我尝试使用月份名称对y轴上的某些数据绘制活动。我希望y显示数据，如20,40,50,60，... 120，而x应该只是1月，2月，3月。这就是我想要的
这就是我得到的
Click This link here 有人知道如何解决这个问题吗？
xValues和yValues仅为NSMutables，数据为
xValues [0,5,15,20 ... 50 ... 60 ... 70 ..]
yValues [60,70,80,50,40 ......]
代码低于
#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
答案 0 :(得分：0)
将对_hostView.hostedGraph.graph的所有引用更改为_hostView.hostedGraph。 graph属性继承自CPTLayer。图形的其他部分使用它来维护指向图形的指针，但不是图形本身。