Swift package for displaying charts effortlessly

by iOS Example

ChartView

ChartView made in SwiftUI.

It supports:

  • Line charts
  • Bar charts
  • Pie charts

Installation:

It requires iOS 13 and Xcode 11!

In Xcode got to File -> Swift Packages -> Add Package Dependency and paste inthe repo's url: https://github.com/AppPear/ChartView

Usage:

import the package in the file you would like to use it: import SwiftUICharts

You can display a Chart by adding a chart view to your parent view:

Demo

Added an example project, with iOS, watchOS target: https://github.com/AppPear/ChartViewDemo

Line charts

New full screen view called LineView!!!

 LineView(data: [8,23,54,32,12,37,7,23,43], title: "Line chart", legend: "Full screen") // legend is optional, use optional .padding()

Adopts to dark mode automatically

Line chart is interactive, so you can drag across to reveal the data points

You can add a line chart with the following code:

 LineChartView(data: [8,23,54,32,12,37,7,23,43], title: "Title", legend: "Legendary") // legend is optional

Turn drop shadow off by adding to the Initialiser: dropShadow: false

Bar charts

[New feature] you can display labels also along values and points for each bar to descirbe your data better!
Bar chart is interactive, so you can drag across to reveal the data points

You can add a bar chart with the following code:

Labels and points:

 BarChartView(data: ChartData(values: [("2018 Q4",63150), ("2019 Q1",50900), ("2019 Q2",77550), ("2019 Q3",79600), ("2019 Q4",92550)]), title: "Sales", legend: "Quarterly") // legend is optional

Only points:

 BarChartView(data: ChartData(points: [8,23,54,32,12,37,7,23,43]), title: "Title", legend: "Legendary") // legend is optional

ChartData structure
Stores values in data pairs (actually tuple): (String,Double)

  • you can have duplicate values
  • keeps the data order

You can initialise ChartData multiple ways:

  • For integer values: ChartData(points: [8,23,54,32,12,37,7,23,43])
  • For floating point values: ChartData(points: [2.34,3.14,4.56])
  • For label,value pairs: ChartData(values: [("2018 Q4",63150), ("2019 Q1",50900)])

You can add different formats:

  • Small ChartForm.small
  • Medium ChartForm.medium
  • Large ChartForm.large
BarChartView(data: ChartData(points: [8,23,54,32,12,37,7,23,43]), title: "Title", form: ChartForm.small)

For floating point numbers, you can set a custom specifier:

BarChartView(data: ChartData(points:[1.23,2.43,3.37]) ,title: "A", valueSpecifier: "%.2f")

For integers you can disable by passing: valueSpecifier: "%.0f"

You can set your custom image in the upper right corner by passing in the initialiser: cornerImage:Image(systemName: "waveform.path.ecg")

Turn drop shadow off by adding to the Initialiser: dropShadow: false

You can customize styling of the chart with a ChartStyle object:

Customizable:

  • background color
  • accent color
  • second gradient color
  • text color
  • legend text color
 let chartStyle = ChartStyle(backgroundColor: Color.black, accentColor: Colors.OrangeStart, secondGradientColor: Colors.OrangeEnd, chartFormSize: ChartForm.medium, textColor: Color.white, legendTextColor: Color.white )
 ...
 BarChartView(data: [8,23,54,32,12,37,7,23,43], title: "Title", style: chartStyle)

You can access built-in styles:

 BarChartView(data: [8,23,54,32,12,37,7,23,43], title: "Title", style: Styles.barChartMidnightGreen)

All styles available as a preset:

  • barChartStyleOrangeLight
  • barChartStyleOrangeDark
  • barChartStyleNeonBlueLight
  • barChartStyleNeonBlueDark
  • barChartMidnightGreenLight
  • barChartMidnightGreenDark

You can customize the size of the chart with a ChartForm object:

ChartForm

  • .small
  • .medium
  • .large
  • .detail
BarChartView(data: [8,23,54,32,12,37,7,23,43], title: "Title", form: ChartForm.small)

WatchOS support for Bar charts:

Pie charts

You can add a pie chart with the following code:

 PieChartView(data: [8,23,54,32], title: "Title", legend: "Legendary") // legend is optional

Turn drop shadow off by adding to the Initialiser: dropShadow: false

GitHub