matlab语言编程实例.pdf

实例1:三角函数曲线（1 function shiliOI h0=figure(toolbar7none5.position，,198 56 350 300,.name,实例 0T);h1=axes(parent5hO5.visible,off);x=-pi:0.05:pi;y=sin(x);plot(x5y);xlabel。自变量 X);ylabel。函数值 Y);Ele(8IN()函数曲线)；grid on例2：三角函数曲线(2)function shili02 hO=figure(toolbarVnone5.,positionOO 150 450 350,.name,实例 02);x=-pi:0.05:pi;y=sin(x)+cos(x);plot(x5y；-*rVlinewidth51);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 shili03 hO=figure(toolbarVnone5.position200 150 450 350,.name,实例 03);x=-pi:0.05:pi;y1=sin(x);y2=cos(x);plot(x,y15.x,y2,.-og);grid onxlabel(自变量 X);ylabel(函数值 Y);t出e(三角函数);实例4：双y轴图形的绘制function shili04hO=figure(toolbarVnone5.positiorT200 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,y15x5y25semilogyVplot);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 hO=figure(toolbarVnone5.position,200 150 450 250,.name,实例 05);t=0:pi/10:2*pi;x5y=meshgrid(t);subplot(25251)plot(sin(t)5cos(t)axis equalsubplot(252,2)z=sin(x)-cos(y);plot(t,z)axis(0 2*pi-2 2)subplot(252,3)h=sin(x)+cos(y);plot(t5h)axis(0 2*pi-2 2)subplot(25254)g=(sin(x).A2)-(cos(y).A2);Plot(t.g)axis(0 2*pi-1 1)实例6：图形标注function shili06 hO=figure(,toolbar7noneJ.,position200 150 450 400,.name,实例 06);t=0:pi/10:2*pi;h=plot(t,sin(t);xlabel(t=0 到 2pi7fontsize16);ylabel(sin(t)Vfontsize516);title(it从 0to2pi 的正弦曲线fontsize,16)x=get(h5xdata);y=get(h；ydata);imin=find(min(y)=y);imax=find(max(y)=y);text(x(imin)5y(imin)5.left arrow 最小值=*num2str(y(imin),fontsize,16)text(x(imax),y(imax)5.1 left arrow 最大值=,num2str(y(imax),.fontsize,16)实例7：条形图形function shili07 hO=figure(toolbar5noneJ.,position,200 150 450 350,.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”轴);ylabel(TIAO1 值)；h1=gca;h2=axes(,position,get(h1/position1);plot(t,tiao2,linewidth,3)set(h2JyaxislocationJrightVcolor7noneVxticklaber5)实例8：区域图形function shili08 h0=figure(toolbar7none,.position,200 150 450 250,.name,实例 08);x=91:95;profits1=88 75 84 93 77;profits2=51 64 54 56 68;profits3=42 54 34 25 24;profits4=26 38 18 15 4;area(x,profits15facecolor50.5 0.9 0.6,.edgecolor,b；.linewidth,3)hold onarea(x5profits2；facecolor50.9 0.85 0.7,.edgecolor5y5.Iinewidth,3)hold on area(x5profits35,facecolor0.3 0.6 0.7,.edgecolor,T,.linewidth,3)hold onarea(x5profits4；facecolor50.6 0.5 0.9,.edgecolor,linewidth,3)hold off set(gca/xtick91:95)set(gca；layer7top)gtext(leftarrow 第一季度销量)gtext(leftarrow 第二季度销量)gtext(leftarrow 第三季度销量)gtext(fleftarrow 第四季度销量)xlabel。年丁 fontsize1 16);ylabel(卒肖售量fontsize,16);实例9：饼图的绘制function shili09hO=figure(toolbarVnone5.position200 150 450 250,.name:实例 09);t=54 21 35;68 54 35;45 25 12;48 68 45;68 54 69;x=sum(t);h=pie(x);textobj s=findobj(h,type,text);str1=get(textobjs5 string);val1=get(textobj s,extent);oldext=cat(1,val1:);names=商品一：商品二：商品三：;str2=strcat(names,str1);set(textobjs5 string,str2)val2=get(textobjs,extent);newext=cat(1,val2:);offset=sign(oldext(：51).*(newext(:,3)-oldext(:,3)/2;pos=get(textobjs5 position);textpos=cat(1,pos:);textpos(:,1)=textpos(:51)+offset;set(textobjs5 position 5num2cell(textpos53,2)实例10：阶梯图function shililO hO=figure(toolbar5none5.position，,200 150 450 400,.name;实例 10);a=0.01;b=0.5;t=0:10;f=exp(-a*t).