColor = UIColor.red
set2.highlightColor = UIColor.red
set2.drawCircleHoleEnabled = true
//3 - create an array to store our LineChartDataSets
dataSets.append(set2)
let data: LineChartData = LineChartData(dataSets: dataSets)
data.setValueTextColor(UIColor.red)
//5 - finally set our data
self.lineChartView.data = data
//6 - add x-axis label
let xaxis = self.lineChartView.xAxis
xaxis.valueFormatter = MyXAxisFormatter(subject)
func textdisplay(markDetails: [Marks])
for d in self.markDetails
self.text.text = d.NAME
【讨论】：
我得到的结果与我之前的屏幕截图相同 或者我们是否需要更改 setChartData 中的任何内容 是的，我正在尝试这样两个术语标记应该显示在不同的行中 我已经创建了模型类并在上面更新了它，是好还是我需要创建另一个模型类以及如何为每个术语分离 NSMutableArrays 我已经创建了它，所以我在数组字符串中附加 Marks 数据以上是关于如何在网页中显示数据图表的主要内容，如果未能解决你的问题，请参考以下文章