0

我尝试使用月份名称针对 y 轴上的一些数据来绘制活动。我希望 y 显示诸如 20、40、50、60、...120 之类的数据，而 x 应该只是 Jan、Feb、Mar。这就是我想要的

点击这里链接

这就是我得到的

单击此处的此链接 有人知道如何解决此问题吗？

xValues 和 yValues 仅NSMutables包含 xValues [0, 5, 15, 20...50...60...70..] yValues [60, 70, 80, 50, 40..] 的数据

代码如下

#import <Foundation/Foundation.h>

  @interface GraphManager_ : NSObject<CPTPlotDataSource>
  @property (strong, nonatomic)CPTGraphHostingView *hostView;
  @property (strong, nonatomic)UIView *plotContainerView;
  @property (strong, nonatomic)NSMutableArray *xValue;
  @property (strong, nonatomic)NSMutableArray *yValue;
  @property (strong, nonatomic)NSString *plotTitle;


-(id) initScatterPlot:(UIView *)plotContainerView plotTitle:(NSString *)plotTitle xValue:(NSMutableArray *)xValues yValues:(NSMutableArray *) yValues;

-(void)configureGraph;
-(void)configureXAxis;
-(void)configureYAxis;
-(void)configurePlot;
-(void)drawScatterPlot;

@end


#import "GraphManager_.h"

@implementation GraphManager_

 @synthesize plotContainerView = _plotContainerView;
 @synthesize plotTitle = _plotTitle;
 @synthesize hostView = _hostView;
 @synthesize xValue = _xValues;
 @synthesize yValue = _yValues;


-(id)initScatterPlot:(UIView *)plotContainerView plotTitle:(NSString *)plotTitle xValue:  (NSMutableArray *)xValues yValues:(NSMutableArray *)yValues{

    self = [super init];
    if(self){
        self.plotContainerView = plotContainerView;
        self.plotTitle = plotTitle;
        self.xValue = xValues;
        self.yValue = yValues;
     }
    return self;

  }



 -(void)configureGraph{


    CGRect plotContainerViewBound = _plotContainerView.bounds;
plotContainerViewBound = CGRectMake(_plotContainerView.frame.origin.x, _plotContainerView.frame.origin.y, 1025, 560);

    _hostView = [[CPTGraphHostingView alloc] initWithFrame:plotContainerViewBound];
    _hostView.backgroundColor = [UIColor blackColor];
    [_plotContainerView addSubview:_hostView];

    CPTGraph *graph = [[CPTXYGraph alloc] initWithFrame:_hostView.bounds];
    [graph applyTheme:[CPTTheme themeNamed:kCPTPlainBlackTheme]];
    _hostView.hostedGraph = graph;

    //tweaking the graph
    graph.paddingTop    = 30.0f;
    graph.paddingBottom = 30.0f;
    graph.paddingLeft   = 30.0f;
    graph.paddingRight  = 30.0f;

    graph.titleTextStyle = [self textStyle];
    graph.title = _plotTitle;

    graph.titlePlotAreaFrameAnchor = CPTRectAnchorTop;
    graph.titleDisplacement = CGPointMake(0.0f, 4.0f);

    graph.plotAreaFrame.paddingTop    = 20.0f;
    graph.plotAreaFrame.paddingBottom = 40.0f;
    graph.plotAreaFrame.paddingLeft   = 40.0f;
    graph.plotAreaFrame.paddingRight  = 40.0f;

    graph.plotAreaFrame.borderColor = nil;

    graph.plotAreaFrame.plotArea.fill = [[CPTFill alloc] initWithColor:[CPTColor colorWithComponentRed:23.0f/255.0f green:38.0f/255.0f blue:57.0f/255.0f alpha:1.0]];

}

-(void)configureYAxis{

     NSNumberFormatter *yAxisLabelFormatter = [[NSNumberFormatter alloc] init];
     [yAxisLabelFormatter setNumberStyle:NSNumberFormatterNoStyle];

