Easy to use Spider (Radar) Chart library for iOS written in Swift.

Deniz Adalar

Last update: Nov 14, 2022

Overview

DDSpiderChart

Easy to use Spider (Radar) Chart library for iOS written in Swift.

Requirements

iOS 8.0+ / macOS 10.10+ / tvOS 9.0+ / watchOS 2.0+
Xcode 8.0+
Swift 3.0+

Installation

CocoaPods

DDSpiderChart is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "DDSpiderChart"

Usage

Styling in Interface Builder

You can use DDSpiderChartView within Interface Builder. Just drag & drop a UIView and set its class to DDSpiderChartView. The library supports IBDesignable protocol, so you will see your customized chart in Xcode.

Programmatically

To create a new instance of the chart:

let spiderChartView = DDSpiderChartView(frame: .zero) // Replace with some frame or add constraints
spiderChartView.axes = ["Axis 1", "Axis 2", "Axis 3", "Axis 4"] // Set axes by giving their labels
spiderChartView.addDataSet(values: [1.0, 0.5, 0.75, 0.6], color: .red) // Add first data set
spiderChartView.addDataSet(values: [0.9, 0.7, 0.75, 0.7], color: .blue) // Add second data set

To remove a data set from chart:

let dataSet1 = spiderChartView.addDataSet(values: [0.9, 0.7, 0.75, 0.7], color: .blue) // Add second data set
// Later
spiderChartView.removeDataSetView(dataSet!)

Customization:

spiderChartView.color = .white // This will change the color of the circles
spiderChartView.circleCount = 20 // How many circles there will be
spiderChartView.circleGap = 5 // The distance between circles
// circleCount * circleGap would be the radius of the chart itself

Text Styling: (It just works by passing an array of NSAttributedString's as axes. You have a lot flexibility this way.)

// Custom font with custom size & color example
func attributedAxisLabel(_ label: String) -> NSAttributedString {
  let attributedString = NSMutableAttributedString()
  attributedString.append(NSAttributedString(string: label, attributes: [NSAttributedStringKey.foregroundColor: UIColor.black, NSAttributedStringKey.font: UIFont(name: "AvenirNextCondensed-Bold", size: 16)!]))
  return attributedString
}
    
override func viewDidLoad() {
  super.viewDidLoad()
  spiderChartView.axes = ["PAS", "DRI", "SPD", "DEF", "PHY", "SHT"].map { attributedAxisLabel($0) }
}

Author

Deniz Adalar, [email protected]

License

DDSpiderChart is available under the MIT license. See the LICENSE file for more info.

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Comments

lines are not linking to circles

hey, thank you for the cool library, for some reason the lines that go from the centre of the circle to the headings aren't connecting.

tested it with many different amounts of heading and same problem

works correctly once I set the values of the circle count to 4 and circle gap to 30

only tested on iphone 8 plus

opened by tonmanayo 4