'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]);




實例47：曲線標記

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('標記類型的改變');
p1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','+',...
    'fontsize',20,...
    'foregroundcolor',[1 1 1],...
    'backgroundcolor',[0 0 0],...
    'position',[60 100 50 20],...
    'callback','set(k,''marker'',''+'')');
p2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','o',...
    'fontsize',20,...
    'foregroundcolor',[1 1 1],...
    'backgroundcolor',[0 0 0],...
    'position',[170 100 50 20],...
    'callback','set(k,''marker'',''o'')');
p3=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','x',...
    'fontsize',20,...
    'foregroundcolor',[1 1 1],...
    'backgroundcolor',[0 0 0],...
    'position',[280 100 50 20],...
    'callback','set(k,''marker'',''x'')');
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','星號',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[60 120 50 20]);
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','圓圈',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[170 120 50 20]);
t3=uicontrol('parent',h0,...
    'style','text',...
    'string','叉號',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[280 120 50 20]);
實例48：修改曲型

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','實例48');
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('線型的改變');
p1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','-.',...
    'fontsize',20,...
    'foregroundcolor',[1 1 1],...
    'backgroundcolor',[0 0 0],...
    'position',[60 100 50 20],...
    'callback','set(k,''linestyle'',''-.'')');
p2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string',':',...
    'fontsize',20,...
    'foregroundcolor',[1 1 1],...
    'backgroundcolor',[0 0 0],...
    'position',[170 100 50 20],...
    'callback','set(k,''linestyle'','':'')');
p3=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','-',...
    'fontsize',20,...
    'foregroundcolor',[1 1 1],...
    'backgroundcolor',[0 0 0],...
    'position',[280 100 50 20],...
    'callback','set(k,''linestyle'',''-'')');
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','點劃線',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[60 120 50 20]);
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','虛線',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[170 120 50 20]);
t3=uicontrol('parent',h0,...
    'style','text',...
    'string','實線',...
    'fontsize',12,...
    'fontweight','demi',...
    'position',[280 120 50 20]);
實例49：指定坐標軸范圍

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','實例49');
h1=axes('parent',h0,...
    'position',[0.15 0.45 0.7 0.5],...
    'visible','on');
x=0:0.1:2*pi;
y=sin(x);
plot(x,y);
xlabel('X');
ylabel('Y');
title('坐標軸范圍的改變');
h=get(gca,'xlim');
k=get(gca,'ylim');
e1=uicontrol('parent',h0,...
    'style','edit',...
    'string',eval(num2str(h(1))),...
    'horizontalalignment','right',...
    'position',[80 120 100 20]);
t1=uicontrol('parent',h0,...
    'style','text',...
    'string','X軸最小值',...
    'position',[100 145 80 20]);
e2=uicontrol('parent',h0,...
    'style','edit',...
    'string',eval(num2str(h(2))),...
    'horizontalalignment','right',...
    'position',[80 60 100 20]);
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','X軸最大值',...
    'position',[100 85 80 20]);
e3=uicontrol('parent',h0,...
    'style','edit',...
    'string',eval(num2str(k(1))),...
    'horizontalalignment','right',...
    'position',[250 120 100 20]);
t3=uicontrol('parent',h0,...
    'style','text',...
    'string','Y軸最小值',...
    'position',[270 145 80 20]);
e4=uicontrol('parent',h0,...
    'style','edit',...
    'string',eval(num2str(k(2))),...
    'horizontalalignment','right',...
    'position',[250 60 100 20]);
t4=uicontrol('parent',h0,...
    'style','text',...
    'string','X軸最小值',...
    'position',[270 85 80 20]);
p1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','設置',...
    'position',[105 10 50 30],...
    'callback',[...
        'a=str2num(get(e1,''string''));,',...
        'b=str2num(get(e2,''string''));,',...
        'c=str2num(get(e3,''string''));,',...
        'd=str2num(get(e4,''string''));,',...
        'axis([a b c d]),',...
        'drawnow']);
p2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','關閉',...
    'position',[275 10 50 30],...
    'callback','close');
實例50：繪制不同函數曲線的用戶界面

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','實例50');
h1=axes('parent',h0,...
    'position',[0.29 0.45 0.7 0.5],...
    'visible','on');
f=uicontrol('parent',h0,...
    'style','frame',...
    'position',[5 50 90 400]);
p1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'position',[150 100 60 40],...
    'string','繪圖',...
    'callback',[...
        'm=str2num(get(e1,''string''));,',...
        'n=str2num(get(e2,''string''));,',...
        'a=get(l1,''value'');,',...
        'x=m:0.1:n;',...
        'if a==1,',...
        'plot(x,sin(x)),',...
        'end,',...
        'if a==2,',...
        'plot(x,cos(x)),',...
        'end,',...
        'if a==3,',...
        'plot(x,exp(x)),',...
        'end']);
p2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'position',[270 100 60 40],...
    'string','關閉',...
    'callback','close');
l1=uicontrol('parent',h0,...
    'style','listbox',...
    'position',[10 300 80 80],...
    'string','sin(x)|cos(x)|exp(x)',...
    'value',1,...
    'max',0.5,...
    'min',0);
f2=uicontrol('parent',h0,...
    'style','text',...
    'string','選擇函數',...
    'fontsize',10,...
    'position',[10 380 80 20]);
r1=uicontrol('style','radio',...
    'string','grid on',...
    'value',0,...
    'position',[10 100 60 20],...
    'callback',[...
        'grid on,',...
        'set(r1,''value'',1);,',...
        'set(r2,''value'',0)']);
r2=uicontrol('style','radio',...
    'string','grid off',...
    'position',[10 80 60 20],...
    'value',1,...
    'callback',[...
        'grid off,',...
        'set(r2,''value'',1);,',...
        'set(r1,''value'',0)']);
e1=uicontrol('parent',h0,...
    'style','edit',...
    'string',0,...
    'position',[20 210 60 20],...
    'horizontalalignment','right');
e2=uicontrol('parent',h0,...
    'style','edit',...
    'string','3',...
    'position',[20 150 60 20],...
    'horizontalalignment','right');
t1=uicontrol('parent',h0,...
    'style','text',...
    'string','X from',...
    'fontsize',10,...
    'position',[20 230 60 20],...
    'horizontalalignment','center');
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','To',...
    'fontsize',10,...
    'position',[20 170 60 20],...
    'horizontalalignment','center');
實例51：可設置函數曲線圖視角的用戶界面

