Problem with labels using library Charts with UIKit in XCode 12 - swift

Hell my friends.I'm developing an app which has to show several charts using UIKit and the library Charts. I've been requested to use both things.
I have two arrays with correct data Ciudades y Precios.
Ciudades is String type and Precios Double type. I'v been reading how to use Charts library for hours but it seems that I dont understand how to use it because the chart I get it's not the one I excpected to. I need a chart with the cities on x label but they are not showed as you can see in the picture.
This is my code
class BarChartViewController: UIViewController, ChartViewDelegate {
#IBOutlet weak var barChartView: BarChartView!
var nombres: [String]!
var precios: [Double]!
override func viewDidLoad() {
super.viewDidLoad()
barChartView.delegate = self
nombres = eventos.devolverNombre()
print(nombres)
precios = eventos.devolverPrecios()
setChart(dataPoints: nombres, values: precios)
}
func setChart(dataPoints: [String], values: [Double]) {
barChartView.noDataText = "Es necesario aƱadir datos."
var dataEntries: [BarChartDataEntry] = []
for i in 0..<dataPoints.count {
let dataEntry = BarChartDataEntry(x: Double(i), y: values[i])
if dataEntry != nil {
dataEntries.append(dataEntry)}
}
let chartDataSet = BarChartDataSet(entries: dataEntries, label: "PRECIOS POR EVENTO")
let chartData = BarChartData(dataSet: chartDataSet)
chartDataSet.colors = [UIColor(red: 230/255, green: 126/255, blue: 34/255, alpha: 1)]
chartDataSet.colors = ChartColorTemplates.colorful()
barChartView.data = chartData
barChartView.xAxis.valueFormatter = DefaultAxisValueFormatter(block: {(index, _) in
return self.nombres[Int(index)] })
let labelCount = nombres.count
print(labelCount)
barChartView.xAxis.setLabelCount(labelCount, force: true)
barChartView.xAxis.labelRotationAngle = 90
barChartView.xAxis.centerAxisLabelsEnabled = true
barChartView.xAxis.labelPosition = .bottom
barChartView.xAxis.labelFont = UIFont.systemFont(ofSize: 10)
barChartView.animate(xAxisDuration: 1.0, yAxisDuration: 1.0, easingOption: .easeInBounce)
}
}

Related

Truncate value label of PieChart in Charts Library Swift

`class PieChartViewController: DemoBaseViewController {
#IBOutlet var chartView: PieChartView!
#IBOutlet var sliderX: UISlider!
#IBOutlet var sliderY: UISlider!
#IBOutlet var sliderTextX: UITextField!
#IBOutlet var sliderTextY: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
self.title = "Pie Chart"
self.setup(pieChartView: chartView)
chartView.delegate = self
chartView.holeRadiusPercent = 0.8
chartView.usePercentValuesEnabled = true
chartView.transparentCircleRadiusPercent = 0
chartView.drawHoleEnabled = true
chartView.transparentCircleColor = UIColor.white.withAlphaComponent(1)
chartView.drawCenterTextEnabled = true
chartView.centerText = nil
let l = chartView.legend
l.enabled = false
//MARK: Entry label Styling (Value Label Above PieChart)
chartView.entryLabelColor = .black
chartView.entryLabelFont = .systemFont(ofSize: 14, weight: .medium)
//MARK: Setting Offset
let frameOffset = chartView.frame.width * 0.12
chartView.setExtraOffsets(left: frameOffset, top: frameOffset, right: frameOffset, bottom: frameOffset)
self.slidersValueChanged(nil)
}
override func updateChartData() {
if self.shouldHideData {
chartView.data = nil
return
}
self.setDataCount()
}
func setDataCount() {
let entry1 = PieChartDataEntry(value: 22, label: "Apple.It is a fruit")
let entry2 = PieChartDataEntry(value: 33, label: "Zebra.It is an animal")
let entry3 = PieChartDataEntry(value: 31, label: "Eagle.It is a bird")
let entry4 = PieChartDataEntry(value: 14, label: "Asia.It is a continent")
var enteries: [PieChartDataEntry] = []
enteries.append(entry1)
enteries.append(entry2)
enteries.append(entry3)
enteries.append(entry4)
let set = PieChartDataSet(entries: enteries, label: "Knowledge")
set.drawIconsEnabled = false
set.sliceSpace = 0
set.selectionShift = 0
set.colors = ChartColorTemplates.vordiplom()
+ ChartColorTemplates.joyful()
+ ChartColorTemplates.colorful()
+ ChartColorTemplates.liberty()
+ ChartColorTemplates.pastel()
+ [UIColor(red: 51/255, green: 181/255, blue: 229/255, alpha: 1)]
// MARK: Setting Value Label
set.valueLinePart1OffsetPercentage = 0.20
set.valueLinePart1Length = 0.4
set.valueLinePart2Length = 0.4
set.valueLineColor = .black
set.valueTextColor = .black
set.xValuePosition = .outsideSlice
set.yValuePosition = .outsideSlice
let data = PieChartData(dataSet: set)
data.setValueFont(.systemFont(ofSize: 13, weight: .medium))
data.setValueTextColor(.black)
chartView.data = data
chartView.highlightValues(nil)
}
override func optionTapped(_ option: Option) {
chartView.setNeedsDisplay()
}
// MARK: - Actions
#IBAction func slidersValueChanged(_ sender: Any?) {
self.updateChartData()
}
}`
How to truncate or word wrap the value label in Pie Chart ?
I am using Charts Library in iOS.
If I add extra offset the pie chart shrink in smaller devices like iPhone 5s or iPhone SE.
If the text is large then the text goes out of the screen as you can see in the uploaded image. I am not able to find any properties (word wrap) to handle the large text issue.

