'name','實例38');
[x,y]=meshgrid(-8:0.5:8);
r=sqrt(x.^2+y.^2)+eps;
z=sin(r)./r;
h0=mesh(x,y,z);
hlist=uicontrol(gcf,'style','listbox',...
    'string','default|spring|summer|autumn|winter',...
    'max',5,...
    'min',1,...
    'position',[20 20 80 100],...
    'callback',[...
        'k=get(hlist,''value'');,',...
        'switch k,',...
        'case 1,',...
        'colormap default,',...
        'case 2,',...
        'colormap spring,',...
        'case 3,',...
        'colormap summer,',...
        'case 4,',...
        'colormap autumn,',...
        'case 5,',...
        'colormap winter,',...
        'end']);
實例39：菜單控制的使用

h0=figure('toolbar','none',...
    'position',[200 150 450 250],...
    'name','實例39');
x=0:0.5:2*pi;
y=cos(x);
h=plot(x,y);
grid on
set(gcf,'toolbar','none')
hm=uimenu('label','example');
huidiao1=[...
        'set(hm_gridon,''checked'',''on''),',...
        'set(hm_gridoff,''checked'',''off''),',...
        'grid on'];
huidiao2=[...
        'set(hm_gridoff,''checked'',''on''),',...
        'set(hm_gridon,''checked'',''off''),',...
        'grid off'];
hm_gridon=uimenu(hm,'label','grid on',...
    'checked','on',...
    'callback',huidiao1);
hm_gridoff=uimenu(hm,'label','grid off',...
    'checked','off',...
    'callback',huidiao2);
實例40：UIMENU菜單的應用

h0=figure('toolbar','none',...
    'position',[200 150 450 250],...
    'name','實例40');
h1=uimenu(gcf,'label','函數');
h11=uimenu(h1,'label','輪廓圖',...
    'callback',[...
        'set(h31,''checked'',''on''),',...
        'set(h32,''checked'',''off''),',...
        '[x,y,z]=peaks;,',...
        'contour3(x,y,z,30)']);
h12=uimenu(h1,'label','高斯分布',...
    'callback',[...
        'set(h31,''checked'',''on''),',...
        'set(h32,''checked'',''off''),',...
        'mesh(peaks);,',...
        'axis tight']);
h13=uimenu(h1,'label','Sinc函數',...
    'callback',[...
        'set(h31,''checked'',''on''),',...
        'set(h32,''checked'',''off''),',...
        '[x,y]=meshgrid(-8:0.5:8);,',...
        'r=sqrt(x.^2+y.^2)+eps;,',...
        'z=sin(r)./r;,',...
        'mesh(x,y,z)']);
h2=uimenu(gcf,'label','色彩');
hl2(1)=uimenu(h2,'label','Default',...
    'checked','on',...
    'callback',...
    [...
        'set(hl2,''checked'',''off''),',...
        'set(hl2(1),''checked'',''on''),',...
        'colormap(''default'')']);
hl2(2)=uimenu(h2,'label','spring',...
    'callback',...
    [...
        'set(hl2,''checked'',''off''),',...
        'set(hl2(2),''checked'',''on''),',...
        'colormap(spring)']);
hl2(3)=uimenu(h2,'label','Summer',...
    'callback',...
    [...
        'set(hl2,''checked'',''off''),',...
        'set(hl2(3),''checked'',''on''),',...
        'colormap(summer)']);
hl2(4)=uimenu(h2,'label','Autumn',...
    'callback',...
    [...
        'set(hl2,''checked'',''off''),',...
        'set(hl2(4),''checked'',''on''),',...
        'colormap(autumn)']);
hl2(5)=uimenu(h2,'label','Winter',...
    'callback',...
    [...
        'set(hl2,''checked'',''off''),',...
        'set(hl2(5),''checked'',''on''),',...
        'colormap(winter)']);
h3=uimenu(gcf,'label','坐標選項');
h31=uimenu(h3,'label','Axis on',...
    'callback',...
    [...
        'axis on,',...
        'set(h31,''checked'',''on''),',...
        'set(h32,''checked'',''off'')']);
h32=uimenu(h3,'label','Axis off',...
    'callback',...
    [...
        'axis off,',...
        'set(h32,''checked'',''on''),',...
        'set(h31,''checked'',''off'')']);
實例41：除法計算器

