大家好,我最近尝试了很棒的iOS图表库。
我制作了分组条形图,其工作正常。我也有一个条形图也可以。
问题是,如果我从分组条形图切换到普通条形图,则条形会变粗并放大。
但是我无法缩小或更改条形的宽度。
This is the Normal bar how it should be
如果我从分组状态切换回普通的i get this
在开关下,我是说我通过创建新的数据集来更新图表
代码如下:
func updateBarchart(which segment: Int)
{
//getSumofMonths()
let pecsColor = UIColor(red:0.278, green:0.247, blue:0.247, alpha: 1.000)
let petreColor = UIColor(red:0.941, green:0.400, blue:0.184, alpha: 1.000)
if segment == 1
{
let dataSets = [createDataSet(from: pecsBevetel, label: "Pécs", color: pecsColor),createDataSet(from: petreBevetel, label: "Újpetre", color: petreColor)]
groupedBarChart.setGroupedBarchartData(from: dataSets, xValues: monthStrings)
groupedBarChart.xAxis.granularityEnabled = true
groupedBarChart.xAxis.granularity = groupedBarChart.xAxis.axisMaximum / Double(monthStrings.count)
groupedBarChart.xAxis.axisMaximum = Double(12)
groupedBarChart.setVisibleXRangeMaximum(6)
groupedBarChart.xAxis.centerAxisLabelsEnabled = true
}
else if segment == 0
{
groupedBarChart.setBarChartData(xValues: monthStrings, yValues: pecsBevetel, label: "Pécs", colors: [pecsColor])
}
else if segment == 2
{
groupedBarChart.setBarChartData(xValues: monthStrings, yValues: petreBevetel, label: "Újpetre", colors: [petreColor])
}
//groupedBarChart.xAxis.axisMinimum = Double(-0.5)
groupedBarChart.xAxis.labelPosition = XAxis.LabelPosition.bottom
groupedBarChart.chartDescription?.text = ""
//groupedBarChart.fitBars = true
groupedBarChart.doubleTapToZoomEnabled = false
let legend = groupedBarChart.legend
legend.enabled = true
legend.horizontalAlignment = .center
legend.verticalAlignment = .bottom
legend.orientation = .horizontal
legend.drawInside = false
legend.yEntrySpace = 0.0;
let marker = BalloonMarker(color: UIColor.white, font: UIFont.systemFont(ofSize: 12), textColor: UIColor.black, insets: UIEdgeInsetsMake(8.0, 8.0, 20.0, 8.0))
marker.minimumSize = CGSize(width: 75.0, height: 35.0)
groupedBarChart.marker = marker
groupedBarChart.drawMarkers = true
}
使用这两个扩展名更新数据
func setBarChartData(xValues: [String], yValues: [Double], label: String?, colors: [UIColor]?) {
var dataEntries: [BarChartDataEntry] = []
for i in 0..<yValues.count {
let dataEntry = BarChartDataEntry(x: Double(i), y: yValues[i])
dataEntries.append(dataEntry)
}
let chartDataSet = BarChartDataSet(values: dataEntries, label: label)
if let colours = colors
{
chartDataSet.colors = colours
}
let chartData = BarChartData(dataSet: chartDataSet)
setxAxxis(with: xValues)
chartData.barWidth = Double(0.85)
self.animate(xAxisDuration: 1.0, yAxisDuration: 1.0, easingOption: .easeOutCirc)
self.data = chartData
}
func setxAxxis(with items: [String])
{
let chartFormatter = BarChartFormatter(labels: items)
let xAxis = XAxis()
xAxis.valueFormatter = chartFormatter
self.xAxis.valueFormatter = xAxis.valueFormatter
}
func setGroupedBarchartData(from entries: [BarChartDataSet], xValues: [String])
{
let groupedChartData = BarChartData(dataSets: entries)
setxAxxis(with: xValues)
let groupSpace = 0.1
let barSpace = 0.05
let barWidth = 0.4
groupedChartData.barWidth = barWidth
groupedChartData.groupBars(fromX: Double(0), groupSpace: groupSpace, barSpace: barSpace)
self.animate(xAxisDuration: 1.0, yAxisDuration: 1.0, easingOption: .easeOutCirc)
self.data = groupedChartData
}
请帮助我,因为在使用Google数小时后,我无法正常使用 我当时正在考虑将其缩小,但是没有用。或者我该如何进行干净的重绘,以便将所有内容都设置为默认值,以使条码宽度再次正常?