PieChart using Charts on swift. Need to remove the values of the elements

In the black circles data that i wont to hide. I wonna to get simple green and red chat w\o text in elements.
I checked all the methods of PieChartView and wont find method to hide this data. Sims it integrated to elements...
Inplementation code:
import Charts
class ViewController: UIViewController {
#IBOutlet weak var pieChart: PieChartView!
override func viewDidLoad() {
super.viewDidLoad()
// pieChart.chartAnimator
// pieChart.drawCenterTextEnabled = false
// pieChart.drawHoleEnabled = false
let months = ["", ""]
let unitsSold = [60.0, 40.0]
setChart(dataPoints: months, values: unitsSold)
}
func setChart(dataPoints: [String], values: [Double]) {
var dataEntries: [ChartDataEntry] = []
// let da = ChartDataEntry(
let dataEntry1 = ChartDataEntry(x: Double(0.0), y: 60.0)
let dataEntry2 = ChartDataEntry(x: Double(0.0), y: 40.0)
dataEntries.append(dataEntry1)
dataEntries.append(dataEntry2)
print(dataEntries[0].data as Any)
let pieChartDataSet = PieChartDataSet(entries: dataEntries, label: nil)
let pieChartData = PieChartData(dataSet: pieChartDataSet)
pieChart.data = pieChartData
let colors: [UIColor] = [UIColor(cgColor: UIColor.red.cgColor), UIColor(cgColor: UIColor.green.cgColor)]
pieChartDataSet.colors = colors
}
You need to set the text color as clear, it will work fine. Check out following change in your current code
let pieChartData = PieChartData(dataSet: pieChartDataSet)
pieChartData.setValueTextColor(NSUIColor.clear)
pieChart.data = pieChartData

How can I add names/title/values (months) to Y axis for my line chart?

I am trying to simple line chart. Chart is coming fine and I want to add values/names for every point of x and y axis.
See the following image, this is is comming , but I want to add/show values in x and y axis.
For example: Check in my example code, I mentioned months and unitSold values.
in X axis I wants to show months names and Y axis and I wants to show some unit sold values.
How can I do or show values in x and y axis?
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)!
}
}
EDIT : After adding following code suggested by #marc
chartViewOutlet.xAxis.enabled = true
chartViewOutlet.leftAxis.enabled = true
this is now showing chart.
Now I wants to show months values in bottom (x axis)...how to show it?
You can find source code here if you want to check it: https://drive.google.com/file/d/1vkPqktZ3mX3q9f75-bihVYeublwc2dXE/view?usp=sharing
Add following code in your project.
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
}
Output:
This works 100%. Try it.

