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1、实验6实验6.图形用户界面设计一、实验目的1. 掌握图形对象属性的基本操作；2. 掌握菜单及对话框设计、建立控件对象的方法。二、实验环境1. 计算机2. matlab7.1三、实验说明1. 正确操作，认真观察；2. 实验学时：2学时；3. 学会使用help ；4. 保存整理实验结果，提交实验报告。四、实验内容1. 设计如教材P374图1所示的菜单，并在此基础上增加选项：可以改变曲线的 颜色，可以改变窗口背景颜色。2. (选做)采用图形用户界面，从键盘输入参数a、b、n的值，考察参数对极坐标曲线二acos(b nR的影响。五、实验程序及结果1. scree n=get(O, 'Scree
2、 nSize' );W=scree n( 3);H=scree n( 4);figure( 'Color' , 'w' , 'Position',0.2*H,0.2*H,0.5*W,0.3*H,.'Name'， 菜单设计实验，NumberTitle', 'off' , 'MenuBar' ，none');hplot=uime nu(gcf,'Label' ，'&Plot' );%定义 plot 菜单项uimenu(hplot,'
3、Label', 'Sine Wave', 'Call' ,.'t=-pi:pi/20:pi;'，hO=plot(t,sin(t);',.'set(hlr,''E nable","o n'');''set(hlg,"E nable"," on'');')；uime nu(hplot,'Label', 'Cosine Wave','Call''set(
4、hlb,''E nable"," on'');'3实验6't=-pi:pi/20:pi;', 'hO=plot(t,cos(t);''set(hlr,''Enable'',''on'');',.uime nu(hw,'Label','&Red','Ca ll','set(gcf,''Color'',''r'
5、');'uime nu(hw,'Label','&Gree n','Call','set(gcf,''Color'',''g'');'uime nu(hw,'Label','&Blue','Call','set(gcf,''Color'',''b'');'hl=uime nu(hc,'Label'
6、;，'&Line Color','Separator', 'on'););););hlr=uime nu(hl,'Label''set(h0,''Color'',''r'');' hlg=uime nu(hl,'Label''set(h0,''Color'',''g'');' hlb=uime nu(hl,'Label''se
7、t(hO,''Color'',''b'');''&Red' , 'Call',.,'off','Enable''&Gree n','Call',.,'Enable', 'off');,'&Blue' , 'Call',.,'Enable', 'off');'set(hlg,''E nab
8、le"," on'');''set(hlb,''E nable'',''o n'');');,'&Exit', 'Call','close(gcf)');uime nu(hplot,'Labe l'hc=uime nu(gcf,'Label'，'&Color');%定义Color菜单项hw=uime nu(hc,'Labe l'，'&am
9、p;Win dow Color');#实验6#实验62. hf=figure('menubar', 'none' , 'name','图形演示'numbertitle', 'off' );%定义图形窗口set(gcf,'un it','normalized','posi'axes( 'posi',0.05,0.15,0.55,0.7);uic on trol(gcf,'style', 'text',
10、9;unit''posi',0.63,0.85,0.1,0.1,'horizontal', 'center');uic on trol(gcf,'style', 'text','unit',0.2,0.3,0.55,0.36);%定义坐标轴,'normalized', .% 定义静态文本'string' ,'参数 a',.,'normalized',.ha=uic on trol(gcf,'style','
11、;edit','back' , 'w',.%定义编辑框'u nit','normalized','posi',0.80,0.85,0.15,0.1);hb=uic on trol(gcf,'style','edit','back' , 'w',.'u nit','normalized','posi',0.80,0.65,0.15,0.1);hn=uic on trol(gcf,'style
12、','edit','back' , 'w',.'u nit','normalized','posi',0.80,0.45,0.15,0.1);uic on trol(gcf,'style','push' , 'unit','normalized',. %定义按钮'posi',0.61,0.15,0.15,0.15,'string','绘图,'call',COMM);uic
13、on trol(gcf,'style','push' , 'unit','normalized'j 'posi',0.80,0.15,0.15,0.15,'string','关闭,'call' , 'close(gcf)');'posi' ,0.63,0.65,0.1,0.1,'horiz ontal'，ce nter'uicontrol(gcf,'style' , 'text''
14、posi' ,0.63,0.45,0.1,0.1,'horizontal', 'center''string' ,'参 数 b');,'unit' , 'normalized',.'string' ,'参 数 n' );% 绘图COMM='a=str2 num(get(ha,''stri ng'');''b=str2 num(get(hb,''stri ng'');''n=str2 num(get(h n,"str in g'');''theta=0:0.01:2*pi;''rho=a*cos(b+n*theta);''polar(theta,rho);'改变参数a,如图所示4实验6#实验6#实验65实验6改变参数b,如图所示改变参数n,如图所示#实验66