*sin(b*t);stairs(t5f)hold on plot,：*)hold off glabel=函数 eA-(alpha*t)sinbeta*t 的阶梯图 gtext(glabel；fontsize516)xlabel(t=0:10,fontsize,16)axis(0 10-1.2 1.2)实例11：枝干图function shilil 1h0=figure(toolbar7none,.,position200 150 450 350,.name,实例 11);x=0:pi/20:2*pi;y1=sin(x);y2=cos(x);h1=stem(x,y1+y2);hold onh2=plot(x5y1；A r5x5y2；*g);hold offh3=h1(1);h2;Iegend(h3；y1+y27yl=sin(x)Vy2=cos(x)xlabel(自变量 X);ylabel 函数值 Y;title。正弦函数与余弦函数的线性组合力实例12：罗盘图function shili12hO=figure(toolbar5none5.position*200 150 450 250,.name,实例 12);winddirection=54 24 65 84256 12 235 62125 324 34 254;windpower=2 5 5 36 8 12 76 14 10 8;rdirection=winddirection*pi/180;x,y=pol2cart(rdirection5windpower);compass(x,y);desc=风向和风力北京气象台，10 月 1 日 0：00 到10 月 1 日 12：00;gtext(desc)实例13：轮廓图function shili13 hO=figure(toolbarVnone5.position200 150 450 250,.name7实例 13);th5r=meshgrid(0:10:360)*pi/180,0:0.05:1);x,y=pol2cart(th,r);z=x+i*y;f=(z.A 4-1).A(0.25);contour(x5y5abs(f)520)axis equalxlabel(实部fontsize,16);ylabel(虚部？fontsize1 16);h=polar(0 2*pi,0 1);delete(h)hold on contour(x5y5abs(f),20)实例14：交互式图形function shili14 hO=figure(toolbarVnone5.position,200 150 450 250,.name,实例 14);axis(O 10 0 10);hold onX=U；y=;n=0;disp(，单击鼠标左键点取需要的点);disp(，单击鼠标右键点取最后一个点);but=1;while but=1 xi,yiJbut=ginput(1);plot(xi,yi5bo)n=n+1;disp(单击鼠标左键点取下一个点);x(n51)=xi;y(n,1)=yi;endt=1:n;ts=1:0.1:n;xs=spline(t,x5ts);ys=spline(t5y,ts);plot(xs5ys5,r-);hold off实例14：交互式图形function shili14hO=figure(toolbarVnone5.position200 150 450 250,.name,实例 14);axis(0 10 0 10);hold onX=；y=;n=0;dispC单击鼠标左键点取需要的点);dispC单击鼠标右键点取最后一个点);but=1;while but=1xi5yi5but=ginput(1);plot(xi,yi5,bo)n=n+1;dispC单击鼠标左键点取下一个点);x(n51)=xi;y(n,1)=yi;endt=1:n;ts=1:0.1:n;xs=spline(t5x5ts);ys=spline(t,y,ts);plot(xs5ys；r-);hold off实例15：变换的傅立叶函数曲线function shili15hO=figure(toolbarVnone5.position，,200 150 450 250,.name,实例 15);axis equalm=moviein(20,gcf);set(gca5nextplot5replacechildren)h=uicontrol(style5sliderVposition5.100 10 500 20,min1max,20)for j=1:20plot(fft(eye(j+16)set(h5valueJ)m(:J)=getframe(gcf);end elf;axes(position50 0 1 1);movie(m530)实例16：劳伦兹非线形方程的无序活动function shili15hO=figure(toolbarVnone5.position200 150 450 250,.name,实例 15);axis equalm=moviein(20,gcf);set(gca5nextplot5replacechildren)h=uicontrol(styleVslider7position,.100 10 500 20,min1max,20)for j=1:20 plot(fft(eye(j+16)set(h5valueJ)m(:J)=getframe(gcf);end elf;axes(position50 0 1 1);movie(mJ30)实例17：填充图function shili17 hO=figure(toolbar5none5.position,200 150 450 250,.name,实例 17);t=(1:2:15)*pi/8;x=sin(t);y=cos(t)；fill(x,y/r,)axis square off text(050；STOP5.color。1 15.fontsize,50,horizontalalignment,center)实例18：条形图和阶梯形图function shili18hO=figure(toolbar5none5.,positionOO 150 450 250,.name,实例 18);subplot(25251)x=-3:0.2:3;y=exp(-x.*x);bar(x5y)title(2-D Bar Chart)subplot(25252)x=-3:0.2:3;y=exp(-x.*x);bar3(x,y5r)title(3-D Bar Chart)subplot(25253)x=-3:0.2:3;y=exp(-x.