我一直在关注iOS图表的简单教程。
我的图表中的值现在正确显示,但底部的标签未显示。
override func viewDidLoad() {
results = ["Won", "Drawn", "Lost"]
let games = [totalWins, totalDraws, totalLosses]
setChart(dataPoints: results, values: games)
}
// CHART FUNCTION ************
func setChart(dataPoints: [String], values: [Double]){
barChartView.noDataText = "you need to provide some data for the chart."
var dataEntries: [BarChartDataEntry] = Array()
for i in 0..<dataPoints.count {
let dataEntry = BarChartDataEntry(x: Double(i), y: values[i])
dataEntries.append(dataEntry)
}
let chartDataSet = BarChartDataSet(values: dataEntries, label: "Games Played")
//let chartData = BarChartData(xVals: self.results, dataSet: dataEntries)
let chartData = BarChartData()
self.barChartView.xAxis.labelPosition = XAxis.LabelPosition.bottom
barChartView.leftAxis.granularityEnabled = true
barChartView.rightAxis.enabled = false
barChartView.leftAxis.granularity = 1.0
chartData.addDataSet(chartDataSet)
barChartView.data = chartData
}
// END OF CHART FUNCTION ***********
正如你所看到的那样,它显示的是数字,而不是“赢,拉,失去”
我相信这是因为我需要在这样的命令中分配标签:
let chartData = BarChartData(xVals: self.results, dataSet: dataSet)
chartView.data = chartData
但是我得到了错误,我不知道在dataSet中需要什么,因为我从另一个线程中获取了该解决方案,似乎无法将其修改为工作。
临时图片:
答案 0 :(得分:2)
您可以互换x和y值。
let dataEntry = BarChartDataEntry(x: Double(i), y: values[i])
要将X轴放在底部,您必须添加以下内容。
self.barChartView.xAxis.labelPosition = XAxis.LabelPosition.bottom
请查找我的样本数据集的工作代码。
class BarChartViewController: UIViewController {
@IBOutlet weak var barChartView: BarChartView!
override func viewDidLoad() {
super.viewDidLoad()
let values = [11.00, 90.95, 250.00, 40.90, 60.88, 99.99, 25.00]
setChart(values: values)
}
func setChart(values: [Double]) {
var daysEntries: [BarChartDataEntry] = []
for i in 0..<values.count {
let dataEntry = BarChartDataEntry(x : Double(i), y : values[i])
daysEntries.append(dataEntry)
}
let data = BarChartData()
let ds1 = BarChartDataSet(values: daysEntries, label: "Days")
ds1.colors = [NSUIColor.red]
data.addDataSet(ds1)
self.barChartView.data = data
self.barChartView.gridBackgroundColor = NSUIColor.white
self.barChartView.chartDescription?.text = "Barchart Days and Gross"
self.barChartView.rightAxis.enabled = true
self.barChartView.xAxis.labelPosition = XAxis.LabelPosition.bottom
self.barChartView.xAxis.axisRange = 5.0
}
override func viewWillAppear(_ animated: Bool) {
self.barChartView.animate(xAxisDuration: 1.0, yAxisDuration: 1.0)
}
}
由于 斯利拉姆
答案 1 :(得分:2)
我有同样的问题,我用这三行修正了它:
[ "123-12 abc, qwerty", "pol, T. top", "14-89 toy, rap"]
答案 2 :(得分:0)
AttributeError: 'bytes' object has no attribute 'n'
答案 3 :(得分:0)
我希望这可以帮助您控制xAxis标签的位置。
第一种方法
chartView.setExtraOffsets(left: 20, top: 0, right: 0, bottom: 0)
第二种方法
chartView.xAxis.avoidFirstLastClippingEnabled = true