    //configuring the x and y axis
    CPTXYAxisSet *axisSet = (CPTXYAxisSet *)_hostView.hostedGraph.graph.axisSet;
    CPTXYAxis *y = axisSet.yAxis;
    y.axisConstraints = [CPTConstraints constraintWithLowerOffset:0.0f];
    y.majorIntervalLength = [[NSNumber numberWithInt:20] decimalValue];
    y.labelFormatter = yAxisLabelFormatter;
    y.majorGridLineStyle = [self xyGridLineStyle];
    y.axisLineStyle = [self xyGridLineStyle];
    y.tickDirection = CPTSignNegative;
    y.majorTickLength = 0.0f;
    y.minorTickLength = 0.0f;
 }

-(void)configureXAxis{
   CPTXYAxisSet *axisSet = (CPTXYAxisSet *)_hostView.hostedGraph.axisSet;
   CPTXYAxis *x = axisSet.xAxis;
   x.axisConstraints = [CPTConstraints constraintWithLowerOffset:0.0f];
   x.majorIntervalLength = [[NSNumber numberWithInt:1] decimalValue];//to be taken outside
   //x.labelFormatter = yAxisLabelFormatter;
   x.majorGridLineStyle = [self xyGridLineStyle];
   x.axisLineStyle = [self xyGridLineStyle];
   x.tickDirection = CPTSignNegative;
   x.majorTickLength = 0.0f;
   x.minorTickLength = 0.0f;
   x.majorTickLocations = [self majorXTickLocations];
   x.axisLabels = [self smallMonthLabels];
   x.labelingPolicy = CPTAxisLabelingPolicyNone;
}

-(void)configurePlot{

  CPTScatterPlot *plot = [[CPTScatterPlot alloc] initWithFrame:CGRectZero];
  plot.dataSource = self;

  CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)_hostView.hostedGraph.graph.defaultPlotSpace;
  [plotSpace scaleToFitPlots:[NSArray arrayWithObjects:plot,nil]];
  plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0) length:CPTDecimalFromFloat(120.0)];
  plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0) length:CPTDecimalFromFloat(50.0)];

  CPTMutableLineStyle *plotLineStyle = [plot.dataLineStyle mutableCopy];
  plotLineStyle.lineColor = [CPTColor colorWithComponentRed:63.0f/255.0f green:241.0f/255.0f blue:124.0f/255.0f alpha:1.0];
  plotLineStyle.lineWidth = 5.0f;
  plot.dataLineStyle = plotLineStyle;

  CPTPlotSymbol *plotSymbol = [CPTPlotSymbol ellipsePlotSymbol];
  plotSymbol.fill = [CPTFill fillWithColor:[CPTColor colorWithComponentRed:51.0f/255.0f green:153.0f/255.0f blue:51.0f/255.0f alpha:1.0]];
  plotSymbol.size = CGSizeMake(5.0f, 5.0f);
  plotSymbol.lineStyle = plotLineStyle;
  plot.plotSymbol = plotSymbol;
  [_hostView.hostedGraph.graph addPlot:plot toPlotSpace:_hostView.hostedGraph.graph.defaultPlotSpace];

}

-(void)drawScatterPlot{


  [self configureGraph];

  [self configureYAxis];

  [self configureXAxis];

  [self configurePlot];
}

-(NSSet *)customAxisLabels:(NSArray *)customLabelSet{

  CPTMutableTextStyle *textStyle = [[CPTMutableTextStyle alloc] init];
  textStyle.color = [CPTColor whiteColor];
  textStyle.fontName = @"Helvetica-Bold";
  textStyle.fontSize = 18.0f;

  NSMutableArray *customTickLocations = [[NSMutableArray alloc] initWithCapacity:_xValues.count];

  for(int i=0; i < _xValues.count; i++){
     [customTickLocations addObject:[_xValues objectAtIndex:i]];
  }

