我正在使用iOS图表库来集成LineChartView,我必须创建下面的图表:
到目前为止我已经实现了这个目
我在这里遇到三个问题:
xAxis
缺少2月和6月的文字。如图所示,是否有可能在月份上方添加小标记,以便在xAxis
中显示月份?
实施代码:
months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
let unitsSold = [50.0, 25.0, 50.0, 75.0, 100.0, 75.0]
setChart(dataPoints: months, values: unitsSold)
和setChart
方法:
func setChart(dataPoints: [String], values: [Double]) {
var dataEntries: [ChartDataEntry] = []
for i in 0..<dataPoints.count {
let dataEntry = ChartDataEntry(x: Double(i), y: values[i], data: dataPoints[i] as AnyObject)
dataEntries.append(dataEntry)
}
let chartDataSet = LineChartDataSet(values: dataEntries, label: nil)
chartDataSet.circleRadius = 5
chartDataSet.circleHoleRadius = 2
chartDataSet.drawValuesEnabled = false
let chartData = LineChartData(dataSets: [chartDataSet])
lineChartView.data = chartData
lineChartView.xAxis.valueFormatter = IndexAxisValueFormatter(values: months)
lineChartView.xAxis.labelPosition = .bottom
lineChartView.xAxis.drawGridLinesEnabled = false
lineChartView.xAxis.avoidFirstLastClippingEnabled = true
lineChartView.rightAxis.drawAxisLineEnabled = false
lineChartView.rightAxis.drawLabelsEnabled = false
lineChartView.leftAxis.drawAxisLineEnabled = false
lineChartView.pinchZoomEnabled = false
lineChartView.doubleTapToZoomEnabled = false
lineChartView.legend.enabled = false
}
如果有人在swift中使用图表,请帮忙。
1)为了避免人群Chart
通过缩放显示图形轴上有限的数据,用户可以看到整个数据
2)对于左右间距:从界面构建器给出左右约束
3)要隐藏描述,您可以使用下面的代码
lineChartView.chartDescription?.text = " "
希望这对你有所帮助