How do I draw Bar-Chart using danielgindi/Charts library with Swift 3.0

Problem Statement : Unable to run due to some errors in implementation of Bar-Chart using 'danielgindi/Charts library' in swift 3.0 syntax errors.
Actual Error in Swift 3.0:
After correcting above error, it gives another error in next line, as shown below.
Coding Stuff:
import Charts
class ChartViewController: UIViewController {
#IBOutlet var barChartView: BarChartView!
var months: [String]!
var dataEntries: [BarChartDataEntry] = []
override func viewDidLoad() {
super.viewDidLoad()
months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0, 4.0, 18.0, 2.0, 4.0, 5.0, 4.0]
setChart(dataPoints: months, values: unitsSold)
}
func setChart(dataPoints: [String], values: [Double]) {
barChartView.noDataText = "You need to provide data for the chart."
for i in 0..<dataPoints.count {
let dataEntry = BarChartDataEntry(x: Double(i), yValues: [values[i]])
dataEntries.append(dataEntry)
}
let chartDataSet = BarChartDataSet(values: dataEntries, label: "Units Sold")
let chartData = BarChartData(xVals: months, dataSet: chartDataSet)
barChartView.data = chartData
}
Please help me, how do I resolve such errors in swift 3.0
I've had this issue as well. It was this line here:
let dataEntry = BarChartDataEntry(x: Double(i), yValues: [values[i]])
You cannot convert dataPoints: [String] to type Double.
My solution was to remove the Double. Then that did not satisfy my data types, so I made them all of type [Int] like so:
func setChart(dataPoints: [Int], values: [Int]) {
self.noDataText = "You need to provide data for the chart."
var dataEntries: [BarChartDataEntry] = []
for i in 0..<dataPoints.count {
let dataEntry = BarChartDataEntry(x: Double(i), y: Double(values[i]) )
dataEntries.append(dataEntry)
}
let chartDataSet = BarChartDataSet(values: dataEntries, label: "Units Sold")
let chartData = BarChartData(dataSet: chartDataSet)
self.data = chartData
You can convert [Int] to Double, so that fixed my issue. I changed the variable months: [String] to
let months = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
import UIKit
import Charts
class ViewController: UIViewController, ChartViewDelegate {
#IBOutlet weak var barChartView: BarChartView!
weak var axisFormatDelegate: IAxisValueFormatter?
var months: [String]!
var unitsSold = [Double]()
override func viewDidLoad() {
super.viewDidLoad()
barChartView.delegate = self
axisFormatDelegate = self
months = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
unitsSold = [20.0, 54.0, 6.0, 30.0, 92.0, 16.0,114.0]
setChart(dataPoints: months, values: unitsSold)
}
func setChart(dataPoints: [String], values: [Double]) {
barChartView.noDataText = "You need to provide data for the chart."
// Prevent from setting an empty data set to the chart (crashes)
guard dataPoints.count > 0 else { return }
var dataEntries = [BarChartDataEntry]()
for i in 0..<dataPoints.count {
let entry = BarChartDataEntry(x: Double(i), y: values[i], data: months as AnyObject?)
dataEntries.append(entry)
}
let chartDataSet = BarChartDataSet(entries: dataEntries, label: "Units Sold")
chartDataSet.drawValuesEnabled = false
chartDataSet.colors = [UIColor.red]
chartDataSet.colors = [UIColor.lightGray]
chartDataSet.highlightColor = UIColor.orange.withAlphaComponent(0.3)
chartDataSet.highlightAlpha = 1
let chartData = BarChartData(dataSet: chartDataSet)
barChartView.data = chartData
let xAxisValue = barChartView.xAxis
xAxisValue.valueFormatter = axisFormatDelegate
// chartDataSet.colors = ChartColorTemplates.colorful() //multiple colors
//Animation bars
barChartView.animate(xAxisDuration: 0.0, yAxisDuration: 1.0, easingOption: .easeInCubic)
// X axis configurations
barChartView.xAxis.granularityEnabled = true
barChartView.xAxis.granularity = 1
barChartView.xAxis.drawAxisLineEnabled = true
barChartView.xAxis.drawGridLinesEnabled = false
barChartView.xAxis.labelFont = UIFont.systemFont(ofSize: 15.0)
barChartView.xAxis.labelTextColor = UIColor.black
barChartView.xAxis.labelPosition = .bottom
// Right axis configurations
barChartView.rightAxis.drawAxisLineEnabled = false
barChartView.rightAxis.drawGridLinesEnabled = false
barChartView.rightAxis.drawLabelsEnabled = false
// Other configurations
barChartView.highlightPerDragEnabled = false
barChartView.chartDescription?.text = ""
barChartView.legend.enabled = false
barChartView.pinchZoomEnabled = false
barChartView.doubleTapToZoomEnabled = false
barChartView.scaleYEnabled = false
barChartView.drawMarkers = true
let l = barChartView.legend
l.horizontalAlignment = .left
l.verticalAlignment = .bottom
l.orientation = .horizontal
l.drawInside = false
l.form = .circle
l.formSize = 9
l.font = UIFont(name: "HelveticaNeue-Light", size: 11)!
l.xEntrySpace = 4
// On tapped bar marker before adding BalloonMarker.swift
