我想在X=0~2之间取7个值,每个值对应一个Y值 ,但我想画图的时候横坐标只显示0,0.5,1,1.5四个值,请教该怎么做,谢谢大家                                                                                                                                                                                                                                    

谢谢，太好了，我刚刚改了坐标，真实很感谢！