matlab实例100篇（经典）

实例47：曲线标记 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('自变量X'); ylabel('函数值Y'); title('标记类型的改变'); 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','关闭',... 'position',[150 30 80 60],... 'callback','close'); t1=uicontrol('parent',h0,... 'style','text',... 'string','星号',... 'fontsize',12,... 'fontweight','demi',... 'position',[60 120 50 20]); t2=uicontrol('parent',h0,... 'style','text',... 'string','圆圈',... 'fontsize',12,... 'fontweight','demi',... 'position',[170 120 50 20]); t3=uicontrol('parent',h0,... 'style','text',... 'string','叉号',... 'fontsize',12,... 'fontweight','demi',... 'position',[280 120 50 20]); 实例48：修改曲型 h0=figure('toolbar','none',... 'position',[198 56 408 468],... 'name','实例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('自变量X'); ylabel('函数值Y'); title('线型的改变'); 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','关闭',... 'position',[150 30 80 60],... 'callback','close'); t1=uicontrol('parent',h0,... 'style','text',... 'string','点划线',... 'fontsize',12,... 'fontweight','demi',... 'position',[60 120 50 20]); t2=uicontrol('parent',h0,... 'style','text',... 'string','虚线',... 'fontsize',12,... 'fontweight','demi',... 'position',[170 120 50 20]); t3=uicontrol('parent',h0,... 'style','text',... 'string','实线',... 'fontsize',12,... 'fontweight','demi',... 'position',[280 120 50 20]); 实例49：指定坐标轴范围 h0=figure('toolbar','none',... 'position',[198 56 408 468],... 'name','实例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('坐标轴范围的改变'); 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轴最小值',... '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轴最大值',... '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轴最小值',... '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轴最小值',... 'position',[270 85 80 20]); p1=uicontrol('parent',h0,... 'style','pushbutton',... 'string','设置',... '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','关闭',... 'position',[275 10 50 30],... 'callback','close'); 实例50：绘制不同函数曲线的用户界面 h0=figure('toolbar','none',... 'position',[198 56 408 468],... 'name','实例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','绘图',... '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','关闭',... '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','选择函数',... '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')