如果您能帮助我,谢谢您的时间! :)
答案 0 :(得分:2)
我在文档中找到了答案。很难找到。 您唯一要做的就是调用fitScreen()方法,它会恢复到原始状态。
func updateBarchart(which segment: Int)
{
//getSumofMonths()
let pecsColor = UIColor(red:0.278, green:0.247, blue:0.247, alpha: 1.000)
let petreColor = UIColor(red:0.941, green:0.400, blue:0.184, alpha: 1.000)
if segment == 1
{
let dataSets = [createDataSet(from: pecsBevetel, label: "Pécs", color: pecsColor),createDataSet(from: petreBevetel, label: "Újpetre", color: petreColor)]
groupedBarChart.setGroupedBarchartData(from: dataSets, xValues: monthStrings)
groupedBarChart.xAxis.granularityEnabled = true
groupedBarChart.xAxis.granularity = groupedBarChart.xAxis.axisMaximum / Double(monthStrings.count)
groupedBarChart.xAxis.axisMaximum = Double(12)
groupedBarChart.setVisibleXRangeMaximum(6)
//groupedBarChart.setVisibleXRangeMinimum(0)
groupedBarChart.xAxis.centerAxisLabelsEnabled = true
}
else if segment == 0
{
groupedBarChart.setBarChartData(xValues: monthStrings, yValues: pecsBevetel, label: "Pécs", colors: [pecsColor])
//groupedBarChart.setVisibleXRangeMinimum(12)
groupedBarChart.xAxis.centerAxisLabelsEnabled = false
groupedBarChart.fitScreen() //<- This method solves the problem.
}
else if segment == 2
{
groupedBarChart.setBarChartData(xValues: monthStrings, yValues: petreBevetel, label: "Újpetre", colors: [petreColor])
//groupedBarChart.setVisibleXRangeMinimum(12)
groupedBarChart.xAxis.centerAxisLabelsEnabled = false
groupedBarChart.fitScreen() //<- This method solves the problem.
}
//groupedBarChart.xAxis.axisMinimum = Double(0.5)
groupedBarChart.xAxis.labelPosition = XAxis.LabelPosition.bottom
groupedBarChart.chartDescription?.text = ""
groupedBarChart.fitBars = true
groupedBarChart.doubleTapToZoomEnabled = false
let legend = groupedBarChart.legend
legend.enabled = true
legend.horizontalAlignment = .center
legend.verticalAlignment = .bottom
legend.orientation = .horizontal
legend.drawInside = false
legend.yEntrySpace = 0.0;
let marker = BalloonMarker(color: UIColor.white, font: UIFont.systemFont(ofSize: 12), textColor: UIColor.black, insets: UIEdgeInsetsMake(8.0, 8.0, 20.0, 8.0))
marker.minimumSize = CGSize(width: 75.0, height: 35.0)
groupedBarChart.marker = marker
groupedBarChart.drawMarkers = true
groupedBarChart.moveViewToX(0)
}
因此,在设置图表数据之后,简称为此方法。
groupedBarChart.fitScreen() //<- This method solves the problem.
答案 1 :(得分:0)
我面临着同样的问题,经过数小时的研究,我最终得到了以下解决方案。
每次从组=>正常切换时,您都需要重置和取消以前的数据设置,如下所示。
重置旧数据集:
if barChartView.xAxis.isAxisMinCustom {
barChartView.xAxis.resetCustomAxisMin()
}
if barChartView.xAxis.isAxisMaxCustom {
barChartView.xAxis.resetCustomAxisMax()
}
//Remove all old Data Set from chart.
if ((barChartView.data?.dataSetCount)! > 0)
{
barChartView.data = nil
}
通知数据已更改:
如果要使用新数据更新数据,请在更新数据集后使用以下方法。
barChartView.data?.notifyDataChanged()
barChartView.notifyDataSetChanged()
这样做,您将获得适当的期望宽度。
希望这会有所帮助。