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','實例51');
h1=axes('parent',h0,...
    'position',[0.15 0.45 0.7 0.5],...
    'visible','off');
[x,y]=meshgrid(-8:0.5:8);
r=sqrt(x.^2+y.^2)+eps;
z=sin(r)./r;
f1=surf(x,y,z);
shading interp
view(-50,30)
camlight left
colormap([1 0 0])
fv=get(h0,'colormap');
ifv=fv;
p1=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','重置',...
    'position',[280 120 50 30],...
    'callback',[...
        'set(s1,''value'',ifv(1));,',...
        'set(s2,''value'',ifv(2));,',...
        'set(s3,''value'',ifv(3));,',...
        'set(h0,''colormap'',ifv)']);
p2=uicontrol('parent',h0,...
    'style','pushbutton',...
    'string','關閉',...
    'position',[280 60 50 30],...
    'callback','close');
s1=uicontrol('parent',h0,...
    'style','slider',...
    'min',0,...
    'max',1,...
    'value',fv(1),...
    'position',[20 150 200 20],...
    'callback',[...
        's1k=get(s1,''value'');,',...
        'fv(1)=s1k;,',...
        'set(h0,''colormap'',fv);']);
t1=uicontrol('parent',h0,...
    'style','text',...
    'string','改變紅色成分',...
    'position',[20 170 100 20]);
s2=uicontrol('parent',h0,...
    'style','slider',...
    'min',0,...
    'max',1,...
    'value',fv(2),...
    'position',[20 100 200 20],...
    'callback',[...
        's2k=get(s2,''value'');,',...
        'fv(2)=s2k;,',...
        'set(h0,''colormap'',fv);']);
t2=uicontrol('parent',h0,...
    'style','text',...
    'string','改變綠色成分',...
    'position',[20 120 100 20]);
s3=uicontrol('parent',h0,...
    'style','slider',...
    'min',0,...
    'max',1,...
    'value',fv(3),...
    'position',[20 50 200 20],...
    'callback',[...
        's3k=get(s3,''value'');,',...
        'fv(3)=s3k;,',...
        'set(h0,''colormap'',fv);']);
t1=uicontrol('parent',h0,...
    'style','text',...
    'string','改變藍色成分',...
    'position',[20 70 100 20]); 
實例52：可設置函數曲線圖視角的用戶界面

h0=figure('toolbar','none',...
    'position',[198 56 408 468],...
    'name','實例52');
h1=axes('parent',h0,...
    'position',[0.15 0.5 0.7 0.5],...
    'visible','off');
[x,y]=meshgrid(-8:0.5:8);
r=sqrt(x.^2+y.^2)+eps;
z=sin(r)./r;
fh=surf(x,y,z);
shading interp
view([-60 30])
fv=get(h1,'view');
fv2=fv;
camlight left
sh1=uicontrol('parent',h0,...
    'style','slider',...
    'max',1,...
    'min',-1,...
    'value',fv(1)/180,...
    'position',[20 150 200 20],...
    'callback',[...
        'fv(1)=90*get(sh1,''value'');,',...
        'set(h1,''view'',[fv(1) fv(2)]),',...
        'set(ed1,''string'',fv(1))']);   
text1=uicontrol('parent',h0,...
    'style','text',...
    'string','方位角的變化滑標',...
    'position',[20 170 200 20]);
sh2=uicontrol('parent',h0,...
    'style','slider',...
    'max',1,...
    'min',-1,...
    'value',fv(2)/180,...
    'position',[20 90 200 20],...
    'callback',[...
        'fv(2)=90*get(sh2,''value'');,',...
        'set(h1,''view'',[fv(1) fv(2)]),',...
        'set(ed2,''string'',fv(2))']);
text2=uicontrol('parent',h0,...
    'style','text',...
    'string','仰角的變化滑標',...
    'position',[20 110 200 20]);
ed1=uicontrol('parent',h0,...
    'style','edit',...
    'string',fv(1),...
    'position',[30 30 50 20]);
text3=uicontrol('parent',h0,...
    'style','text',...
    'string','方位角的數值',...
    'position',[20 50 80 20]);
ed2=uicontrol('parent',h0,...
    'style','edit',...
    'string',fv(2),...
    'position',[150 30 50 20]);
text4=uicontrol('parent',h0,...
    'style','text',...