同一图表中的两个x轴？

Question

如何使用核心图绘制同一图表中的两个x轴？

Answer 1

 CPXYAxis *topX = [[[CPXYAxis alloc] init] autorelease];
 CPXYAxis *bottomX = [[[CPXYAxis alloc] init] autorelease];
 CPXYAxis *y = [[[CPXYAxis alloc] init] autorelease];

 topX.coordinate = CPCoordinateX;
 bottomX.coordinate = CPCoordinateX;

 y.coordinate = CPCoordinateY;

 CPAxisSet *axisSet = [[[CPAxisSet alloc] init] autorelease];
 axisSet.axes = [NSArray arrayWithObjects:topX,bottomX,y,nil];
 graph.axisSet = axisSet;

您可能需要多个绘图空间，每个都在x轴上。CPTestApp示例创建多个y轴，这将帮助您..希望这有助于..