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Programming language: Swift
Tags: Charts    
Latest version: v1.0.0

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README

Swift LineChart

line chart demo

Usage

var lineChart = LineChart()
lineChart.addLine([3, 4, 9, 11, 13, 15])

Features

  • Super simple
  • Highly customizable
  • Auto scaling
  • Touch enabled
  • Area below lines

Properties

Both x and y properties are of type Coordinate. Each can be customized separately and has its own settings for labels, gridlines and axis.

  • labels: Labels
  • grid: Grid
  • axis: Axis

Labels can be switched on and off and they can have custom values.

  • visible: Bool = true
  • values: [String] = []

Grid can also be switched on/off, has a custom color and you can specify how many gridlines you'd like to show.

  • visible: Bool = true
  • count: CGFloat = 10
  • color: UIColor = UIColor(red: 238/255.0, green: 238/255.0, blue: 238/255.0, alpha: 1) // #eeeeee

Axis can be switched on/off, has a property to its color and you can specify how much the axis is inset from the border of your UIView.

  • visible: Bool = true
  • color: UIColor = UIColor(red: 96/255.0, green: 125/255.0, blue: 139/255.0, alpha: 1) // 607d8b
  • inset: CGFloat = 15

Animations can be customized through the Animation settings.

  • enabled: Bool = true
  • duration: CFTimeInterval = 1

If you'd like to show extra dots at your data points use the Dots features.

  • visible: Bool = true
  • color: UIColor = UIColor.whiteColor()
  • innerRadius: CGFloat = 8
  • outerRadius: CGFloat = 12
  • innerRadiusHighlighted: CGFloat = 8
  • outerRadiusHighlighted: CGFloat = 12

In addition to the above mentioned features you can further customize your chart.

  • area: Bool = true - Fill the area between line and x axis
  • lineWidth: CGFloat = 2 - Set the line width
  • colors: [UIColor] = [...] - Colors for your line charts

Methods

Add line to chart.

lineChart.addLine(data: [CGFloat])

Remove charts, areas and labels but keep axis and grid.

lineChart.clear()

Make whole UIView white again

lineChart.clearAll()

Delegates

didSelectDataPoint()

Touch event happened at or close to data point.

func didSelectDataPoint(x: CGFloat, yValues: [CGFloat]) {
  println("\(x) and \(yValues)")
}

Examples

Single line with default settings.

line chart demo

var lineChart = LineChart()
lineChart.addLine([3, 4, 9, 11, 13, 15])

Two lines without grid and dots.

two lines without grid and dots

var lineChart = LineChart()
lineChart.area = false
lineChart.x.grid.visible = false
lineChart.x.labels.visible = false
lineChart.y.grid.visible = false
lineChart.y.labels.visible = false
lineChart.dots.visible = false
lineChart.addLine([3, 4, 9, 11, 13, 15])
lineChart.addLine([5, 4, 3, 6, 6, 7])

Show x and y axis

chart with x and y axis

var lineChart = LineChart()
lineChart.area = false
lineChart.x.grid.count = 5
lineChart.y.grid.count = 5
lineChart.addLine([3, 4, 9, 11, 13, 15])
lineChart.addLine([5, 4, 3, 6, 6, 7])

License

MIT


*Note that all licence references and agreements mentioned in the Swift LineChart README section above are relevant to that project's source code only.