h=figure('toolbar','none',...
    'position',[200 150 450 250],...
    'name','實例41');
h1=uicontrol(gcf,'style','edit',...
    'position',[80 200 100 20],...
    'HorizontalAlignment','right',...
    'callback',['m=get(h1,''string'');,',...
        'a=str2num(m);']);
h2=uicontrol(gcf,'style','edit',...
    'HorizontalAlignment','right',...
    'position',[80 150 100 20],...
    'callback',['n=get(h2,''string'');,',...
        'b=str2num(n);']);
h3=uicontrol(gcf,'style','text',...
    'string','被除數',...
    'position',[80 230 100 20]);
h4=uicontrol(gcf,'style','edit',...
    'position',[80 50 100 20]);
h5=uicontrol(gcf,'style','pushbutton',...
    'position',[80 100 100 20],...
    'string','=',...
    'callback',[...
        'if b==0,',...
        'h7=errordlg(''除數不能為0！'',''error'',''on'');,',...
        'else,',...
        'k=a/b;,',...
        'c=num2str(k);,',...
        'set(h4,''string'',c),',...
        'end']);
h8=uicontrol(gcf,'style','text',...
    'string','除數',...
    'position',[80 175 100 20]);
h9=uicontrol(gcf,'style','text',...
    'string','商',...
    'position',[80 75 100 20]);
實例42：單選框的使用

h0=figure('toolbar','none',...
    'position',[200 150 450 250],...
    'name','實例42');
x=0:0.5:2*pi;
y=sin(x);
plot(x,y)
grid on
set(gcf,'toolbar','none')
g=set(gca,'position',[0.2 0.2 0.6 0.6]);
huidiao1=[...
        'grid on,',...
        'set(box_on,''value'',1),',...
        'set(box_off,''value'',0),'];
huidiao2=[...
        'grid off,',...
        'set(box_off,''value'',1),',...
        'set(box_on,''value'',0),'];
box_on=uicontrol(gcf,'style','radio',...
    'position',[5 50 50 20],...
    'string','grid on',...
    'value',1,...
    'callback',huidiao1);
box_off=uicontrol(gcf,'style','radio',...
    'position',[5 20 50 20],...
    'string','grid off',...
    'value',0,...
    'callback',huidiao2);
title('無線按鈕的使用')
實例43：添加環境效果

