CorePlot餅圖：如何隱藏X和Y軸？

Question

下面的代碼餅圖CorePlot在IOS：

CPTGraphHostingView *hostingView = [[CPTGraphHostingView alloc] initWithFrame:self.view.bounds]; 
    [self.view addSubview:hostingView]; 

    graph = [[CPTXYGraph alloc] initWithFrame:self.view.bounds]; 
    hostingView.hostedGraph = graph; 

    CPTPieChart *pieChart = [[CPTPieChart alloc] init]; 
    pieChart.dataSource = self; 
    pieChart.pieRadius = 100.0; 
    pieChart.identifier = @"PieChart1"; 
    pieChart.startAngle = M_PI_4; 
    pieChart.sliceDirection = CPTPieDirectionCounterClockwise; 
    self.pieData= [NSMutableArray arrayWithObjects:[NSNumber numberWithDouble:90.0], 
        [NSNumber numberWithDouble:20.0], 
        [NSNumber numberWithDouble:30.0], 
        [NSNumber numberWithDouble:40.0], 
        [NSNumber numberWithDouble:50.0], [NSNumber numberWithDouble:60.0], nil]; 
    [graph addPlot:pieChart]; 
    [pieChart release]; 

即輸出不能掩蓋在餅圖x和y軸....！ 我需要隱藏X和Y軸......！ 幫我....！

Answer 1

完成此操作的最佳方法是完全移除軸。

graph.axisSet = nil;