如何在核心情节中只设置一条主线？答案

【问题标题】：How to set only one major line in core plot?如何在核心情节中只设置一条主线？
【发布时间】：2013-06-18 06:49:46
【问题描述】：

嗨，我正在使用核心图创建一个图形，我想更改主线和次线的线型，线型已更改，但我们在核心图中有两条主线顶部和底部线如何删除顶部主线

- (void) setupGraphAxis: (CPTXYGraph *) graph {
CPTColor *axisColor = [CPTColor colorWithComponentRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:0.75];
CPTMutableLineStyle *axisLineStyle = [CPTMutableLineStyle lineStyle];
axisLineStyle.lineWidth = 1.5f;
axisLineStyle.lineColor = axisColor;


CPTMutableLineStyle *dashLineStyle = [CPTMutableLineStyle lineStyle];
dashLineStyle.lineColor = axisColor;
dashLineStyle.lineWidth = 1.5f;
dashLineStyle.dashPattern = [NSArray arrayWithObjects:[NSDecimalNumber numberWithInt:1],[NSDecimalNumber numberWithInt:2],nil];
dashLineStyle.patternPhase = 0.0f;

CPTMutableLineStyle *fullLineStyle = [CPTMutableLineStyle lineStyle];
fullLineStyle.lineColor = axisColor;
fullLineStyle.lineWidth = 1.5f;
//fullLineStyle.dashPattern = [NSArray arrayWithObjects:[NSDecimalNumber numberWithInt:1],nil];
fullLineStyle.lineCap = 0;
fullLineStyle.patternPhase = 0.0f;

//Configure x-axis
CPTXYAxisSet *axisSet = (CPTXYAxisSet *) graph.axisSet;

CPTXYAxis *x = axisSet.xAxis;
x.axisLineStyle = nil;
x.orthogonalCoordinateDecimal = CPTDecimalFromString(@"0");
x.minorTickLineStyle = nil;
x.majorTickLineStyle = nil;
CPTAxisLabelingPolicy policy = CPTAxisLabelingPolicyAutomatic;
x.labelingPolicy = policy;
x.labelTextStyle = nil;
x.preferredNumberOfMajorTicks = 1;


CPTXYAxis *y = axisSet.yAxis;
y.axisLineStyle = nil;
y.orthogonalCoordinateDecimal = CPTDecimalFromString(@"0");
y.minorTickLineStyle = nil;
y.majorTickLineStyle = nil;
y.majorGridLineStyle = fullLineStyle;
y.minorGridLineStyle = dashLineStyle;
y.labelingPolicy = policy;
y.preferredNumberOfMajorTicks = 1;
}

【问题讨论】：

标签： iphone ios objective-c ios6 core-plot

【解决方案1】：

您可以使用轴的labelExclusionRanges 属性告诉它在创建刻度线、网格线和标签时跳过某些值。如果您在该点仍需要刻度和/或标签，您可能需要添加另一个仅绘制网格线并让原始 y 轴绘制其他所有内容的不可见 y 轴。

【讨论】：