*x);stairs(x,y)title(Stair Chart*)subplot(25254)x=-3:0.2:3;y=exp(-x.*x);barh(x5y)title(Horizontal Bar Chart)实例19：三维曲线图function shili19hO=figure(toolbarVnone5.position200 150 450 400,.name7实例 19);subplot(2,151)x=linspace(0,2*pi);y1=sin(x);y2=cos(x);y3=sin(x)+cos(x);z1=zeros(size(x);z2=0.5*z1;z3=z1;plot3(x,y15z1,x,y2,z2,x,y3,z3)grid onxlabel(X 轴)；ylabel(Y 轴);zlabel(Z 轴)；title(Figure1:3-D Plot)subplot(2,152)x=linspace(0,2*pi);y1=sin(x);y2=cos(x);y3=sin(x)+cos(x);z1=zeros(size(x);z2=0.5*z1;z3=z1;plot3(x,z15y1,x,z2,y2,x,z3,y3)grid onxlabel(，X 轴)；ylabel(，Y 轴);zlabel(Z 轴)；title(Figure2:3-D Plot)实例20：图形的隐藏属性function shili20 hO=figure(toolbarVnone5.position，,200 150 450 300,.name,实例 20);subplot(1,2,1)x5y5z=sphere(1O);mesh(x5y,z)axis off title(Figure1:Opaque)hidden onsubplot。22)x5y5z=sphere(1O);mesh(x5y5z)axis offtitle(Figure2:Transparent)hidden off实例21PEAKS函数曲线function shili21 hO=figure(toolbar5none5.position,200 100 450 450,.name?实例 21);x,y,z=peaks(30);subplot(2,1,1)x=x(15:);y=y(：J);i=find(y0.8&y-0.6&x0.8&y-0.6&xn,m=m+1end。end。end);k2=uicontrol(parent5h05.style,pushbutton；.position。80 100 50 30,.Istring7停止、callback.k=0;,set:string”,m)，,p=get(h5xdata);J,5.,q=get(h5nydatan);；J.,set(e25string5p);；5.,set(e35string5q);k3=uicontrol(parent5h05.style,pushbutton；.position,280 100 50 30,.string7关闭 callback?close);e1=uicontrol(parent5h03.style,edit,.position,60 30 60 20);t1=uicontrol(parent,h05.tyle/text,.,string7循环次数，position60 50 60 20);e2=uicontrol(parent,h05.style/edit,.,positional80 30 50 20);t2=uicontrol(parenth05.tyleVtext,.string7终点的X坐标值*,positional55 50 100 20);e3=uicontrol(parent5h05.styleVedit,.,positionSOO 30 50 20);t3=uicontrol(parent5h03.style,text,.string终点的Y坐标值，position275 50 100 20);实例33：曲线转换按钮hO=figure(toolbar5none5.position,200 150 450 250,.name,实例 33);x=0:0.5:2*pi;y=sin(x);h=plot(x,y);grid onhuidiao=.if=1=0;；,.y=cos(x);，,delete(h)55.set(hmjstring”j 正弦函数”)h=plot(x,y);,grid on；,.else if i=O55.y=sin(x);，set(hmjstring”:余弦函数delete(h)；5.h=plot(x,y);,grid on；,.end,，end;hm=uicontrol(gcf5style5pushbutton.string,余弦函数，callback,huidiao);i=1；set(hm,position,250 20 60 20);set(gca,position,0.2 0.2 0.6 0.6)出Ie(按钮的使用)hold on实例34：栅格控制按钮hO=figure(toolbar5none,5.position200 150 450 250,.name,实例 34);x=0:0.5:2*pi;y=sin(x);Plot(x5y)huidiao1=,set(h_toggle25value0)grid on；,.;huidiao2=.,set(h_toggle1:value”,0”,grid off/,.;h.togglel=uicontrol(gcf5styleVtogglebutton5.string/grid on,.value,0,.,positionO 45 50 20,callback5huidiao1);h_toggle2=uicontrol(gcf5styleVtogglebutton5.string,grid off,.value,0,.,positionO 20 50 20,callback,huidiao2);set(gca,position,0.2 0.2 0.6 0.6)title。开关按钮的使用，)实例35：编辑框的使用hO=figure(toolbar5none5.position,200 150 350 250,.name,实例 35);f=Please input the letter;huidiao1=.