Ios Xcode动态实时更新折线图
我正在尝试创建一个折线图,其中我将连续绘制数据,以便在实时更新中观察图形,将在大约5点左右每秒绘制。我正在寻找的图形将类似于此处显示的图形 或 我一直在玩一些不同的图表框架,如iOS图表,但我似乎无法获得我正在寻找的确切图形,在那里实时更新可以用不断变化的X轴绘制图表 使用iOS图表,我成功地创建了一种进化图,下面是示例代码Ios Xcode动态实时更新折线图,ios,swift,xcode,ios-charts,Ios,Swift,Xcode,Ios Charts,我正在尝试创建一个折线图,其中我将连续绘制数据,以便在实时更新中观察图形,将在大约5点左右每秒绘制。我正在寻找的图形将类似于此处显示的图形 或 我一直在玩一些不同的图表框架,如iOS图表,但我似乎无法获得我正在寻找的确切图形,在那里实时更新可以用不断变化的X轴绘制图表 使用iOS图表,我成功地创建了一种进化图,下面是示例代码 @IBOutlet weak var chartView: LineChartView! var xAxisArray : [String]? var yAxisArr
@IBOutlet weak var chartView: LineChartView!
var xAxisArray : [String]?
var yAxisArray : [Double]?
var date : NSDate?
var dateFormatter : NSDateFormatter?
override func viewDidLoad() {
super.viewDidLoad()
self.title = "Live Graph"
let stringArray = NSMutableArray()
let numberArray = NSMutableArray()
dateFormatter = NSDateFormatter()
dateFormatter!.dateFormat = "HH:mm:ss"
date = NSDate()
//Insert random values into chart
for(var i = 0; i < 40; i++)
{
date = date!.dateByAddingTimeInterval(0.3)
let stringDate = dateFormatter?.stringFromDate(date!)
stringArray.addObject(stringDate!)
let randomNum = self.randomBetweenNumbers(0.0005, secondNum: 0.0015)
numberArray.addObject(randomNum)
}
xAxisArray = stringArray as NSArray as? [String]
yAxisArray = numberArray as NSArray as? [Double]
configureChart()
setData()
NSTimer.scheduledTimerWithTimeInterval(0.2, target: self, selector: "updateChart", userInfo: nil, repeats: true)
}
func configureChart()
{
//Chart config
chartView.descriptionText = ""
chartView.noDataTextDescription = "Add Data"
chartView.drawGridBackgroundEnabled = false
chartView.dragEnabled = true
chartView.rightAxis.enabled = false
chartView.doubleTapToZoomEnabled = false
chartView.legend.enabled = false
//Configure xAxis
let chartXAxis = chartView.xAxis as ChartXAxis
chartXAxis.labelPosition = .Bottom
chartXAxis.setLabelsToSkip(5)
//configure yAxis
chartView.zoom(1.0, scaleY: 1.0, x: 0.0, y: 0.0)
}
func randomBetweenNumbers(firstNum: CGFloat, secondNum: CGFloat) -> CGFloat{
return CGFloat(arc4random()) / CGFloat(UINT32_MAX) * abs(firstNum - secondNum) + min(firstNum, secondNum)
}
func updateChart()
{
let mutableArray = NSMutableArray()
for(var i = 1; i < xAxisArray?.count; i++)
{
mutableArray.addObject(xAxisArray![i])
}
date = date!.dateByAddingTimeInterval(1.0)
let str = dateFormatter!.stringFromDate(date!)
mutableArray.addObject(str)
xAxisArray = mutableArray as NSArray as? [String]
//Numbers
let numberArray = NSMutableArray()
for(var i = 1; i < yAxisArray?.count; i++)
{
numberArray.addObject(yAxisArray![i])
}
let randomNum = self.randomBetweenNumbers(0.0005, secondNum: 0.0015)
let convertToDouble = Double(randomNum)
numberArray.addObject(convertToDouble)
yAxisArray = numberArray as NSArray as? [Double]
setData()
}
func setData()
{
// 1 - creating an array of data entries
var yVals1 : [ChartDataEntry] = [ChartDataEntry]()
for var i = 0; i < xAxisArray!.count; i++ {
yVals1.append(ChartDataEntry(value: yAxisArray![i], xIndex: i))
}
// 2 - create a data set with our array
let set1: LineChartDataSet = LineChartDataSet(yVals: yVals1, label: "")
set1.axisDependency = .Left // Line will correlate with left axis values
set1.setColor(UIColor.blueColor().colorWithAlphaComponent(0.5)) // our line's opacity is 50%
set1.setCircleColor(UIColor.blueColor()) // 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.blueColor()
set1.highlightColor = UIColor.whiteColor()
set1.drawCircleHoleEnabled = true
set1.drawFilledEnabled = 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(xVals: xAxisArray, dataSets: dataSets)
//5 - finally set our data
self.chartView.data = data
//Clear text color
chartView.data?.setValueTextColor(UIColor.clearColor())
}
@ibvar图表视图:线条图表视图!
var xAxisArray:[字符串]?
