动态设置栏中的条形图宽度

大家好有人可以帮我解决这个问题我也碰到过动态设置栏中的条形图宽度

我可以积与不平等条宽意义coreplote条形图说我的X轴间隔1个单位，我已经将条形图宽度设置为相同的1个单位。但是有一些点的x轴值在0.5单位变化，我希望条宽等于发生变化的宽度。数据正在动态变化。有没有其他解决方案可以使用，而且看起来仍然像条形图。使用栏的唯一原因是我需要填写剧情空间。

CPXYPlotSpace *plotSpace = (CPXYPlotSpace *)barChart.defaultPlotSpace; 
     plotSpace.yRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromInt(0) 
                 length:CPDecimalFromInt(rangeY)]; 
     plotSpace.xRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat(-0.5f) 
                 length:CPDecimalFromFloat(rangeX)]; 

     CPXYAxisSet *axisSet = (CPXYAxisSet *)barChart.axisSet; 
     CPXYAxis *x = axisSet.xAxis; 
     x.axisLineStyle = nil; 
     x.majorTickLineStyle = nil; 
     x.minorTickLineStyle = nil; 
     x.majorIntervalLength = CPDecimalFromString(@"1"); 
     x.orthogonalCoordinateDecimal = CPDecimalFromString(@"0"); 

     x.title = [[[tempCol colName] componentsSeparatedByString:@"*@"] objectAtIndex:0]; 
     x.titleLocation = CPDecimalFromFloat((rangeX-1)/2); 
     x.titleOffset = 25.0f; 

     // Define some custom labels for the data elements 
     x.labelRotation = 0; 
     x.labelingPolicy = CPAxisLabelingPolicyNone; 
     NSMutableArray *customTickLocations = [[NSMutableArray alloc] init]; 
     NSMutableArray *xAxisLabels = [[NSMutableArray alloc] init]; 
     for (int i = 0; i < [tempGraph.d2pArray count]; i++) { 
      tempD2P = [tempGraph.d2pArray objectAtIndex:i]; 
      [customTickLocations addObject:[NSNumber numberWithInt:i]]; 
      [xAxisLabels addObject:[tempD2P d2pName]]; 
     } 
     NSUInteger labelLocation = 0; 
     NSMutableArray *customLabels = [NSMutableArray arrayWithCapacity:[xAxisLabels count]]; 
     for (NSNumber *tickLocation in customTickLocations) { 
      CPAxisLabel *newLabel = [[CPAxisLabel alloc] 
            initWithText:[xAxisLabels objectAtIndex:labelLocation++] 
            textStyle:x.labelTextStyle]; 
      newLabel.tickLocation = [tickLocation decimalValue]; 
      newLabel.offset = 0; 
      newLabel.rotation = 0; 
      newLabel.alignment = CPAlignmentCenter;  
      [customLabels addObject:newLabel]; 
      [newLabel release]; 
      newLabel = nil; 
     } 
     [xAxisLabels release]; 
     xAxisLabels = nil; 
     [customTickLocations release]; 
     customTickLocations = nil; 
     x.axisLabels = [NSSet setWithArray:customLabels]; 

     CPXYAxis *y = axisSet.yAxis; 
     CPLineStyle *majorGridLineStyle = [CPLineStyle lineStyle]; 
     majorGridLineStyle.lineWidth = 0.75; 
     majorGridLineStyle.lineColor = [CPColor colorWithCGColor:[[UIColor grayColor] CGColor]]; 
     y.axisLineStyle = nil; 
     y.majorTickLineStyle = nil; 
     y.majorGridLineStyle = majorGridLineStyle; 
     y.minorTickLineStyle = nil; 
     y.majorIntervalLength = CPDecimalFromInt(rangeY/8); 
     y.orthogonalCoordinateDecimal = CPDecimalFromString(@"-0.5"); 
     y.title = [[[tempCol colName] componentsSeparatedByString:@"*@"] objectAtIndex:1]; 
     y.titleOffset = 30 + 5*log10(mult); 
     y.titleLocation = CPDecimalFromInt(rangeY/2); 
     NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init]; 
     [formatter setMaximumFractionDigits:0]; 
     y.labelFormatter = formatter; 
     [formatter release]; 
     formatter = nil; 
     char firstChar = 'F'; 
     CPBarPlot *barPlot; 
     // First bar plot 
     for (int i = 0; i < noOfBarCharts; i++) { 
      static CPTextStyle *whiteText = nil; 
      if (!whiteText) { 
       whiteText = [[CPTextStyle alloc] init]; 
       whiteText.color = [CPColor whiteColor]; 
       whiteText.fontSize = 14; 
      } 
      barPlot = [CPBarPlot tubularBarPlotWithColor:[CPColor colorWithComponentRed:[[[rgbArray objectAtIndex:0] objectAtIndex:i] floatValue]/255.0 
                        green:[[[rgbArray objectAtIndex:1] objectAtIndex:i] floatValue]/255.0 
                        blue:[[[rgbArray objectAtIndex:2] objectAtIndex:i] floatValue]/255.0 
                        alpha:1.0] 
              horizontalBars:NO]; 
      barPlot.baseValue = CPDecimalFromString(@"0"); 
      barPlot.dataSource = self; 
      barPlot.barOffset = ([tempGraph.graType rangeOfString:@"GROUPED"].location != NSNotFound)?(i+0.5)-(noOfBarCharts/2):0; 
      barPlot.labelOffset = 0; 
      barPlot.barWidth = 20; 
      barPlot.identifier = [NSString stringWithFormat:@"%d%c", [tempGraph.graID intValue], (firstChar - noOfBarCharts +1 + i)]; 
      barPlot.delegate = self; 




      [barChart addPlot:barPlot 
        toPlotSpace:plotSpace];

来源

2012-07-11 Kashyap

添加您的阴谋代码 – Dustin 2012-07-11 16:26:39

即时无法上传我的图应该看起来像什么图片@DustinRowland – Kashyap 2012-07-11 16:43:37

当您发生更改时，您是否尝试过设置'barWidth'等于'majorIntervalLength'？看起来你只需要监控你的数据，并且每当你的时间间隔发生变化时，就相应地改变'barWidth'。 – Dustin 2012-07-11 16:49:33

我想通了我自己的，而不是用柱状图我用步图中的散点图的伎俩：

Plot.interpolation = CPTScatterPlotInterpolationStepped;

，并充满了阴谋：

Plot.areaFill = [CPTFill fillWithColor:[CPTColor blueColor]]; 
Plot.areaBaseValue = CPTDecimalFromInteger(0);

来源

2012-07-13 20:59:50 Kashyap

你能为我提供这样的代码示例吗？我处于同样的情况。 – Bhavesh 2014-11-13 06:47:51

如果您不在条上放置边框线，可以将条宽设置为条间距的一半，然后将宽条放大一倍。

来源

2012-07-12 00:53:33

我很抱歉，但我明白你能解释一个示例代码 – Kashyap 2012-07-13 14:46:45

动态设置栏中的条形图宽度

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