ios - 使用图表设置饼图的最大值和宽度

Question

您好，我正在使用图表库，并且已经构建了一些图表，但是我想用 PieChart 做一些特殊的事情，但我还不能做到这一点，我不知道哪些属性可以设置我的饼图就像你想要的那样。好的，那么我想将图表的最大值设置为 100，通过设置此值，我想我的图表将仅显示我在本例中尝试显示的数字 es 50，而图表的其他部分应该显示看起来空荡荡的。我希望你能帮助我。

This is what I have now the graph has just one Double value that value is 50

This is the way that the graph should look like

Answer 1

 func createPieGraphRedemptions() {
        var chart = PieChartView()
        chart = PieChartView(frame: CGRect(x: 229, y: 40, width: 165, height: 165))
        let yVals: [Double] = [50]
        var entries = [ ChartDataEntry]()
        for (i, v) in yVals.enumerated() {
            let entry = ChartDataEntry()
            entry.x = Double( i)
            entry.y = v

            entries.append( entry)
        }
        let set = PieChartDataSet( values: entries, label: "Pie Chart")

        set.colors = [UIColor.red]

        let data = PieChartData( dataSet: set)
        //data.setDrawValues(false)
        chart.data = data
        chart.noDataText = "No hay datos disponibles"
        chart.isUserInteractionEnabled = false
        chart.legend.enabled = false
        chart.chartDescription?.text = ""
        chart.highlighter = nil



        self.view.addSubview(chart)
    }