1.
combinedChart.zoom(scaleX: 1.0, scaleY: 1.0, x: 0.0, y: 0.0)
2.使用以下一项或多项:
combinedChart.xAxis.drawAxisLineEnabled = true
combinedChart.xAxis.drawGridLinesEnabled = true
combinedChart.rightAxis.drawGridLinesEnabled = true
combinedChart.leftAxis.drawGridLinesEnabled = true
combinedChart.rightAxis.drawGridLinesEnabled = true
combinedChart.leftAxis.drawAxisLineEnabled = true
3.
combinedChart.highlightValue(x: 0, dataSetIndex: 0)