在 HorizontalBarChart 中切割最后一个条形图

Question

我在 Charts 图形库中遇到问题。

我正在使用HorizontalBarChartView

遇到以下问题：

下面是我的图表设置代码：

- (void)setupBarChartForPinData {

    switch (_selectedLegend) {
        case kAppGraphAllLegend:
            _barPinChartHeightConstarins.constant = (self.mutArrPinList.count*2)*15;
            break;
        case kAppGraphLegend1:
            _barPinChartHeightConstarins.constant = (self.mutArrPinList.count*15);
            break;
        case kAppGraphLegend2:
            _barPinChartHeightConstarins.constant = self.mutArrPinList.count*15;
            break;

        default:
            break;
    }

    [UIView animateWithDuration:0.2
                     animations:^{
                         // Called on parent view
                         [self.view layoutIfNeeded];
                         _scrView.contentSize = CGSizeMake(_scrView.contentSize.width,_containerView.frame.size.height + 8 );
                     }];


    _barChartPins.delegate = self;
    _barChartPins.drawBarShadowEnabled = NO;
    //_barChartPins.minOffset = 0;
    _barChartPins.dragEnabled = YES;
    _barChartPins.dragDecelerationEnabled = YES;
    _barChartPins.chartDescription.enabled = NO;
    _barChartPins.drawValueAboveBarEnabled = YES;

    _barChartPins.leftAxis.axisMinimum = 0;

    ChartXAxis *xAxis = _barChartPins.xAxis;
    xAxis.labelPosition = XAxisLabelPositionBottom;
    xAxis.drawGridLinesEnabled = YES;
    xAxis.labelCount = self.mutArrPinList.count;
    xAxis.valueFormatter = self;
    xAxis.drawAxisLineEnabled = YES;
    xAxis.labelFont = kAPPCiscoSansTTNormal(10.0);
    xAxis.labelTextColor = kAppPrimaryHeading;


    ChartYAxis *leftAxis = _barChartPins.leftAxis;
    leftAxis.drawGridLinesEnabled = NO;

    _barChartPins.leftAxis.enabled = NO;
    _barChartPins.leftAxis.drawAxisLineEnabled = NO;

    _barChartPins.rightAxis.enabled = NO;
    _barChartPins.rightAxis.drawAxisLineEnabled = NO;
    _barChartPins.legend.enabled = NO;

    [self setPinGraphData];
}

设置数据：

- (void)setPinGraphData
{

    NSMutableArray *arrVals1 = [NSMutableArray new];
    NSMutableArray *arrVals2 = [NSMutableArray new];

    [self.mutArrPinList enumerateObjectsUsingBlock:^(NSDictionary *obj, NSUInteger idx, BOOL * _Nonnull stop) {

            [arrVals1 addObject:[[BarChartDataEntry alloc]
                                initWithX:idx
                                yValues:@[[NSNumber numberWithDouble:[obj[@"outstanding"] doubleValue]]]]];
            [arrVals2 addObject:[[BarChartDataEntry alloc]
                                initWithX:idx
                                yValues:@[[NSNumber numberWithDouble:[obj[@"incoming"] doubleValue]]]]];

    }];

    BarChartDataSet *set1 = nil;
    BarChartDataSet *set2 = nil;
    if (_barChartPins.data.dataSetCount > 0)
    {
        set1 = (BarChartDataSet *)_barChartPins.data.dataSets[0];
        set1.values = arrVals1;

        if (_barChartPins.data.dataSetCount > 1) {
            set2 = (BarChartDataSet *)_barChartPins.data.dataSets[1];
            set2.values = arrVals2;
        }


        [_barChartPins.data notifyDataChanged];
        [_barChartPins notifyDataSetChanged];
    }
    else
    {
        set1 = [[BarChartDataSet alloc] initWithValues:arrVals1];

        set2 = [[BarChartDataSet alloc] initWithValues:arrVals2];

        NSMutableArray *dataSets = [[NSMutableArray alloc] init];

        switch (_selectedLegend) {
            case kAppGraphAllLegend:{
                [set1 setColor:kAppLegend1GraphColor];
                [set2 setColor:kAppLegend2GraphColor];

                [dataSets addObject:set1];
                [dataSets addObject:set2];
                break;
            }
            case kAppGraphLegend1:{
                [set1 setColor:kAppLegend1GraphColor];
                [dataSets addObject:set1];
                break;
            }
            case kAppGraphLegend2:{
                [set2 setColor:kAppLegend2GraphColor];
                [dataSets addObject:set2];
                break;
            }
            default:
                break;
        }


        BarChartData *data = [[BarChartData alloc] initWithDataSets:dataSets];

        if (_selectedLegend == kAppGraphAllLegend) {

            //Setup fro GroupBars
            double groupSpace = 0.3;
            double barSpace = 0.05;
            double barWidth = 0.3;
            // (0.3 + 0.05) * 2 + 0.3 = 1.00 -> interval per "group"
            // (baSpace + barWidth) * dataSet count + groupSpace = 1.0

            int groupCount = arrVals1.count;
            int startYear = 0;

            data.barWidth = barWidth;
            _barChartPins.xAxis.axisMinimum = startYear;

            [data groupBarsFromX:0 groupSpace:groupSpace barSpace:barSpace];

            double groupWidth = [data groupWidthWithGroupSpace:groupSpace barSpace:barSpace];
            _barChartPins.xAxis.axisMaximum = startYear + groupWidth * groupCount;
            _barChartPins.xAxis.centerAxisLabelsEnabled = YES;

        }else{
            _barChartPins.xAxis.centerAxisLabelsEnabled = NO;
        }


        [data setDrawValues:YES];
        [data setValueTextColor:kAppPrimaryHeading];
        [data setValueFont:kAPPCiscoSansTTNormal(8.0f)];
        _barChartPins.data = data;
    }
}

我同时使用组柱和单个柱，在组柱中它工作正常但在单个柱中它切割最后一个柱。

任何帮助将不胜感激。

提前致谢。

Answer 1

我找到了上述问题的解决方案。

正如我所说，我正在为启用组图执行条件代码，这会产生问题，因为我正在根据组 space 和条形宽度手动更改轴的最小值和最大值。

data.barWidth = barWidth;
_barChartPins.xAxis.axisMinimum = startYear;
_barChartPins.xAxis.axisMaximum = startYear + groupWidth * groupCount;

由于上面的代码，当我删除组并选择 Normal one 时，它会采用我的自定义最大值和最小值 xAxis 值，因此我们必须像下面那样重置 xAxis 最小值和最大值。

_barChartPins.xAxis.centerAxisLabelsEnabled = NO;
if ([_barChartPins.xAxis isAxisMinCustom]) {
  [_barChartPins.xAxis resetCustomAxisMin];
}
if ([_barChartPins.xAxis isAxisMaxCustom]) {
  [_barChartPins.xAxis resetCustomAxisMax];
}
data.barWidth = 0.5f;

这将解决我的问题，即在顶部额外 space 并在底部切条。

希望这能帮助其他人解决同样的问题。

谢谢。

在 HorizontalBarChart 中切割最后一个条形图

Cutting Last Bar chart in HorizontalBarChart

charts

objective-c

ios

ios-charts

在 Horizo​​ntalBarChart 中切割最后一个条形图

Cutting Last Bar chart in HorizontalBarChart

charts

objective-c

ios

ios-charts

在 HorizontalBarChart 中切割最后一个条形图