当图表上没有数据图时图表视口高度增加

Question

我正在使用 https://github.com/danielgindi/Charts 库。当图表没有数据时，图表高度增加应该与图表有数据时相同。图表 xAxis 标签与字符标题重叠。任何帮助，将不胜感激。图表设置代码

var dataEntries: [ChartDataEntry] = []

        axisFormatDelegate = self
        chartView.legend.form = .none
        
        let rightAxis = chartView.rightAxis
        rightAxis.enabled = false
        
        let yAxis = chartView.leftAxis
       
        let xAxisValue = chartView.xAxis
        xAxisValue.valueFormatter = axisFormatDelegate
        
        xAxisValue.axisMinimum = -1
        xAxisValue.axisMaximum = Double(forX.count)
        xAxisValue.granularity = 1
        
        for i in 0..<forX.count {
            
            if forY[i] != 0 {
                
                let dataEntry = ChartDataEntry(x: Double(i), y: forY[i])
                dataEntries.append(dataEntry)
            }
            
        }
        

        let lineChartDataSet = LineChartDataSet(entries: dataEntries, label: "")
        let lineChartData = LineChartData(dataSet: lineChartDataSet)
        print("Line chart data: \(lineChartData.dataSets)")
        chartView.data = lineChartData

包含数据的图表：

没有数据的图表：

Answer 1

我认为是因为您将 legend.form 设置为 .none，它没有显示图例，但仍然有 space

我通常用它来隐藏图例并在 xAxis 标签底部使用额外的边距

chartView.legend.enabled = false
chartView.extraBottomOffset = 10

当图表上没有数据图时图表视口高度增加

Chart viewport height increase when chart has no data plot on chart

swift

ios-charts