如何将图例添加到核心图的散点图中

Question

我在我的iphone应用程序中使用核心绘图.如何在散点图中添加图例.谁能帮我？

提前致谢

Answer 1

graph_.legend = [CPTLegend legendWithGraph:graph_];
graph_.legend.fill = [CPTFill fillWithColor:[CPTColor darkGrayColor]];
graph_.legend.cornerRadius = 5.0;
graph_.legend.swatchSize = CGSizeMake(25.0, 25.0);
graph_.legendAnchor = CPTRectAnchorBottom;
graph_.legendDisplacement = CGPointMake(0.0, 12.0);