h0=figure('toolbar','none',...
    'position',[198 56 450 468],...
    'name','實例43');
h1=axes('parent',h0,...
    'position',[0.15 0.45 0.7 0.5],...
    'visible','off');
sphere
h=findobj('type','surface');
shading interp
axis equal
l=light('position',[0 -2 1]);
k(1)=get(h,'specularstrength');
k(2)=get(h,'diffusestrength');
k(3)=get(h,'specularexponent');
k(4)=get(h,'specularcolorreflectance');
u1=uimenu('parent',h0,...
    'label','燈光效果',...
    'tag','u1',...
    'backgroundcolor',[0.75 0.75 0.75]);
u11=uimenu('parent',u1,...
    'label','gouraud',...
    'tag','u11',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'callback',[...
        'set(u11,''checked'',''on'');,',...
        'set(u12,''checked'',''off'');,',...
        'set(h,''facelighting'',''gouraud'')']);
u12=uimenu('parent',u1,...
    'label','phong',...
    'tag','u12',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'callback',[...
        'set(u11,''checked'',''off'');,',...
        'set(u12,''checked'',''on'');,',...
        'set(h,''facelighting'',''gouraud'')']);
u2=uimenu('parent',h0,...
    'label','背面燈光',...
    'tag','u2',...
    'backgroundcolor',[0.75 0.75 0.75]);
u21=uimenu('parent',u2,...
    'label','reverselit',...
    'tag','u21',...
    'checked','on',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'callback',[...
        'set(u21,''checked'',''on'');,',...
        'set(u22,''checked'',''off'');,',...
        'set(h,''backfacelighting'',''reverselit'')']);
u22=uimenu('parent',u2,...
    'label','reverselit',...
    'tag','u22',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'callback',[...
        'set(u21,''checked'',''off'');,',...
        'set(u22,''checked'',''on'');,',...
        'set(h,''backfacelighting'',''reverselit'')']);
s1=uicontrol('parent',h0,...
    'units','points',...
    'style','slider',...
    'tag','s1',...
    'min',0,...
    'max',1,...
    'value',k(1),...
    'position',[20 80 100 15],...
    'callback',[...
        's1value=get(s1,''value'');,',...
        'set(h,''specularstrength'',s1value)']);
t1=uicontrol('parent',h0,...
    'units','points',...
    'style','text',...
    'tag','t1',...
    'string','鏡面反射強度',...
    'position',[20 97 100 15]);
s2=uicontrol('parent',h0,...
    'units','points',...
    'style','slider',...
    'tag','s2',...
    'min',0,...
    'max',1,...
    'value',k(2),...
    'position',[20 30 100 15],...
    'callback',[...
        's2value=get(s2,''value'');,',...
        'set(h,''diffusestrength'',s2value)']);
t2=uicontrol('parent',h0,...
    'units','points',...
    'style','text',...
    'tag','t2',...
    'string','漫反射強度',...
    'position',[20 47 100 15]);
s3=uicontrol('parent',h0,...
    'units','points',...
    'style','slider',...
    'tag','s3',...
    'min',0.1,...
    'max',1,...
    'value',k(3)/20,...
    'position',[220 80 100 15],...
    'callback',[...
        's3value=get(s3,''value'')+eps;,',...
        'set(h,''specularexponent'',20*s3value)']);
t3=uicontrol('parent',h0,...
    'units','points',...
    'style','text',...
    'tag','t3',...
    'string','鏡面指數',...
    'position',[220 97 100 15]);
s4=uicontrol('parent',h0,...
    'units','points',...
    'style','slider',...
    'tag','s4',...
    'min',0,...
    'max',1,...
    'value',k(4),...
    'position',[220 30 100 15],...
    'callback',[...
        's4value=get(s4,''value'');,',...
        'set(h,''specularcolorreflectance'',s4value)']);
t4=uicontrol('parent',h0,...
    'units','points',...
    'style','text',...
    'tag','t1',...
    'string','鏡面顏色反射比',...
    'position',[220 47 100 15]);
b1=uicontrol('parent',h0,...
    'units','points',...
    'style','pushbutton',...
    'tag','b1',...
    'string','關閉',...
    'position',[145 45 50 30],...
    'callback','close');
實例44：改變坐標軸范圍

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','實例44');
h1=axes('parent',h0,...
    'position',[0.15 0.45 0.7 0.5],...
    'visible','on');
e1=uicontrol('parent',h0,...
    'style','edit',...
    'string',1,...
    'position',[50 120 50 20]);
t1=uicontrol('parent',h0,...
    'style','text',...
    'string','X軸最小值',...
    'position',[35 150 80 20]);
e2=uicontrol('parent',h0,...
    'style','edit',...
    'string',5,...
    'position',[50 60 50 20]);
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','X軸最大值',...
    'position',[35 90 80 20]);
e3=uicontrol('parent',h0,...
    'style','edit',...
    'string',1,...
    'position',[150 120 50 20]);
t3=uicontrol('parent',h0,...
    'style','text',...
    'string','Y軸最小值',...
    'position',[135 150 80 20]);
e4=uicontrol('parent',h0,...
    'style','edit',...
    'string',5,...
    'position',[150 60 50 20]);
t4=uicontrol('parent',h0,...
    'style','text',...
    'string','Y軸最大值',...
    'position',[135 90 80 20]);
e5=uicontrol('parent',h0,...
    'style','edit',...
    'string',20,...
    'position',[250 120 50 20]);
t5=uicontrol('parent',h0,...
    'style','text',...
    'horizontalalignment','left',...
    'string','點數',...
    'position',[250 150 30 20]);
b1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','繪圖',...
    'position',[250 60 60 40],...
    'callback',[...
        'a=str2num(get(e1,''string''));,',...
        'b=str2num(get(e2,''string''));,',...
        'c=str2num(get(e3,''string''));,',...
        'd=str2num(get(e4,''string''));,',...
        'n=str2num(get(e5,''string''));,',...
        'xgrid=linspace(-abs(a),abs(a),n);,',...
        'ygrid=linspace(-abs(b),abs(b),n);,',...
        '[x,y]=meshgrid(xgrid,ygrid);,',...
        'z=c*sqrt(d-y.*y/b/b-x.*x/a/a);,',...
        'u=1;,',...
        'z1=real(z);,',...
        'for k=2:n-1,',...
        'for j=2:n-1,',...
        'if imag(z(k,j))~=0,',...
        'z1(k,j)=0;,',...
        'end,',...
        'if all(imag(z([k-1:k+1],[j-1:j+1])))~=0,',...
        'z1(k,j)=nan;,',...
        'end,',...
        'end,',...
        'end,',...
        'surf(x,y,z1),',...
        'hold on,',...
        'if u==1,',...
        'z2=-z1;,',...
        'surf(x,y,z2),',...
        'axis([-abs(a),abs(a),-abs(b),abs(b),-abs(c),abs(c)]);,',...
        'end,',...
        'xlabel(''x'');,',...
        'ylabel(''y'');,',...
        'zlabel(''z'');,',...
        'hold off']);
b2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','關閉',...
    'position',[150 10 60 20],...
    'callback','close');
實例45：簡單運算器