变量:数组:[Double]?
var日期:NSDate?
var dateFormatter:NSDateFormatter?
重写func viewDidLoad(){
super.viewDidLoad()
self.title=“实时图形”
设stringArray=NSMutableArray()
设numberArray=NSMutableArray()
dateFormatter=NSDateFormatter()
dateFormatter!.dateFormat=“HH:mm:ss”
date=NSDate()
//在图表中插入随机值
对于(变量i=0;i<40;i++)
{
日期=日期!.dateByAddingTimeInterval(0.3)
设stringDate=dateFormatter?.stringFromDate(日期!)
stringArray.addObject(stringDate!)
让randomNum=self.randomBetweenNumber(0.0005,secondNum:0.0015)
numberraray.addObject(随机数)
}
xAxisArray=stringArray作为NSArray作为?[String]
yAxisArray=numberArray作为NSArray作为?[双精度]
配置图表()
setData()
scheduledTimerWithTimeInterval(0.2,目标:self,选择器:“updateChart”,userInfo:nil,repeats:true)
}
函数配置图表()
{
//图表配置
chartView.descriptionText=“”
chartView.noDataTextDescription=“添加数据”
chartView.drawGridBackgroundEnabled=false
chartView.dragEnabled=true
chartView.rightAxis.enabled=false
chartView.doubleTapToZoomEnabled=false
chartView.legend.enabled=false
//配置xAxis
让chartXAxis=chartView.xAxis作为chartXAxis
chartXAxis.labelPosition=.Bottom
chartXAxis.setLabelsToSkip(5)
//配置yAxis
缩放(1.0,缩放比例:1.0,x:0.0,y:0.0)
}
func random介于数字之间(firstNum:CGFloat,secondNum:CGFloat)->CGFloat{
返回CGFloat(arc4random())/CGFloat(UINT32_MAX)*abs(firstNum-secondNum)+min(firstNum,secondNum)
}
func updateChart()
{
设mutableArray=NSMutableArray()
对于(变量i=1;i
但是如果你尝试一下,你会发现它相当不稳定,加上每一个x轴标签都会更新,我希望x轴能继续发展,并在绘图继续时在屏幕上设置动画,如示例中所示
有谁知道有什么绘图软件可以让我复制这种类型的图表,或者是否可以使用iOS图表实现这种效果
编辑:
我正在尝试实现这种类型的绘图示例
希望更顺利,如果您没有找到合适的第三方,我建议您使用以下方法:
ui视图
,其中包含要绘制的代码(图形/图表顶点),然后添加到单元格的根视图中override func viewDidLoad() {
super.viewDidLoad()
//charts
self.lineChartView.delegate = self
let set_a: LineChartDataSet = LineChartDataSet(yVals: [ChartDataEntry](), label: "a")
set_a.drawCirclesEnabled = false
set_a.setColor(UIColor.blueColor())
let set_b: LineChartDataSet = LineChartDataSet(yVals: [ChartDataEntry](), label: "b")
set_b.drawCirclesEnabled = false
set_b.setColor(UIColor.greenColor())
self.lineChartView.data = LineChartData(xVals: [String](), dataSets: [set_a, set_b])
timer = NSTimer.scheduledTimerWithTimeInterval(0.010, target:self, selector: #selector(ViewController.updateCounter), userInfo: nil, repeats: true)
}
// add point
var i = 0
func updateCounter() {
self.lineChartView.data?.addEntry(ChartDataEntry(value: reading_a[i], xIndex: i), dataSetIndex: 0)
self.lineChartView.data?.addEntry(ChartDataEntry(value: reading_b[i], xIndex: i), dataSetIndex: 1)
self.lineChartView.data?.addXValue(String(i))
self.lineChartView.setVisibleXRange(minXRange: CGFloat(1), maxXRange: CGFloat(50))
self.lineChartView.notifyDataSetChanged()
self.lineChartView.moveViewToX(CGFloat(i))
i = i + 1
}