'style','pushbutton',...
    'position',[19.5 100 60 20],...
    'string','關(guān)閉',...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'tag','b2',...
    'callback','close');
實(shí)例58：可控制小球運(yùn)動(dòng)速度的用戶界面

h0=figure('toolbar','none',...
    'position',[198 56 350 468],...
    'name','實(shí)例58');
h1=axes('parent',h0,...
    'position',[0.25 0.45 0.5 0.5],...
    'visible','off');
t=0:0.1:4*pi;
x=sin(t);
y=cos(t);
plot(x,y)
axis equal
axis off
h=line('color',[1 0 0],...
    'linestyle','.',...
    'xdata',0,...
    'ydata',1,...
    'markersize',20,...
    'erasemode','xor');
n=length(t);
i=1;
speed=0.01;
k=0;
b1huidiao=[...
        'k=0;,',...
        'while 1,',...
        'set(h,''xdata'',x(i),''ydata'',y(i));,',...
        'drawnow,',...
        'pause(speed),',...
        'i=i+1;,',...
        'if i>n,',...
        'i=1;,',...
        'end,',...
        'if k==1,',...
        'break,',...
        'end,',...
        'end'];
b1=uicontrol('parent',h0,...
    'units','points',...
    'tag','b1',...
    'style','pushbutton',...
    'string','開始',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'position',[30 80 50 20],...
    'callback',b1huidiao);
b2=uicontrol('parent',h0,...
    'units','points',...
    'tag','b2',...
    'style','pushbutton',...
    'string','停止',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'position',[100 80 50 20],...
    'callback','k=1;');
b3=uicontrol('parent',h0,...
    'units','points',...
    'tag','b3',...
    'style','pushbutton',...
    'string','關(guān)閉',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'position',[170 80 50 20],...
    'callback',[...
        'k=1;,',...
        'close']);
s1=uicontrol('parent',h0,...
    'units','points',...
    'tag','s1',...
    'style','slider',...
    'value',50*speed,...
    'max',1,...
    'min',0,...
    'backgroundcolor',[0.75 0.75 0.75],...
    'position',[30 115 190 20],...
    'callback',[...
        'm=get(s1,''value'');,',...
        'speed=m/50;']);
t1=uicontrol('parent',h0,...
    'units','points',...
    'tag','t1',...
    'style','text',...
    'fontsize',15,...
    'string','小球運(yùn)動(dòng)速度',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'position',[30 135 190 20]); 
實(shí)例59：設(shè)置坐標(biāo)軸縱橫軸比

h0=figure('name','實(shí)例59');
h1=axes('parent',h0,...
    'position',[0.3 0.45 0.5 0.5],...
    'visible','off');
u1=uimenu('parent',h0,...
    'label','繪圖',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'tag','u1',...
    'callback',[...
        '[x,y]=meshgrid(-8:0.5:8);,',...
        'r=sqrt(x.^2+y.^2)+eps;,',...
        'z=sin(r)./r;,',...
        'mesh(x,y,z),',...
        'shading interp,',...
        'axis normal']);
f1=uicontrol('parent',h0,...
    'units','points',...
    'listboxtop',0,...
    'position',[12 6 100 150],...
    'style','frame',...
    'tag','f1');
t1=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[19.5 130 72.75 16.5],...
    'string','坐標(biāo)縱橫比',...
    'style','text',...
    'tag','t1');
r1=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[19.5 110 72.75 16.5],...
    'string','axis equal',...
    'style','radiobutton',...
    'tag','r1',...
    'value',1,...
    'callback',[...
        'set(r1,''value'',1);,',...
        'set(r2,''value'',0);,',...
        'set(r3,''value'',0);,',...
        'set(r4,''value'',0);,',...
        'set(r5,''value'',0);,',...
        'axis equal']);
r2=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[19.5 85 72.75 16.5],...
    'string','axis square',...
    'style','radiobutton',...
    'tag','r2',...
    'value',0,...
    'callback',[...
        'set(r2,''value'',1);,',...
        'set(r1,''value'',0);,',...
        'set(r3,''value'',0);,',...
        'set(r4,''value'',0);,',...
        'set(r5,''value'',0);,',...
        'axis square']);
r3=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[19.5 60 72.75 16.5],...
    'string','axis image',...
    'style','radiobutton',...
    'tag','r3',...
    'value',0,...
    'callback',[...
        'set(r3,''value'',1);,',...
        'set(r2,''value'',0);,',...
        'set(r1,''value'',0);,',...
        'set(r4,''value'',0);,',...
        'set(r5,''value'',0);,',...
        'axis image']);
r4=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[19.5 35 72.75 16.5],...
    'string','axie vis3d',...
    'style','radiobutton',...
    'tag','r4',...
    'value',0,...
    'callback',[...
        'set(r4,''value'',1);,',...
        'set(r2,''value'',0);,',...
        'set(r3,''value'',0);,',...
        'set(r1,''value'',0);,',...
        'set(r5,''value'',0);,',...
        'axis vis3d']);
r5=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[19.5 10 72.75 16.5],...
    'string','axis auto',...
    'style','radiobutton',...
    'tag','r5',...
    'value',0,...
    'callback',[...
        'set(r5,''value'',1);,',...
        'set(r2,''value'',0);,',...
        'set(r3,''value'',0);,',...
        'set(r4,''value'',0);,',...
        'set(r1,''value'',0);,',...
        'axis auto']);
b1=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[12 243 72.75 30.75],...
    'string','關(guān)閉',...
    'tag','b1',...
    'callback','close');
b2=uicontrol('parent',h0,...
    'units','points',...
    'backgroundcolor',[0.753 0.753 0.753],...
    'listboxtop',0,...
    'position',[216.75 67.5 83.25 18.75],...
    'string','Colorbar',...
    'tag','b2',...
    'callback','colorbar');
實(shí)例60：動(dòng)態(tài)文本顯示

