matlab中figure如何添加一个滚动条来调整X坐标范围?具体怎么操作?答:clear;clc;f=figure;a=axes('position',[.1 .25 .8 .65],'units','normalized');ezplot(@sin);xlim([-pi,pi]);uicontrol('units','normalized','Style','slider','userdata',a,'pos',[.1 .1 .8 .05],'min',-pi,'max',pi,'callback',@(obj,event)set(get(obj,'userdata'...