Ios4 iPhone-ECGraph将我的图形绘制为Y轴上的一条直线

我将Xcode 3.2.3与iOS 4 SDK一起使用

我正在准备一个用于在图形上绘制值的小应用程序。为此，我使用了ECGraph库。我下载了示例应用程序，并对其进行了一些调整，以适合我的目的。我想让图表在X轴上以小时为单位绘制时间，在Y轴上绘制一个简单的int值

我的问题是：当我选择在ECGraph中创建一个点作为（日期，值）选项时，如果X轴上的比例，即时间单位是日期，我可以看到该图。如果我将时间单位更改为小时，则图形是Y轴上的一条直线，其中Y轴绘图是正确的，但X轴点始终是原点

我在这里添加了UIView文件中的代码。它只是一个从演示应用程序，提供了ECGraph库下载，然后为我的东西调整

DisplayView.m：

    //
    //  DisplayView.m
    //  ECGraphic
    //
    //  Created by ris on 10-4-17.
    //  Copyright 2010 __MyCompanyName__. All rights reserved.
    //

    #import "DisplayView.h"
    #import "ECCommon.h"
    #import "ECGraphPoint.h"
    #import "ECGraphLine.h"
    #import "ECGraphItem.h"

    @implementation DisplayView


    - (id)initWithFrame:(CGRect)frame {
        if ((self = [super initWithFrame:frame])) {
            // Initialization code
        }
        return self;
    }


    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    - (void)drawRect:(CGRect)rect {

        // Drawing code
        CGContextRef _context = UIGraphicsGetCurrentContext();
        ECGraph *graph = [[ECGraph alloc] initWithFrame:CGRectMake(10, 50, 300, 350) withContext:_context isPortrait:YES];

        ECGraphPoint *point7 = [[ECGraphPoint alloc] init];
        point7.yValue = 7;
        point7.xDateValue = [ECCommon dOfS:@"08" withFormat:kDEFAULT_HOUR_FORMAT];

        ECGraphPoint *point8 = [[ECGraphPoint alloc] init];
        point8.yValue = 13;
        point8.xDateValue = [ECCommon dOfS:@"09" withFormat:kDEFAULT_HOUR_FORMAT];

        ECGraphPoint *point9 = [[ECGraphPoint alloc] init];
        point9.yValue = 1;
        point9.xDateValue = [ECCommon dOfS:@"10" withFormat:kDEFAULT_HOUR_FORMAT];

        ECGraphPoint *point10 = [[ECGraphPoint alloc] init];
        point10.yValue = 3;
        point10.xDateValue = [ECCommon dOfS:@"11" withFormat:kDEFAULT_HOUR_FORMAT];


        //NSArray *pts3 = [[NSArray alloc] initWithObjects:point7,point8,point9, point10, nil];
        NSArray *pts3 = [[NSArray alloc] initWithObjects:point7,point8, nil];
        ECGraphLine *line3 = [[ECGraphLine alloc] init];
        line3.isXDate = YES;
        line3.points = pts3;



        NSArray *lines = [[NSArray alloc] initWithObjects:line3,nil];
        [graph setXaxisTitle:@"Hours"];
        [graph setYaxisTitle:@"Energy consumed in Watts"];
        [graph setGraphicTitle:@"Weekly consumption of your device"];
        [graph setXaxisDateFormat:kDEFAULT_HOUR_FORMAT];
        [graph setDelegate:self];
        [graph setBackgroundColor:[UIColor colorWithRed:220/255.0 green:220/255.0 blue:220/255.0 alpha:1]];
        [graph setPointType:ECGraphPointTypeCircle];
        [graph drawCurveWithLines:lines lineWidth:2 color:[UIColor blackColor]];


    }


    - (void)dealloc {
        [super dealloc];
    }


    @end

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你找到解决办法了吗？你找到解决办法了吗？