let marker = BalloonMarker(color: UIColor.orange, font: UIFont.boldSystemFont(ofSize: 13), textColor: UIColor.white, insets: UIEdgeInsets(top: 7.0, left: 7.0, bottom: 15.0, right: 7.0))
marker.chartView = barChartView
barChartView.marker = marker
}
}
extension ViewController: IAxisValueFormatter {
func stringForValue(_ value: Double, axis: AxisBase?) -> String {
return months[Int(value)]
}
}
Install pod file
Assign barchartview class to chart view in storyboad
Follow setchart() method
For ballon marker add BallonMarker.swift file to your project library for this file chartsDemo->Components-> BallonMarker.swift
I have implemented a demo for that
This will Support Swift 4.2 and above
Check this link :
https://github.com/vijay1864/Barchart-Demo-with-Charts-Library
This Demo was Made with help of danielgindi Charts Library
https://github.com/danielgindi/Charts
You can iterate month and units sold values as xVal and yVal.
var barChartValues: [BarChartDataEntry] = []
for (key,val) in self.barChartDataval.enumerated() {
let xVal = Double(key)
let yVal = Double(val.cost)
let dataEntry = BarChartDataEntry(x: xVal, y: yVal!)
barChartValues.append(dataEntry)
}
let chartDataSet = BarChartDataSet(values: barChartValues, label: "Expenses Summary")
chartDataSet.colors = [Constants.k_COLORS.BLUE]
var dataSets = [IChartDataSet]()
dataSets.append(chartDataSet)
let chartData = BarChartData(dataSets: dataSets)
self.barChartView.data = chartData
self.barChartView.chartDescription?.text = ""
self.barChartView.animate(xAxisDuration: 2.0, yAxisDuration: 2.0, easingOption: .easeInBounce)
For Line chart We can have following
import UIKit
import Charts
class LineChartVC: UIViewController , ChartViewDelegate{
#IBOutlet var lineChartView: LineChartView!
var months: [String]!
override func viewDidLoad() {
super.viewDidLoad()
self.lineChartSetUp()
}
}
extension LineChartVC{
func lineChartSetUp(){
self.lineChartView.delegate = self
self.lineChartView.chartDescription?.enabled = false//true
self.lineChartView.dragEnabled = true
self.lineChartView.setScaleEnabled(true)
self.lineChartView.pinchZoomEnabled = true
self.lineChartView.drawGridBackgroundEnabled = false
// x-axis limit line
/*
let llXAxis = ChartLimitLine(limit: 10.0, label: "Index 10")
llXAxis.lineWidth = 4.0
llXAxis.lineDashLengths = [(10.0), (10.0), (0.0)]
llXAxis.labelPosition = ChartLimitLine.LabelPosition.rightBottom//ChartLimitLabelPositionRightBottom
llXAxis.valueFont = UIFont.systemFont(ofSize: 10.0)
//[_chartView.xAxis addLimitLine:llXAxis];
self.lineChartView.xAxis.gridLineDashLengths = [10.0, 10.0]
self.lineChartView.xAxis.gridLineDashPhase = 0.0
let ll1 = ChartLimitLine(limit: 150.0, label: "Upper Limit")
ll1.lineWidth = 4.0
ll1.lineDashLengths = [5.0, 5.0]
ll1.labelPosition = ChartLimitLine.LabelPosition.rightTop //ChartLimitLabelPositionRightTop
ll1.valueFont = UIFont.systemFont(ofSize: 10.0)
let ll2 = ChartLimitLine(limit: -30.0, label: "Lower Limit")
ll2.lineWidth = 4.0
ll2.lineDashLengths = [5.0, 5.0]
ll2.labelPosition = ChartLimitLine.LabelPosition.rightBottom//ChartLimitLabelPositionRightBottom
ll2.valueFont = UIFont.systemFont(ofSize: 10.0)
let leftAxis: YAxis? = self.lineChartView.leftAxis
leftAxis?.removeAllLimitLines()
// leftAxis?.addLimitLine(ll1)
// leftAxis?.addLimitLine(ll2)
// leftAxis?.axisMaximum = 200.0
// leftAxis?.axisMinimum = -50.0
// leftAxis?.axisMaximum = 100.0
// leftAxis?.axisMinimum = 0.0
//
leftAxis?.gridLineDashLengths = [5.0, 5.0]
leftAxis?.drawZeroLineEnabled = false
leftAxis?.drawLimitLinesBehindDataEnabled = true
self.lineChartView.rightAxis.enabled = false
//[_chartView.viewPortHandler setMaximumScaleY: 2.f];
//[_chartView.viewPortHandler setMaximumScaleX: 2.f];
*/
let marker = BalloonMarker(color: UIColor(white: 180 / 255.0, alpha: 1.0), font: UIFont.systemFont(ofSize: 12.0), textColor: UIColor.white, insets: UIEdgeInsetsMake(8.0, 8.0, 20.0, 8.0))
marker.chartView = self.lineChartView
marker.minimumSize = CGSize(width: 80.0, height: 40.0)
self.lineChartView.marker = marker
self.lineChartView.legend.form = Legend.Form(rawValue: 5)!
months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0, 4.0, 18.0, 2.0, 4.0, 5.0, 4.0]
self.setChart(months, values: unitsSold)
}
func setChart(_ dataPoints: [String], values: [Double]) {
var dataEntries: [ChartDataEntry] = []
for i in 0..<dataPoints.count {
let dataEntry = ChartDataEntry(x:Double(i) , y: values[i])
dataEntries.append(dataEntry)
}
print(dataEntries )
let data = LineChartData()
let ds1 = LineChartDataSet(values: dataEntries, label: "Units Sold")
ds1.colors = [UIColor.red]
data.addDataSet(ds1)
self.lineChartView.data = data
}
func chartValueSelected(chartView: ChartViewBase, entry: ChartDataEntry, dataSetIndex: Int, highlight: Highlight) {
// print("\(entry.value) in \(months[dataSetIndex])")
print(entry )
}
}

