動態設置欄中的條形圖寬度

大家好有人可以幫我解決這個問題我也碰到過動態設置欄中的條形圖寬度

我可以積與不平等條寬意義coreplote條形圖說我的X軸間隔1個單位，我已經將條形圖寬度設置爲相同的1個單位。但是有一些點的x軸值在0.5單位變化，我希望條寬等於發生變化的寬度。數據正在動態變化。有沒有其他解決方案可以使用，而且看起來仍然像條形圖。使用欄的唯一原因是我需要填寫劇情空間。

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];

來源

2012-07-11 Kashyap

添加您的陰謀代碼 – Dustin 2012-07-11 16:26:39

即時無法上傳我的圖應該看起來像什麼圖片@DustinRowland – Kashyap 2012-07-11 16:43:37

當您發生更改時，您是否嘗試過設置'barWidth'等於'majorIntervalLength'？看起來你只需要監控你的數據，並且每當你的時間間隔發生變化時，就相應地改變'barWidth'。 – Dustin 2012-07-11 16:49:33

我想通了我自己的，而不是用柱狀圖我用步圖中的散點圖的伎倆：

Plot.interpolation = CPTScatterPlotInterpolationStepped;

，並充滿了陰謀：

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

來源

2012-07-13 20:59:50 Kashyap

你能爲我提供這樣的代碼示例嗎？我處於同樣的情況。 – Bhavesh 2014-11-13 06:47:51

如果您不在條上放置邊框線，可以將條寬設置爲條間距的一半，然後將寬條放大一倍。

來源

2012-07-12 00:53:33

我很抱歉，但我明白你能解釋一個示例代碼 – Kashyap 2012-07-13 14:46:45

動態設置欄中的條形圖寬度

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