“upper;,set(h2_edit5string,g);huidiao2=.,g=lower(f);；5.set(h2_edit5string,g);h1_edit=uicontrol(gcf5styleVedit5.,positional00 200 100 50,HorizontalAlignment/left,.string,Please input the letter,.,callback7f=get(h1_editJnstring)background,w；.min,1);h2_edit=uicontrol(gcf5styleVedit5.HorizontalAlignment/left.position4100 100 100 50,background,w,max,5,.h1_button=uicontrol(gcf5style5pushbutton5.string小写变大写，positionll00 45 100 20,.callback5huidiao1);h2_button=uicontrol(gcf5style5pushbutton5.string大写变小写，positionll00 20 100 20,callback,huidiao2);实例36：弹出式菜单hO=figure(,toolbar5none5.position200 150 450 250,.name,实例 36);x=0:0.5:2*pi;y=sin(x);h=plot(x,y);grid onhm=uicontrol(gcf5style5popupmenu5.string,sin(x)|cos(x)|sin(x)+cos(x)|exp(-sin(x),.,position250 20 50 20);set(hm5value51)huidiao=.v=get(hm5value);J.switch v；,case 1delete(h)；5.y=sin(x);，,h=plot(x5y);；5.grid on。case 2,；.delete(h)；5.,y=cos(x)h=plot(x,y)；grid on；,.case 3,；.delete(h)；5.y=sin(x)+cos(x);,.,h=plot(x5y);；5.grid on；,.case 4。.delete(h)；5.,y=exp(-sin(x);；J.h=plot(x,y);,grid on,.end;set(hm,callback,huidiao)set(gca,position,0.2 0.2 0.6 0.6)Mie(弹出式菜单的使用)hold on实例37：滑标的使用hO=figure(toolbar5none5.position200 150 450 250,.name:实例 37);x,y=meshgrid(-8:0.5:8);r=sqrt(x.A 2+y.A 2)+eps;z=sin(r)./r;hO=mesh(x5y5z);h1=axes(position5.0.2 0.2 0.5 0.5,.visible,off);htext=uicontrol(gcf5.units,points,.position,20 30 45 15,.string,brightness,.style,text);hslider=uicontrol(gcf5.units,points,.position。10 300 15,max,1,style,slider,callback1,.brighten(get(hslider5value);实例38：多选菜单h0=figure(toolbar7noneJ.position，,200 150 450 250,.name,实例 38);x,y=meshgrid(-8:0.5:8);r=sqrt(x.A 2+y.A 2)+eps;z=sin(r)./r;hO=mesh(x5y5z);hlist=uicontrol(gcf5style5listbox5.tring/defaultlspringlsummerlautumnl winter,.max,5,min,1,position,20 20 80 100,.callback,k=get(hlist5value);55.switchcase colormap default；,.case 2，colormap spring，case 3,；.colormap summer；,.case 4；,.colormap autumn；,.case 5,；.colormap winter；,.end);实例39：菜单控制的使用 hO=figure(toolbar5none5.position200 150 450 250,.name,实例 39);x=0:0.5:2*pi;y=cos(x);h=plot(x,y);grid onset(gcf,toolbar,none)hm=uimenu(labelVexample);huidiao1=.set(hm_gridon5checked5on)55.set(hm_gridoffchecked Joffgrid on;huidiao2=.set(hm_gridoffcheckedJon)J,.,set(hm_gridon5checked5off)/J.grid off;hm_gridon=uimenu(hm5laber/grid on,.checked,on,callback5huidiao1);hm_gridoff=uimenu(hm5laber/grid off,.checked,of f.callback,huidiao2);实例40：UI MENU菜单的应用hO=figure(toolbarVnone5.position,200 150 450 250,name?实例 40);h1=uimenu(gcf,label,函数)；hi 1=uimenu(h1label,轮廓图，callback,set(h31:checkedJon)。.，set(h32Jchecked Joff.,x5y5z=peaks;；J.contour3(x5y5z530),);h12=uimenu(h1；labelVrf3,5.callback.set(h31:checkedJon).set(h32JcheckedJoff)。,mesh(peaks);55.axis tight);h13=uimenu(h15labelVSinc 函数callback,set(h31:checkedJon)。.,set(h325Hchecked,V,offH)；5.,xJy=meshgrid(-8:0.5:8)r=sqrt(x.A 2+y.A 2)+eps;55.z=sin(r)./r;55.,mesh(x5y5z),);h2=uimenu(gcflabel7色彩);hl2(1)=uimenu(h25laber/Default5.checked/on,.callback1,.