h0=figure('toolbar','none',...
    'position',[198 56 350 468],...
    'name','實(shí)例60');
h1=axes('parent',h0,...
    'position',[0.25 0.45 0.5 0.5],...
    'visible','off');
str1='當(dāng)前阻尼比＝';
z=0.52;
t=0:0.1:10;
y=step(1,[1 2*z 1],t);
hline=plot(t,y);
grid on
r1=uicontrol('parent',h0,...
    'units','points',...
    'tag','r1',...
    'style','radio',...
    'string','grid on',...
    'position',[30 120 60 20],...
    'backgroundcolor',[0.75 0.75 0.75],...
    'value',1,...
    'callback',[...
        'grid on,',...
        'set(r1,''value'',1);,',...
        'set(r2,''value'',0)']);
r2=uicontrol('parent',h0,...
    'units','points',...
    'tag','r2',...
    'style','radio',...
    'string','grid on',...
    'position',[30 95 60 20],...
     'backgroundcolor',[0.75 0.75 0.75],...
    'value',0,...
    'callback',[...
        'grid off,',...
        'set(r2,''value'',1);,',...
        'set(r1,''value'',0)']);
s1=uicontrol('parent',h0,...
    'units','points',...
    'tag','s1',...
    'style','slider',...
    'value',z,...
    'position',[100 95 150 20],...
     'backgroundcolor',[0.75 0.75 0.75],...
    'max',1,...
    'min',0,...
    'callback',[...
        'z=get(s1,''value'');,',...
        'set(t1,''string'',[str1,sprintf(''%1.4g\'',z)]);,',...
        'delete(hline),',...
        'y=step(1,[1 2*z 1],t);,',...
        'hline=plot(t,y);,',...
        'if get(r1,''value'')==1,',...
        'grid on,',...
        'end,',...
        'if get(r2,''value'')==1,',...
        'grid off,',...
        'end']);
t1=uicontrol('parent',h0,...
    'units','points',...
    'tag','t1',...
    'style','text',...
    'string',[str1,sprintf('%1.4g\',z)],...
    'position',[100 120 150 20],...
    'backgroundcolor',[0.75 0.75 0.75]);
b1=uicontrol('parent',h0,...
    'units','points',...
    'tag','b1',...
    'style','pushbutton',...
    'string','關(guān)閉',...
    'position',[80 50 80 30],...
    'backgroundcolor',[0.75 0.75 0.75],...
    'fontsize',15,...
    'callback','close');
實(shí)例61：瀏覽流體數(shù)據(jù)

