I am using ios chart to implement Line graph in Swift 3 . As in earlier versions of Swift, we had constructor to bind x values to Line graph, but there doesn't seems any such in Swift 3?
Kindly help if anyone has some inputs.
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4 Answers
Please try this to get your XAxis Values.
import UIKit
import Charts
class LineChartViewController : UIViewController {
@IBOutlet weak var lineChartView: LineChartView!
override func viewDidLoad() {
super.viewDidLoad()
let populationData :[Int : Double] = [
1990 : 123456.0,
2000 : 233456.0,
2010 : 343456.0
]
let ySeries = populationData.map { x, y in
return ChartDataEntry(x: Double(x), y: y)
}
let data = LineChartData()
let dataset = LineChartDataSet(values: ySeries, label: "Hello")
dataset.colors = [NSUIColor.red]
data.addDataSet(dataset)
self.lineChartView.data = data
self.lineChartView.gridBackgroundColor = NSUIColor.white
self.lineChartView.xAxis.drawGridLinesEnabled = false;
self.lineChartView.xAxis.labelPosition = XAxis.LabelPosition.bottom
self.lineChartView.chartDescription?.text = "LineChartView Example"
}
override open func viewWillAppear(_ animated: Bool) {
self.lineChartView.animate(xAxisDuration: 1.0, yAxisDuration: 1.0)
}
}
Thanks Sriram
2 Comments
Harshit Goel
stackoverflow.com/questions/41979926/… please help me too ?
Dilip Jangid
@ShriRam, how to set dataset colour ? because the line ="dataset.colors = [NSUIColor.red]" is not affects
Please care to read the migration notes in Release Notes
- All dataset constructors have changed - they do not take an array of x-indices anymore.
- All entry constructors have changed - they take in an X and a Y.
Basically, the x values are now taken from the entries.
If you want to change which values are displayed on the x-axis, you can change xAxis.axisMinimum and xAxis.axisMaximum and format them using xAxis.valueFormatter.
Comments
Swift 3:
Example with barChart :
import UIKit
import Charts
class StatistiqueSafetyCheckViewController: UIViewController {
@IBOutlet weak var lineChartView: LineChartView!
override func viewDidLoad() {
super.viewDidLoad()
let ys1 = Array(1..<10).map { x in return sin(Double(x) / 2.0 / 3.141 * 1.5) }
let ys2 = Array(1..<10).map { x in return cos(Double(x) / 2.0 / 3.141) }
let yse1 = ys1.enumerated().map { x, y in return LineChartDataEntry(x: Double(x), y: y) }
let yse2 = ys2.enumerated().map { x, y in return LineChartDataEntry(x: Double(x), y: y) }
let data = LineChartData()
let ds1 = LineChartDataSet(values: yse1, label: "Hello")
ds1.colors = [NSUIColor.red]
data.addDataSet(ds1)
let ds2 = LineChartDataSet(values: yse2, label: "World")
ds2.colors = [NSUIColor.blue]
data.addDataSet(ds2)
self.lineChartView.data = data
self.lineChartView.gridBackgroundColor = NSUIColor.white
self.lineChartView.chartDescription?.text = "Linechart Demo"
}
override open func viewWillAppear(_ animated: Bool) {
self.lineChartView.animate(xAxisDuration: 1.0, yAxisDuration: 1.0)
}
}
Comments
To change also circle ticket color:
ds1.circleColors = [NSUIColor.blue]
ds2.circleColors = [NSUIColor.red]
answered Aug 23, 2018 at 9:13
Alessandro Mattiuzzi
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