h1=uicontrol(gcf,'style','radio',...
    'string','加',...
    'value',1,...
    'position',[20 150 40 20],...
    'callback',[...
        'k=1;,',...
        'set(h1,''value'',1),',...
        'set(h2,''value'',0),',...
        'set(h3,''value'',0)']);
h2=uicontrol(gcf,'style','radio',...
    'string','減',...
    'position',[20 110 40 20],...
    'callback',[...
        'k=2;,',...
        'set(h2,''value'',1),',...
        'set(h1,''value'',0),',...
        'set(h3,''value'',0)']);
h3=uicontrol(gcf,'style','radio',...
    'string','乘',...
    'position',[20 70 40 20],...
    'callback',[...
        'k=3;,',...
        'set(h3,''value'',1),',...
        'set(h2,''value'',0),',...
        'set(h1,''value'',0)']);
e1=uicontrol(gcf,'style','edit',...
    'position',[80 150 100 20]);
e2=uicontrol(gcf,'style','edit',...
    'position',[80 110 100 20]);
e3=uicontrol(gcf,'style','edit',...
    'position',[80 70 100 20]);
b1=uicontrol(gcf,'style','pushbutton',...
    'string','運算',...
    'position',[200 150 80 30],...
    'callback',[...
        'x=str2num(get(e1,''string''));,',...
        'y=str2num(get(e2,''string''));,',...
        'switch k,',...
        'case 1,',...
        'z=x+y;,',...
        'case 2,',...
        'z=x-y;,',...
        'case 3,',...
        'z=x*y;,',...
        'end,',...
        'set(e3,''string'',num2str(z))']);
b2=uicontrol(gcf,'style','pushbutton',...
    'string','退出',...
    'position',[200 100 80 30],...
    'callback','close');
實例46：曲線色彩的修改

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','my second gui');
h1=axes('parent',h0,...
    'position',[0.15 0.45 0.7 0.5],...
    'visible','on');
x=0:0.1:2*pi;
k=plot(x,sin(x));
xlabel('自變量X');
ylabel('函數值Y');
title('圖形色彩改變');
p1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'backgroundcolor','r',...
    'position',[60 100 50 30],...
    'callback','set(k,''color'',''r'')');
p2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'backgroundcolor','g',...
    'position',[170 100 50 30],...
    'callback','set(k,''color'',''g'')');
p3=uicontrol('parent',h0,...
    'style','pushbutton',...
    'backgroundcolor','b',...
    'position',[280 100 50 30],...
    'callback','set(k,''color'',''b'')');
p4=uicontrol('parent',h0,...
    'style','pushbutton',...
    'backgroundcolor',[1 1 1],...
    'fontsize',20,...
    'fontweight','demi',...
    'string','關閉',...
    'position',[150 30 80 60],...
    'callback','close');
t1=uicontrol('parent',h0,...
    'style','text',...
    'string','紅色',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[60 120 50 20]);
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','綠色',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[170 120 50 20]);
t3=uicontrol('parent',h0,...
    'style','text',...
    'string','藍色',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[280 120 50 20]);