Question

我正在尝试使用核心绘图生成一个简单的折线图，但我无法获得实线。我遇到的问题是，这条线似乎默认为虚线。

我是iOS和Xcode开发的新手，请原谅我，如果这很简单的话。我附上了我的代码，任何人都可以看到我错过了什么？提前谢谢！

代码基于项目中包含的示例代码：

-(void)constructScatterPlot
{
graph = [[CPTXYGraph alloc] initWithFrame:CGRectZero];
CPTTheme *theme = [CPTTheme themeNamed:kCPTDarkGradientTheme];
[graph applyTheme:theme];

graphView.hostedGraph = graph;    

graph.plotAreaFrame.borderLineStyle = nil;
graph.paddingLeft   = 0;
graph.paddingTop    = 0;
graph.paddingRight  = 0;
graph.paddingBottom = 0;


CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)graph.defaultPlotSpace;
plotSpace.allowsUserInteraction = YES;
plotSpace.xRange                = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(1.0) length:CPTDecimalFromFloat(100.0)];
plotSpace.yRange                = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(1.0) length:CPTDecimalFromFloat(20.0)];


CPTXYAxisSet *axisSet = (CPTXYAxisSet *)graph.axisSet;

CPTXYAxis *x          = axisSet.xAxis;
x.labelFormatter = nil;
x.labelingPolicy = CPTAxisLabelingPolicyNone;
x.axisLineStyle = nil;


CPTXYAxis *y = axisSet.yAxis;
y.labelFormatter = nil;
y.labelingPolicy = CPTAxisLabelingPolicyNone;
y.axisLineStyle = nil;

CPTScatterPlot *dataSourceLinePlot = [[CPTScatterPlot alloc] init];

CPTMutableLineStyle *lineStyle = [dataSourceLinePlot.dataLineStyle mutableCopy];
lineStyle.lineWidth              = 1.f;
lineStyle.lineColor              = [CPTColor whiteColor];
dataSourceLinePlot.dataLineStyle = lineStyle;

dataSourceLinePlot.dataSource = self;

[graph addPlot:dataSourceLinePlot];
}

Answer 1

它真的是虚线，还是只是抗锯齿伪像？尝试增加线宽和/或更改线条颜色以首先排除。

核心图 - 折线图

1 个答案: