数学建模案例MATLAB实用程序百例解读.docx

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: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 shili02 h0=figure(toolbar,none,...position,[200 150 450350],...name,实例02);x=-pi:0.05:pi;y=sin(x)+cos(x);plot(x,y,-*r,linewidth,1); gridonxlabel(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 450350],...name,实例03);x=-pi:0.05: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 450250],...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 shili05 h0=figure(toolbar,none,...position,[200 150 450250],...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 450400],...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 shili07h0=figure(toolbar,none,...position,[200 150 450350],...name,实例07);tiao1=[562 548 224 545 41 445 745 512];tiao2=[47 48 57 58 54 52 65 48]; t=0:7;bar(t,tiao1) xlabel(X轴); ylabel(TIAO1值);h1=gca; h2=axes(position,get(h1,position)); plot(t,tiao