Charts3.0 - Can not show all the xAxis label if more than 8 value - Swift

I had create a bar chart which had the 9 categories label for the xAxis:
["Foods", "House Loan", "Insurance", "Petrol", "Saving", "Train", "Others", "Books & Magazine", "Car park"]
But in the charts it just show:
Foods, Insurance, Saving, Others and Car park
Any one know how to solve it?
Here the source code for setting xAxis
func setChart(dataPoints: [String], values: [Double]) {
var dataEntries: [BarChartDataEntry] = []
for i in 0..<dataPoints.count {
let value = values[i] as Double
let dataEntry = BarChartDataEntry(x: Double(i), y:value)
dataEntries.append(dataEntry)
}
let chartDataSet = BarChartDataSet(values: dataEntries, label: "Total Amount")
var colors: [UIColor] = []
for _ in 0..<dataPoints.count {
let red = Double(arc4random_uniform(256))
let green = Double(arc4random_uniform(256))
let blue = Double(arc4random_uniform(256))
let color = UIColor(red: CGFloat(red/255), green: CGFloat(green/255), blue: CGFloat(blue/255), alpha: 1)
colors.append(color)
}
chartDataSet.colors = colors
chartDataSet.colors = ChartColorTemplates.joyful()
barChartView.chartDescription?.text = ""
barChartView.xAxis.labelPosition = .bottom
barChartView.xAxis.drawGridLinesEnabled = false
barChartView.xAxis.granularityEnabled = true
barChartView.xAxis.granularity = 1.0
barChartView.xAxis.decimals = 0
let chartData = BarChartData()
chartData.addDataSet(chartDataSet)
barChartView.data = chartData
barChartView.xAxis.valueFormatter = self
let format = NumberFormatter()
format.numberStyle = .decimal
let formatter = DefaultValueFormatter(formatter: format)
chartData.setValueFormatter(formatter)
barChartView.animate(xAxisDuration: TimeInterval(1))
}
Just need to set the label count.
barChartView.xAxis.labelCount = dataPoints.count