Swift 如何向折线图的Y轴添加名称/标题/值(月)?
我正在尝试简单的折线图。图表很好,我想为x轴和y轴的每个点添加值/名称 请参见下图,这是混合,但我想添加/显示x轴和y轴上的值 例如:在我的示例代码中,我提到了月份和单位销售额 在X轴中,我想显示月份名称和Y轴,我想显示一些单位售价 如何在x轴和y轴上执行或显示值Swift 如何向折线图的Y轴添加名称/标题/值(月)?,swift,charts,linechart,Swift,Charts,Linechart,我正在尝试简单的折线图。图表很好,我想为x轴和y轴的每个点添加值/名称 请参见下图,这是混合,但我想添加/显示x轴和y轴上的值 例如:在我的示例代码中,我提到了月份和单位销售额 在X轴中,我想显示月份名称和Y轴,我想显示一些单位售价 如何在x轴和y轴上执行或显示值 import UIKit import Charts class ViewController: UIViewController { var dataEntries: [ChartDataEntry] = []
import UIKit
import Charts
class ViewController: UIViewController {
var dataEntries: [ChartDataEntry] = []
// var chartDataBeanArray = [ChartDataBean]()
let months = ["Jan" , "Feb", "Mar", "Apr", "May", "June", "July", "August", "Sept", "Oct", "Nov", "Dec"]
let unitsSold = [24.0,43.0,56.0,23.0,56.0,68.0,48.0,120.0,41.0,34.0,55.9,12.0,34.0]
@IBOutlet weak var chartViewOutlet: LineChartView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
setChart(months, values: unitsSold)
}
func setChart(_ dataPoints: [String], values: [Double]) {
print(values)
print(dataPoints)
chartViewOutlet.noDataText = "No data available!"
for i in 0..<values.count {
print("chart point : \(values[i])")
let dataEntry = ChartDataEntry(x: Double(i), y: values[i])
dataEntries.append(dataEntry)
}
let line1 = LineChartDataSet(entries: dataEntries, label: "Units Consumed")
line1.colors = [NSUIColor.blue]
line1.mode = .cubicBezier
line1.cubicIntensity = 0.2
let gradient = getGradientFilling()
line1.fill = Fill.fillWithLinearGradient(gradient, angle: 90.0)
line1.drawFilledEnabled = true
let data = LineChartData()
data.addDataSet(line1)
chartViewOutlet.data = data
chartViewOutlet.setScaleEnabled(false)
chartViewOutlet.animate(xAxisDuration: 1.5)
chartViewOutlet.drawGridBackgroundEnabled = false
chartViewOutlet.xAxis.drawAxisLineEnabled = false
chartViewOutlet.xAxis.drawGridLinesEnabled = false
chartViewOutlet.leftAxis.drawAxisLineEnabled = false
chartViewOutlet.leftAxis.drawGridLinesEnabled = false
chartViewOutlet.rightAxis.drawAxisLineEnabled = false
chartViewOutlet.rightAxis.drawGridLinesEnabled = false
chartViewOutlet.legend.enabled = false
chartViewOutlet.xAxis.enabled = false
chartViewOutlet.leftAxis.enabled = false
chartViewOutlet.rightAxis.enabled = false
chartViewOutlet.xAxis.drawLabelsEnabled = false
}
/// Creating gradient for filling space under the line chart
private func getGradientFilling() -> CGGradient {
// Setting fill gradient color
let coloTop = UIColor(red: 141/255, green: 133/255, blue: 220/255, alpha: 1).cgColor
let colorBottom = UIColor(red: 230/255, green: 155/255, blue: 210/255, alpha: 1).cgColor
// Colors of the gradient
let gradientColors = [coloTop, colorBottom] as CFArray
// Positioning of the gradient
let colorLocations: [CGFloat] = [0.7, 0.0]
// Gradient Object
return CGGradient.init(colorsSpace: CGColorSpaceCreateDeviceRGB(), colors: gradientColors, locations: colorLocations)!
}
}
这是现在显示的图表
现在我想在底部(x轴)显示月份值…如何显示?
如果您想查看源代码,可以在此处找到它:在项目中添加以下代码
func setChart(dataPoints: [String], values: [Double]) {
for i in 0 ..< dataPoints.count {
dataEntries.append(ChartDataEntry(x: Double(i), y: values[i]))
}
let lineChartDataSet = LineChartDataSet(entries: dataEntries, label: "Units Consumed")
lineChartDataSet.axisDependency = .left
lineChartDataSet.setColor(UIColor.black)
lineChartDataSet.setCircleColor(UIColor.black) // our circle will be dark red
lineChartDataSet.lineWidth = 1.0
lineChartDataSet.circleRadius = 3.0 // the radius of the node circle
lineChartDataSet.fillAlpha = 1
lineChartDataSet.fillColor = UIColor.black
lineChartDataSet.highlightColor = UIColor.white
lineChartDataSet.drawCircleHoleEnabled = true
var dataSets = [LineChartDataSet]()
dataSets.append(lineChartDataSet)
let lineChartData = LineChartData(dataSets: dataSets)
chartViewOutlet.data = lineChartData
chartViewOutlet.rightAxis.enabled = false
chartViewOutlet.xAxis.drawGridLinesEnabled = false
chartViewOutlet.xAxis.labelPosition = .bottom
chartViewOutlet.xAxis.valueFormatter = IndexAxisValueFormatter(values: dataPoints)
chartViewOutlet.legend.enabled = true
}
func设置图(数据点:[字符串],值:[双精度]){
对于0中的i..
输出:
这100%有效。试试看。尝试设置
chartViewOutlet.xAxis.enabled=true
和chartViewOutlet.leftAxis.enabled=true
和chartViewOutlet.rightAxis.enabled=true
值位于最后和右侧。非常感谢。但我需要显示/启用x轴,并希望在其上显示月份数据/值。目前y轴显示为UNITSOLD数据。谢谢。它起作用了。我做了一些小改动,并按照我的要求实施
func setChart(dataPoints: [String], values: [Double]) {
for i in 0 ..< dataPoints.count {
dataEntries.append(ChartDataEntry(x: Double(i), y: values[i]))
}
let lineChartDataSet = LineChartDataSet(entries: dataEntries, label: "Units Consumed")
lineChartDataSet.axisDependency = .left
lineChartDataSet.setColor(UIColor.black)
lineChartDataSet.setCircleColor(UIColor.black) // our circle will be dark red
lineChartDataSet.lineWidth = 1.0
lineChartDataSet.circleRadius = 3.0 // the radius of the node circle
lineChartDataSet.fillAlpha = 1
lineChartDataSet.fillColor = UIColor.black
lineChartDataSet.highlightColor = UIColor.white
lineChartDataSet.drawCircleHoleEnabled = true
var dataSets = [LineChartDataSet]()
dataSets.append(lineChartDataSet)
let lineChartData = LineChartData(dataSets: dataSets)
chartViewOutlet.data = lineChartData
chartViewOutlet.rightAxis.enabled = false
chartViewOutlet.xAxis.drawGridLinesEnabled = false
chartViewOutlet.xAxis.labelPosition = .bottom
chartViewOutlet.xAxis.valueFormatter = IndexAxisValueFormatter(values: dataPoints)
chartViewOutlet.legend.enabled = true
}