如何将图例添加到核心图散点图

Question

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

在此先感谢

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);