h0=figure('toolbar','none',...
    'position',[198 56 450 468],...
    'name','實(shí)例61');
h1=axes('parent',h0,...
    'position',[0.3 0.45 0.5 0.5],...
    'visible','off');
[x,y,z,v]=flow;
xmin=min(x(:));
ymin=min(y(:));
zmin=min(z(:));
xmax=max(x(:));
ymax=max(y(:));
zmax=max(z(:));
u1=uimenu('parent',h0,...
    'tag','u1',...
    'label','繪圖',...
    'background',[0.75 0.75 0.75]);
u11=uimenu('parent',u1,...
    'tag','u11',...
    'label','繞X軸旋轉(zhuǎn)-45度',...
    'background',[0.75 0.75 0.75],...
    'callback',[...
        'cla,',...
        'hslice=surf(linspace(xmin,xmax,100),linspace(ymin,ymax,100),zeros(100));,',...
        'rotate(hslice,[-1,0,0],-45),',...
        'xd=get(hslice,''xdata'');,',...
        'yd=get(hslice,''ydata'');,',...
        'zd=get(hslice,''zdata'');']);
u12=uimenu('parent',u1,...
    'tag','u12',...
    'label','繞Y軸旋轉(zhuǎn)-45度',...
    'background',[0.75 0.75 0.75],...
    'callback',[...
        'cla,',...
        'hslice=surf(linspace(xmin,xmax,100),linspace(ymin,ymax,100),zeros(100));,',...
        'rotate(hslice,[0,-1,0],-45),',...
        'xd=get(hslice,''xdata'');,',...
        'yd=get(hslice,''ydata'');,',...
        'zd=get(hslice,''zdata'');']);
b1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b1',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','設(shè)置顏色',...
    'position',[50 120 60 25],...
    'callback',[...
        'delete(hslice),',...
        'h=slice(x,y,z,v,xd,yd,zd);,',...
        'set(h,''facecolor'',''interp'',''edgecolor'',''none'',''diffusestrength'',0.8)']);
b2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b2',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','添加切片1',...
    'position',[240 120 60 25],...
    'callback',[...
        'hold on,',...
        'hx=slice(x,y,z,v,xmax,[],[]);,',...
        'set(hx,''facecolor'',''interp'',''edgecolor'',''none'')']);
b3=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b3',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','添加切片2',...
    'position',[240 70 60 20],...
    'callback',[...
        'hold on,',...
        'hy=slice(x,y,z,v,ymax,[],[]);,',...
        'set(hy,''facecolor'',''interp'',''edgecolor'',''none'')']);
b4=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b4',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','添加切片3',...
    'position',[240 20 60 20],...
    'callback',[...
        'hold on,',...
        'hz=slice(x,y,z,v,zmax-1,[],[]);,',...
        'set(hz,''facecolor'',''interp'',''edgecolor'',''none'')']);
b5=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b5',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','燈光效果',...
    'position',[50 70 60 20],...
    'callback',[...
        'daspect([1 1 1]),',...
        'axis tight,',...
        'box on,',...
        'view(-38.5,16),',...
        'camzoom(1.4),',...
        'camproj perspective,',...
        'lightangle(-45,45)']);
b6=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b6',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','colorbar',...
    'position',[50 20 60 20],...
    'callback','colorbar(''horiz'')');
b7=uicontrol('parent',h0,...
    'style','pushbutton',...
    'units','points',...
    'tag','b7',...
    'backgroundcolor',[0.75 0.75 0.75],...
    'string','關(guān)閉',...
    'fontsize',14,...
    'position',[145 75 60 20],...
    'callback','close');
實(shí)例62：簡單計(jì)算器

h0=figure('toolbar','none',...
    'position',[200 60 220 240],...
    'name','實(shí)例62');
b0=uicontrol('parent',h0,...
    'units','points',...
    'tag','b0',...
    'style','pushbutton',...
    'string','0',...
    'fontsize',12,...
    'position',[5 15 35 20],...
    'backgroundcolor',[0.75 0.75 0.75],...
    'callback',[...
        'if k==''0''&i==0,',...
        'errordlg(''數(shù)字首位不能為0''),',...
        'else,',...
        'k=[k,''0''];,',...
        'if k==''00'',',...
        'k=''0'';,',...
        'end,',...
        'set(e1,''string'',k);,',...
        'end']);
b15=uicontrol('parent',h0,...
    'units','points',...
    'tag','b15',...
    'style','pushbutton',...
    'string','=',...
    'fontsize',12,...
    'position',[45 15 35 20],...
    'backgroundcolor',[0.75 0.75 0.75],...