ios - Core Plot 以条形方式截断数据

Question

我有一个基于核心图的条形图，我的所有标签都适合，勉强但它们确实适合，但我无法获得上个月(6 月)的相应数据不分成两半。

我试过调整正确的边界，但没有任何效果，有什么想法吗？

我的格式:

    graph                               = [[CPTXYGraph alloc] initWithFrame:CGRectZero];
    [graph applyTheme:[CPTTheme themeNamed:kCPTStocksTheme]];
    self.hostedGraph                    = graph;
    graph.plotAreaFrame.masksToBorder   = NO;
    graph.paddingLeft                   = 0.0f;
    graph.paddingTop                    = 0.0f;
    graph.paddingRight                  = 0.0f;
    graph.paddingBottom                 = 0.0f;

    CPTMutableLineStyle *borderLineStyle    = [CPTMutableLineStyle lineStyle];
    borderLineStyle.lineColor               = [CPTColor whiteColor];
    borderLineStyle.lineWidth               = 2.0f;
    graph.plotAreaFrame.borderLineStyle     = borderLineStyle;
    graph.plotAreaFrame.paddingTop          = 10.0;
    graph.plotAreaFrame.paddingRight        = 20.0;
    graph.plotAreaFrame.paddingBottom       = 80.0;
    graph.plotAreaFrame.paddingLeft         = 55.0;

    //Add plot space
    CPTXYPlotSpace *plotSpace       = (CPTXYPlotSpace *)graph.defaultPlotSpace;
    //CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)graph.newPlotSpace;
    plotSpace.delegate              = self;

    //MAX Y

    int TOP = [[NSString stringWithFormat:@"%02f", highestPoint] intValue];
    plotSpace.yRange                = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromInt(0) length:CPTDecimalFromInt(TOP +5)];

    //MAX X
    plotSpace.xRange                = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromInt(-1) 
                                                                   length:CPTDecimalFromInt(numOfBars)];
#pragma mark - Grid Lines
    //Grid line styles
    CPTMutableLineStyle *majorGridLineStyle = [CPTMutableLineStyle lineStyle];
    majorGridLineStyle.lineWidth            = 0.75;
    majorGridLineStyle.lineColor            = [[CPTColor whiteColor] colorWithAlphaComponent:0.1];
    CPTMutableLineStyle *minorGridLineStyle = [CPTMutableLineStyle lineStyle];
    minorGridLineStyle.lineWidth            = 0.25;
    minorGridLineStyle.lineColor            = [[CPTColor whiteColor] colorWithAlphaComponent:0.1];

    //Axes
    CPTXYAxisSet *axisSet = (CPTXYAxisSet *)graph.axisSet;
#pragma mark - X- Axis
    //X axis
    CPTXYAxis *x                    = axisSet.xAxis;
    x.orthogonalCoordinateDecimal   = CPTDecimalFromInt(0);
    x.majorIntervalLength           = CPTDecimalFromInt(1);
    x.minorTicksPerInterval         = 0;
    x.labelingPolicy                = CPTAxisLabelingPolicyNone;
    x.majorGridLineStyle            = majorGridLineStyle;
    x.axisConstraints               = [CPTConstraints constraintWithLowerOffset:0.0];

    //X labels
    int labelLocations = 0;
    NSMutableArray *customXLabels = [NSMutableArray array];
#pragma mark - X- Axis Labels
    for (NSString *day in xAxis) {
        CPTAxisLabel *newLabel = [[CPTAxisLabel alloc] initWithText:day textStyle:x.labelTextStyle];
        newLabel.tickLocation   = [[NSNumber numberWithInt:labelLocations] decimalValue];
        newLabel.offset         = x.labelOffset + x.majorTickLength;
        newLabel.rotation       = M_PI / 4;
        [customXLabels addObject:newLabel];
        labelLocations++;

    }
    x.axisLabels                    = [NSSet setWithArray:customXLabels];
    NSLog(@"%@", xAxis);

    //Y axis
#pragma mark - Y- Axis
    CPTXYAxis *y            = axisSet.yAxis;
    //y.title                 = @"Profit";
    //y.titleOffset           = 40.0f;
    y.labelingPolicy        = CPTAxisLabelingPolicyAutomatic;
    y.majorGridLineStyle    = majorGridLineStyle;
    y.minorGridLineStyle    = minorGridLineStyle;

    //THIS WAS 0
    y.axisConstraints       = [CPTConstraints constraintWithLowerOffset:0.0];

    //Create a bar line style
    CPTMutableLineStyle *barLineStyle   = [[CPTMutableLineStyle alloc] init];
    barLineStyle.lineWidth              = 1.0;
    barLineStyle.lineColor              = [CPTColor whiteColor];
    CPTMutableTextStyle *whiteTextStyle = [CPTMutableTextStyle textStyle];
    whiteTextStyle.color                = [CPTColor whiteColor];

    //Plot
    BOOL firstPlot = YES;
    for (NSString *set in [[sets allKeys] sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)]) {
        CPTBarPlot *plot        = [CPTBarPlot tubularBarPlotWithColor:[CPTColor blueColor] horizontalBars:NO];
        plot.lineStyle          = barLineStyle;
        CGColorRef color        = ((UIColor *)[sets objectForKey:set]).CGColor;
        plot.fill               = [CPTFill fillWithColor:[CPTColor colorWithCGColor:color]];
        if (firstPlot) {
            plot.barBasesVary   = NO;
            firstPlot           = NO;
        } else {
            plot.barBasesVary   = YES;
        }
        plot.barWidth           = CPTDecimalFromFloat(0.8f);
        plot.barsAreHorizontal  = NO;
        plot.dataSource         = self;
        plot.identifier         = set;
        [graph addPlot:plot toPlotSpace:plotSpace];
    }
    }

也不太重要，但我如何去除黑角？

Answer 1

条形以 x 位置为中心，这就是为什么您只能看到最后一个条形的一半。增加 xRange 的长度以为栏的另一半腾出空间。将其增加 0.5 以使条形末端靠近绘图区域的边缘或 1.0 以与第一个条形对称。