-,set(hl2；,checked,V,off,)；5.,set(hl2(1)；,checked,V,onn)；5.colormap(default),);hl2(2)=uimenu(h2,label,spring,.callback1,.,set(hl2；,checked,V,off,)；5.set(hl2(2)JcheckecTJon”)，colormap(spring);hl2(3)=uimenu(h25laber/Summer5.callback：.,set(hl2JHchecked,V,off,)；5.,set(hl2(3)；,checked,V,on,)；J.colormap(summer);hl2(4)=uimenu(h25laber/Autumn5.callback,.set(hl2JcheckecrJoff”,set(hl2(4):checked Jon),colormap(autumn);hl2(5)=uimenu(h2,label,Winter,.callback1,.set(hl2JcheckecrJoff”,set(hl2(5)JcheckedJon)，colormap(winter);h3=uimenu(gcflabel;坐标选项);h31=uimenu(h3/label/Axis on,callback,.axis on；,.set(h31:checkedJon)。，set(h32/checked”Joff);h32=uimenu(h3/label/Axis off,.callback,.axis off。,set(h325checked5non)；J.，set(h31:checked”Joff);实例41：除法计算器h=figure(toolbar,none,.(position,200 150 450 250,.name?实例 41);h1=uicontrol(gcf3style,edit,.(position,80 200 100 20,.HorizontalAlignment,right,.callback,m=get(h1,string)a=str2num(m););h2=uicontrol(gcf,style,edit,.HorizontalAlignment,right,.position,80 150 100 20,callback,n=get(h2,string)b=str2num(n););h3=uicontrol(gcf,style,text,.string?被除数position,80 230 100 20);h4=uicontrol(gcf,style,edit,.(position,80 50 100 20);h5=uicontrol(gcf,style,pushbutton,.(position,80 100 100 20,.string,=,.callback,if b=0；5.h7=errordlg(u除数不能为 0!5error5on);；5.else,.k=a/b;,.c=num2str(k);,.set(h4,string,c),.end);h8=uicontrol(gcf,style,text,.string?除数；.(position,80 175 100 20);h9=uicontrol(gcf,style,text,.string?商，(position,80 75 100 20);实例42：单选框的使用hO=figure(toolbar,none3.position,200 150 450 250,name实例 42);x=0:0.5:2*pi;y=sin(x);Plot(x,y)grid on set(gcf,toolbar,none)g=set(gca,position,0.2 0.2 0.6 0.6);huidiao1=.grid on,set(box_on,value,1 set(box_off,value,0),;huidiao2=.grid off；,.set(box_off,value,1set(box_on,value,0),;box_on=uicontrol(gcf,style7radio,.(position,5 50 50 20,.string,grid on,.value,1,.callback3huidiao1);box_off=uicontrol(gcf,style3radio,.(position,5 20 50 20,.string,grid off,.value,0,.callback,huidiao2);titled无线按钮的使用)实例43：添加环境效果hO=figure(,toolbar,none,.(positional98 56 450 468,，name?实例 43);h1=axes(parent,h0,.position,0.15 0.45 0.7 0.5,.(visible,off);sphere h=findobj(type,surface);shading interp axis equal l=light(position,0-2 1);k(1)=get(h,specularstrength);k(2)=get(h,diffusestrength);k(3)=get(h,specularexponent);k(4)=get(h,specularcolorreflectance);u1=uimenu(parent,h0,.label，/灯光效果.tag,u15.backgroundcolor,0.75 0.75 0.75);u11=uimenu(parent,u1,.label,gouraud,.tag5u115.backgroundcolor,0.75 0.75 0.75,.callback,.set(u11,checked,on)set(u123checked,off);；5.set(h,facelighting5gouraud);u12=uimenu(parent,u1,.label,phong,.tag,u12,.backgroundcolor,0.75 0.75 0.75,.callback*(set(u115checked,off);,5.set(u12,Hchecked,on),set(h,facelighting5gouraud);u2=uimenu(parent,h0,.label，背面灯光*tag,u25.backgroundcolor,0.75 0.75 0.75);u21=uimenu(parent,u2,.label,reverselit,.tag5u215.checked,on3.backgroundcolor,0.75 0.75 0.75,.callback,!，.set(u21,checked,on)set(u223checked,off);；5.,set(h,backfacelighting,reverselit);u22=uimenu(parent,u2,.label,reverselit,.tag,122,backgroundcolor,0.75 0.75 0.75,.callback,(set(u215checked,off);；5.set(u22,checked,on),set(h,backfacelighting,reverselit);s1=uicontrol(parent,hO,.units,points,style,slider,.min,0,.max,1value,k(1),position,20 80 100 15,.callback,s1value=get(s1,value)set(h,specularstreng