图表库" SwiftCharts"可以显示"默认" maxValue,midValue和minValue,但是如何隐藏midValue" 98" ?请帮帮我,谢谢!
我在SwiftCharts上使用了演示项目: 码 func initializeChart(cell:MarketPriceCell,index:Int){
//初始化数据系列和标签
var serieData: [Double] = []
var labels: [Double] = []
var labelsAsString: Array<String> = []
let beginInd = 0
let oneFour = stockValuesAll.count / 4
let twoFour = (stockValuesAll.count * 2) / 4
let thrFour = (stockValuesAll.count * 3) / 4
labels = [Double(beginInd), (Double(oneFour)), (Double(twoFour)),(Double(thrFour))]
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyyMMdd"
let ddate1 = dateFormatter.string(from: stockValuesAll[beginInd]["date"] as! Date)
let ddate2 = dateFormatter.string(from: stockValuesAll[oneFour]["date"] as! Date)
let ddate3 = dateFormatter.string(from: stockValuesAll[twoFour]["date"] as! Date)
let ddate4 = dateFormatter.string(from: stockValuesAll[thrFour]["date"] as! Date)
labelsAsString = [ddate1,ddate2,ddate3,ddate4]
/// Date formatter to retrieve the month names
for (_, value) in stockValuesAll.enumerated() {
serieData.append(value["close"] as! Double)
}
let series = ChartSeries(serieData)
series.area = true
// Configure chart layout
cell.stkChart.lineWidth = 0.5
cell.stkChart.labelFont = UIFont.systemFont(ofSize: 12)
cell.stkChart.xLabels = labels
cell.stkChart.xLabelsFormatter = { (labelIndex: Int, labelValue: Double) -> String in
return labelsAsString[labelIndex]
}
cell.stkChart.xLabelsTextAlignment = .left
cell.stkChart.minY = serieData.min()! - 5
cell.stkChart.add(series)
Json文件:
{
"quotes":
[
{ "date": "2017-07-01", "close": 93.52 },
{ "date": "2017-07-02", "close": 93.48 },
{ "date": "2017-07-03", "close": 94.03 },
{ "date": "2017-07-07", "close": 95.97 }...
答案 0 :(得分:0)
y轴的标签在以下功能中设置:
fileprivate func drawLabelsAndGridOnYAxis() {
let context = UIGraphicsGetCurrentContext()!
context.setStrokeColor(gridColor.cgColor)
context.setLineWidth(0.5)
var labels: [Double]
if yLabels == nil {
labels = [(min.y + max.y) / 2, max.y]
if yLabelsOnRightSide || min.y != 0 {
labels.insert(min.y, at: 0)
}
} else {
labels = yLabels!
}
因此您必须设置自己的yLabel数组(仅包含min和max)并将它们分配给您的图表。 另一个选择是更改上面的代码并删除midvalue的项目:
if yLabels == nil {
labels = [max.y]