#import "ViewController.h"@interface ViewController ()
//要绘制基于x,y轴的图形
@property(nonatomic,retain)CPTXYGraph *graph;
@property(nonatomic,retain)NSMutableArray *dataForPlot;
//要绘制的view 必须为CPTGraphicView
@property(nonatomic,assign)CPTGraphHostingView *hostview;
@end@implementation ViewController- (void)viewDidLoad
{[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.
    [self LoadInit];[self SetUpCoreplotViews];
}-(void)LoadInit{self.hostview=[[[CPTGraphHostingView alloc] initWithFrame:CGRectMake(0, 0, 300, 200)] autorelease];self.dataForPlot=[NSMutableArray array];[self.view addSubview:_hostview];}-(void)SetUpCoreplotViews{//1:创建线性CPTMutableLineStyle *lineStyle=[CPTMutableLineStyle lineStyle];//基于x,y轴图形的画布self.graph=[[[CPTXYGraph alloc] initWithFrame:CGRectZero] autorelease];//设置主题CPTTheme *them=[CPTTheme themeNamed:kCPTStocksTheme];//把主题设置到画布上
    [self.graph applyTheme:them];//设置画布距离view的边距self.graph.paddingLeft=10.0f;self.graph.paddingTop=10.0f;self.graph.paddingRight=10.0f;self.graph.paddingBottom=10.0f;//然后把画布设置到指定view上self.hostview.hostedGraph=_graph;//设置画布在屏幕类可显示的x,y刻度CPTXYPlotSpace *plotSpace=(CPTXYPlotSpace *)_graph.defaultPlotSpace;//可以移动plotSpace.allowsUserInteraction=YES;plotSpace.xRange=[CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(1.0) length:CPTDecimalFromCGFloat(2.0)];plotSpace.yRange=[CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(1.0) length:CPTDecimalFromCGFloat(3.0)];//axes 设置x,y轴属性，如原点。//得到x，y轴的集合CPTXYAxisSet *axisSet=(CPTXYAxisSet *)self.graph.axisSet;lineStyle.miterLimit=1.0f;lineStyle.lineWidth=2.0f;lineStyle.lineColor=[CPTColor whiteColor];CPTXYAxis *x=axisSet.xAxis;x.orthogonalCoordinateDecimal=CPTDecimalFromString(@"3");//原点为3.(y=3）x.majorIntervalLength=CPTDecimalFromString(@"0.5");//主刻度之间检举x.minorTicksPerInterval=5;//主刻度中显示的细分刻度的数目x.minorTickLineStyle=lineStyle;//需要排除的不显示数字的主刻度
    NSArray *exclusionRange=[NSArray arrayWithObjects:[self CPTPlotRangeFromFloat:0.99 length:0.02],[self CPTPlotRangeFromFloat:2.99 length:0.02],nil];x.labelExclusionRanges=exclusionRange;//设置y 轴CPTXYAxis *y=axisSet.yAxis;y.orthogonalCoordinateDecimal=CPTDecimalFromString(@"3");y.majorIntervalLength=CPTDecimalFromString(@"0.5");y.minorTicksPerInterval=5;y.minorTickLineStyle=lineStyle;NSArray *yexclusionRange=[NSArray arrayWithObjects:[self CPTPlotRangeFromFloat:0.99 length:0.22],[self CPTPlotRangeFromFloat:2.99 length:0.22],nil];y.labelExclusionRanges=yexclusionRange;}-(CPTPlotRange *)CPTPlotRangeFromFloat:(float)location length:(float)length
{return [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(location) length:CPTDecimalFromFloat(length)];
}- (void)dealloc
{[_graph release];[_dataForPlot release];[super dealloc];
}

//
//  ViewController.m
//  corePlot
//
//  Created by ganchaobo on 13-7-31.
//  Copyright (c) 2013年 ganchaobo. All rights reserved.
//

#import "ViewController.h"@interface ViewController ()
//要绘制基于x,y轴的图形
@property(nonatomic,retain)CPTXYGraph *graph;
@property(nonatomic,retain)NSMutableArray *dataForPlot;
//要绘制的view 必须为CPTGraphicView
@property(nonatomic,assign)CPTGraphHostingView *hostview;
@end@implementation ViewController- (void)viewDidLoad
{[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.
