[Swift] [iOS] チャート表示ライブラリ [ios-charts] ref: http://qiita.com/touyu/items/4fbd6d8187eb74752ba0

file0.txt

platform :ios, '9.0'
pod 'Charts'
use_frameworks!

file1.swift

@IBOutlet var barChartView: BarChartView!

file2.swift

import UIKit
import Charts

class ViewController: UIViewController {

    // storyboardから接続
    @IBOutlet weak var barChartView: BarChartView!

    var months: [String]!

    override func viewDidLoad() {
        super.viewDidLoad()

        months = ["1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"]
        let unitsSold = [50.3, 68.3, 113.3, 115.7, 160.8, 214.0, 220.4, 132.1, 176.2, 120.9, 71.3, 48.0]

        barChartView.animate(yAxisDuration: 2.0)
        barChartView.pinchZoomEnabled = false
        barChartView.drawBarShadowEnabled = false
        barChartView.drawBordersEnabled = true
        barChartView.descriptionText = "京都府の月毎の降水量グラフ"

        setChart(months, values: unitsSold)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func setChart(dataPoints: [String], values: [Double]) {
        barChartView.noDataText = "You need to provide data for the chart."

        var dataEntries: [BarChartDataEntry] = []

        for i in 0..<dataPoints.count {
            let dataEntry = BarChartDataEntry(value: values[i], xIndex: i)
            dataEntries.append(dataEntry)
        }

        let chartDataSet = BarChartDataSet(yVals: dataEntries, label: "降水量")
        let chartData = BarChartData(xVals: months, dataSet: chartDataSet)
        barChartView.data = chartData  
    }

}