文档介绍：MATLAB实用程序百例
实例1:三角函数曲线(1) function shili01 h0=figure('toolbar','none',...
'position',[198 56 350 300],...
'name','实例01');
h1=axes('parent',h0,...
'visible','off');
x=-pi::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 shili02 h0=figure('toolbar','none',...
'position',[200 150 450 350],...
'name','实例02');
x=-pi::pi;
y=sin(x)+cos(x);
plot(x,y,'-*r','linewidth',1); grid on
xlabel('自变量X');
ylabel('函数值Y');
title('三角函数');
实例3:图形的叠加 function shili03
h0=figure('toolbar','none',...
'position',[200 150 450 350],...
'name','实例03');
x=-pi::pi; y1=sin(x); y2=cos(x); plot(x,y1,...
'-*r',...
x,y2,...
'--og');
grid on xlabel('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 shili04 h0=figure('toolbar','none',...
'position',[200 150 450 250],...
'name','实例04'); x=0:900;a=1000;b=;
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 shili05 h0=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 shili06
h0=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=',num2str(y(imax))],... 'fontsize',16)
实例7:条形图形 function shili07
h0=figure('toolb