    [self LoadInit];[self SetUpCoreplotViews];
}-(void)LoadInit{self.hostview=[[[CPTGraphHostingView alloc] initWithFrame:CGRectMake(0, 0, 300, 200)] autorelease];self.dataForPlot=[NSMutableArray array];[self.view addSubview:_hostview];//_dataForPlot = [NSMutableArray arrayWithCapacity:100];
    NSUInteger i;for ( i = 0; i < 100; i++ ) {id x = [NSNumber numberWithFloat:0 + i * 0.05];id y = [NSNumber numberWithFloat:1.2 * rand() / (float)RAND_MAX + 1.2];[_dataForPlot addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:x, @"x", y, @"y", nil]];}}-(void)SetUpCoreplotViews{//1:创建线性CPTMutableLineStyle *lineStyle=[CPTMutableLineStyle lineStyle];//基于x,y轴图形的画布self.graph=[[[CPTXYGraph alloc] initWithFrame:CGRectZero] autorelease];//设置主题CPTTheme *them=[CPTTheme themeNamed:kCPTStocksTheme];//把主题设置到画布上
    [self.graph applyTheme:them];//设置画布距离view的边距self.graph.paddingLeft=10.0f;self.graph.paddingTop=10.0f;self.graph.paddingRight=10.0f;self.graph.paddingBottom=10.0f;//然后把画布设置到指定view上self.hostview.hostedGraph=_graph;//设置画布在屏幕类可显示的x,y刻度CPTXYPlotSpace *plotSpace=(CPTXYPlotSpace *)_graph.defaultPlotSpace;//可以移动plotSpace.allowsUserInteraction=YES;plotSpace.xRange=[CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(1.0) length:CPTDecimalFromCGFloat(2.0)];plotSpace.yRange=[CPTPlotRange plotRangeWithLocation:CPTDecimalFromCGFloat(1.0) length:CPTDecimalFromCGFloat(3.0)];//axes 设置x,y轴属性，如原点。//得到x，y轴的集合CPTXYAxisSet *axisSet=(CPTXYAxisSet *)self.graph.axisSet;lineStyle.miterLimit=1.0f;lineStyle.lineWidth=2.0f;lineStyle.lineColor=[CPTColor whiteColor];CPTXYAxis *x=axisSet.xAxis;x.orthogonalCoordinateDecimal=CPTDecimalFromString(@"3");//原点为3.(y=3）x.majorIntervalLength=CPTDecimalFromString(@"0.5");//主刻度之间检举x.minorTicksPerInterval=5;//主刻度中显示的细分刻度的数目x.minorTickLineStyle=lineStyle;//需要排除的不显示数字的主刻度
    NSArray *exclusionRange=[NSArray arrayWithObjects:[self CPTPlotRangeFromFloat:0.99 length:0.02],[self CPTPlotRangeFromFloat:2.99 length:0.02],nil];x.labelExclusionRanges=exclusionRange;//设置y 轴CPTXYAxis *y=axisSet.yAxis;y.orthogonalCoordinateDecimal=CPTDecimalFromString(@"3");y.majorIntervalLength=CPTDecimalFromString(@"0.5");y.minorTicksPerInterval=5;y.minorTickLineStyle=lineStyle;NSArray *yexclusionRange=[NSArray arrayWithObjects:[self CPTPlotRangeFromFloat:0.99 length:0.22],[self CPTPlotRangeFromFloat:2.99 length:0.22],nil];y.labelExclusionRanges=yexclusionRange;//画折线lineStyle.miterLimit=1.0f;lineStyle.lineWidth=3.0f;lineStyle.lineColor=[CPTColor blueColor];//折线的对象CPTScatterPlot *boundlinePlot=[[CPTScatterPlot alloc] init];boundlinePlot.dataLineStyle=lineStyle;boundlinePlot.identifier=@"blue";boundlinePlot.dataSource=self;[_graph addPlot:boundlinePlot];}-(CPTPlotRange *)CPTPlotRangeFromFloat:(float)location length:(float)length
{return [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(location) length:CPTDecimalFromFloat(length)];
}#pragma mark -plot delegate
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot{return self.dataForPlot.count;
}-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index
{NSString * key = (fieldEnum == CPTScatterPlotFieldX ? @"x" : @"y");NSNumber * num = [[_dataForPlot objectAtIndex:index] valueForKey:key];NSLog(@"%zi-->%@",[num intValue],key);return num;
}- (void)dealloc
{[_graph release];[_dataForPlot release];[super dealloc];
}
@end