问题描述
我是iOS上使用核心绘图的新手，我能够毫无问题地设置图表。但是，当我将xaxis和yaxis值添加到图形中时，就会根据下面的图片获得
。与此同时，我尝试使用CPTScaleTypeLog，但没有任何运气
override func viewDidLoad() {
super.viewDidLoad()
print(arrayPressure);
print(array2)
initPlot()
}
func initPlot() {
configurehostingView()
configureGraph()
configureChart()
configureAxes()
}
func configurehostingView() {
hostingView.allowPinchScaling = false
}
func configureGraph() {
// 1 - Create the graph
let graph = CPTXYGraph(frame: hostingView.bounds)
graph.plotAreaFrame?.masksToBorder = false
hostingView.hostedGraph = graph
// 2 - Configure the graph
//graph.apply(CPTTheme(named: CPTThemeName.plainWhiteTheme))
//graph.fill = CPTFill(color: CPTColor.clear())
graph.paddingBottom = 30.0
graph.paddingLeft = 30.0
graph.paddingTop = 0.0
graph.paddingRight = 0.0
// 3 - Set up styles
let titleStyle = CPTMutableTextStyle()
titleStyle.color = CPTColor.black()
titleStyle.fontName = "HelveticaNeue-Bold"
titleStyle.fontSize = 16.0
titleStyle.textAlignment = .center
graph.titleTextStyle = titleStyle
let title = "Pressure Buildup Chart"
graph.title = title
graph.titlePlotAreaFrameAnchor = .top
graph.titledisplacement = CGPoint(x: 0.0,y: 0.0)
// 4 - Set up plot space
let xMin = 1.0
let xMax = Double(array2.max()!) + 100
let yMin = Double(minY) - 100
let yMax = Double(maxY) + 100
guard let plotSpace = graph.defaultPlotSpace as? CPTXYPlotSpace else { return }
plotSpace.xrange = CPTPlotRange(locationDecimal: CPTDecimalFromDouble(xMin),lengthDecimal: CPTDecimalFromDouble(xMax - xMin))
plotSpace.yRange = CPTPlotRange(locationDecimal: CPTDecimalFromDouble(yMin),lengthDecimal: CPTDecimalFromDouble(yMax - yMin))
// let axisSet = graph.axisSet as! CPTXYAxisSet
//
// if let x = axisSet.xAxis {
// x.axisLinestyle = nil
// x.majorTickLinestyle = nil
// x.minorTickLinestyle = nil
// x.majorIntervalLength = 5.0
// x.orthogonalPosition = 0.0
// x.title = "X Axis"
// x.titleLocation = 7.5
// x.titleOffset = 55.0
//
// // Custom labels
// x.labelRotation = CGFloat(.pi / 4.0)
// x.labelingPolicy = .none
//
// let customTickLocations = [1,10,100,1000]
// let xAxisLabels = ["1","10","100","1000"]
//
// var labelLocation = 0
// var customLabels = Set<CPTAxisLabel>()
// for tickLocation in customTickLocations {
// let newLabel = CPTAxisLabel(text:xAxisLabels[labelLocation],textStyle:x.labelTextStyle)
// labelLocation += 1
// newLabel.tickLocation = tickLocation as NSNumber
// newLabel.offset = x.labelOffset + x.majorTickLength
// newLabel.rotation = CGFloat(.pi / 4.0)
// customLabels.insert(newLabel)
// }
//
// x.axisLabels = customLabels
// }
}
func configureChart() {
// 1 - Set up the plot
plot = CPTScatterPlot()
// 2 - Set up style
let plotLinestile = CPTMutableLinestyle()
plotLinestile.linewidth = 1
plotLinestile.lineColor = CPTColor.black()
plot.dataLinestyle = plotLinestile
// 3- Add plots to graph
guard let graph = hostingView.hostedGraph else { return }
plot.dataSource = self
plot.delegate = self
graph.add(plot,to: graph.defaultPlotSpace)
}
func configureAxes() {
}
}
extension buildupTestViewController: CPTScatterPlotDataSource,CPTScatterPlotDelegate {
func numberOfRecords(for plot: CPTPlot) -> UInt {
// number of points
return UInt(array2.count)
}
func number(for plot: CPTPlot,field: UInt,record: UInt) -> Any? {
switch CPTScatterPlotField(rawValue: Int(field))! {
case .X:
let xVal = self.array2[Int(record)]
return xVal
case .Y:
let yVal = self.arrayPressure[Int(record)]
return yVal
}
}
}
以下是xaxis和yaxis对应
[3553.0,3572.0,3607.0,3632.0,3652.0,3684.0,3707.0,3724.0,3737.0,3768.0,3777.0,3781.0,3782.0,3786.0,3787.0]
[961.01465,385.0,193.0,129.0,97.0,65.0,49.0,39.4,33.0,20.2,10.6,6.3333335,5.0,3.0,2.3333333]
这就是我想要达到的目标
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）