程序代码： (代码标记??[code]...[/code]??)1-32是：图形应用篇

33-66是：界面设计篇

67-84是：图形处理篇

85-100是：数值分析篇

实例1：三角函数曲线(1)function shili01h0=figure('toolbar','none',...? ?'position',[198 56 350 300],...? ?'name','实例01');h1=axes('parent',h0,...? 'visible','off');x=-pi:0.05:pi;y=sin(x);plot(x,y);xlabel('自变量X');ylabel('函数值Y');title('SIN( )函数曲线');grid on

实例2：三角函数曲线(2)function shili02h0=figure('toolbar','none',...? ?'position',[200 150 450 350],...? ?'name','实例02');x=-pi:0.05:pi;y=sin(x)+cos(x);plot(x,y,'-*r','linewidth',1);grid onxlabel('自变量X');ylabel('函数值Y');title('三角函数');

实例3：图形的叠加function shili03h0=figure('toolbar','none',...? ?'position',[200 150 450 350],...? ?'name','实例03');x=-pi:0.05:pi;y1=sin(x);y2=cos(x);plot(x,y1,...? ?'-*r',...? ?x,y2,...? ?'--og');grid onxlabel('自变量X');ylabel('函数值Y');title('三角函数');

实例4：双y轴图形的绘制function shili04h0=figure('toolbar','none',...? ?'position',[200 150 450 250],...? ?'name','实例04');x=0:900;a=1000;b=0.005;y1=2*x;y2=cos(b*x);[haxes,hline1,hline2]=plotyy(x,y1,x,y2,'semilogy','plot');axes(haxes(1))ylabel('semilog plot');axes(haxes(2))ylabel('linear plot');

实例5：单个轴窗口显示多个图形function shili05h0=figure('toolbar','none',...? ?'position',[200 150 450 250],...? ?'name','实例05');t=0:pi/10:2*pi;[x,y]=meshgrid(t);subplot(2,2,1)plot(sin(t),cos(t))axis equal

subplot(2,2,2)z=sin(x)-cos(y);plot(t,z)axis([0 2*pi -2 2])

subplot(2,2,3)h=sin(x)+cos(y);plot(t,h)axis([0 2*pi -2 2])

subplot(2,2,4)g=(sin(x).^2)-(cos(y).^2);plot(t,g)axis([0 2*pi -1 1])

实例6：图形标注function shili06h0=figure('toolbar','none',...? ?'position',[200 150 450 400],...? ?'name','实例06');t=0:pi/10:2*pi;h=plot(t,sin(t));xlabel('t=0到2\pi','fontsize',16);ylabel('sin(t)','fontsize',16);title('\it{从 0to2\pi 的正弦曲线}','fontsize',16)x=get(h,'xdata');y=get(h,'ydata');imin=find(min(y)==y);imax=find(max(y)==y);text(x(imin),y(imin),...? ?['\leftarrow最小值=',num2str(y(imin))],...? ?'fontsize',16)text(x(imax),y(imax),...? ?['\leftarrow最大值=',num2