  NSMutableSet *customLabel = [[NSMutableSet alloc] initWithCapacity:customTickLocations.count];


  for(int i = 0; i<[customTickLocations count] -1; i++){
      NSNumber *tickLocation = [customTickLocations objectAtIndex:i];

      CPTAxisLabel *newLabel = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%@", [customLabelSet objectAtIndex:i]] textStyle:textStyle];
      newLabel.tickLocation = [tickLocation decimalValue];
      [customLabel addObject:newLabel];
  }

  return customLabel;
}

-(CPTMutableTextStyle *)textStyle{
   //text styles
   CPTMutableTextStyle *textStyle = [[CPTMutableTextStyle alloc] init];
   textStyle.color = [CPTColor whiteColor];
   textStyle.fontName = @"Helvetica-Bold";
   textStyle.fontSize = 18.0f;

   return textStyle;
}

-(CPTMutableLineStyle *)xyGridLineStyle{

//xy grid line style
  CPTMutableLineStyle *xyGridLineStyle = [CPTMutableLineStyle lineStyle];
  xyGridLineStyle.lineColor = [CPTColor colorWithComponentRed:25.0f/255.0f green:60.0f/255.0f blue:94.0f/255.0f alpha:1.0];
  xyGridLineStyle.lineWidth = 0.50f;
  return xyGridLineStyle;
}

-(NSSet *) majorXTickLocations{
    return [[NSSet alloc] initWithArray:_xValues];
}

-(NSSet *)majorYTickLocations{
    return [[NSSet alloc] initWithArray:_yValues];
}

-(NSSet *)smallMonthLabels{
    NSArray *shortenedMonthNames = [NSArray arrayWithObjects:@"Jan", @"Feb", @"Mar", @"Apr", @"May", @"Jun", @"Jul", @"Aug", @"Sep",@"Oct", @"Nov", @"Dec", nil];

    return [self customAxisLabels:shortenedMonthNames];

}

-(NSSet *)amPmTimeLabels{
        NSArray *ampmSet = [NSArray arrayWithObjects:@"12am",@"1", @"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",@"11", @"Noon",@"1",@"2", @"3", @"4", @"5",@"6", @"7", @"8", @"9",@"10", @"11pm", nil];
        return [self customAxisLabels:ampmSet];
}

-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot{
      return [self.xValue count];
}

-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)idx{
      if(fieldEnum == CPTScatterPlotFieldX){
         return [self.xValue objectAtIndex:idx];
      }else{
         return [self.yValue objectAtIndex:idx];
   }

}
@end


#import <UIKit/UIKit.h>
#import "GraphManager_.h"
#import "GraphDataManager.h"

@interface testVC_ : UIViewController

@property (strong, nonatomic) IBOutlet UIView *dailyRateGraphView;
@property (strong, nonatomic) GraphManager_ *graphManager;
@property (strong, nonatomic) GraphDataManager *graphDataManager;

@end


#import "testVC_.h"

@interface testVC_ ()

@end

@implementation testVC_



- (void)viewDidLoad
{
     [super viewDidLoad];
 // Do any additional setup after loading the view.
     self.graphDataManager = [GraphDataManager sharedInstance];
     [self.graphDataManager getDailyHeartRateData];

      self.graphManager = [[GraphManager_ alloc] initScatterPlot:self.dailyRateGraphView
                                                plotTitle:@"Sample Data"
                                                          xValue:self.graphDataManager.xAxisLabelValues
                                                  yValues:self.graphDataManager.yAxisLabelValues];
      [self.graphManager drawScatterPlot];
    }

    - (void)didReceiveMemoryWarning
    {
       [super didReceiveMemoryWarning];
       // Dispose of any resources that can be recreated.
    }

@end
4

1 回答 1

0

_hostView.hostedGraph.graph更改对的任何引用_hostView.hostedGraph。该graph属性继承自CPTLayer。图的其他部分使用它来维护指向图的指针，但图本身不使用它。

于 2013-06-30T12:12:47.237 回答