matlab期末复习练习题8题.pdfVIP

matlab期末复习练习题8题

1.

functionrandisplayjiongaxisoff;

set(gcf,menubar,none,toolbar,none);fork=1:100

h=text(rand,rand,...

[\fontsize{,num2str(unifrnd(20,50)),}\fontname{楷书}],...

color,rand(1,3),rotation,360*rand);pause(0.2);end

2.小猫

functiont=cat_in_holl(n)t=zeros(1,n);fork=1:n

c=unidrnd(3,1);whilec~=1ifc==2

t(k)=t(k)+4;else

t(k)=t(k)+6;end

c=unidrnd(3,1);end

t(k)=t(k)+2;endmean(t,2)

3.矩阵

functionex2_3_6slowa=unidrnd(100,1000000,7);b=zeros(1000000,3);tic

form=1:1000000a=a(m,:);b=[468];forii=1:3

dd=a(a==b(ii));ifisempty(dd)==0b(ii)=0;endendb(m,:)=b;end

toc

4.三角形

functiontriangle_tablefig=

figure(defaultuicontrolunits,normalized,name,triangle_table,...

numbertitle,off,menubar,none);ah=axes(pos,[.1.2.75.75],visible,of

f);

slider_h=uicontrol(style,slider,units,normalized,pos,...

[0.1,0.05,0.75,0.05],sliderstep,[1/6,0.05],callback,@change_color);holdonf

ork=0:6

plot(0:6-k,(6-k)*ones(1,(7-k)),k);plot(k*ones(1,(7-k)),k:6,k);end

plot([0,6],[0,6],k);holdoff;forx=1:5fory=1:x

text(y-0.5,x+0.5,num2str(x),color,k,tag,数字);endend

fork=0:5

text(k+0.1,k+0.5,[num2str(k),.5],tag,数字);end

%====sliderscallbackfunction(nestedfunction)======functionchange_color(ho

bject,eventdata)v=round(6*get(slider_h,value));num_h=findobj(tag,数字

);num_pos=get(num_h,pos);

red_num_logic=cellfun(@(x)(x(1)=vx(2)=v),num_pos);set(num_h(red_num_logic)

,color,r);set(num_h(~red_num_logic),color,k);endend

5.画图象

%p82基准5.4-3

function[m,n,tt]=plot3dnmt(n,l)c=zeros(n,1);m=linspace(0,2,l);[m,n]=meshgrid(m

,m);tt=zeros(size(n));

forii=1:lforjj=1:l

tt(ii,jj)=calct(m(ii,jj),n(ii,jj));endend

functiontmn=calct(mm,nn)forn1=1:n

c(n1)=(mm^n1/gamma(n1+1))*sum(nn.^(0:n1-1)./gamma(1:n1));tmn=1.0-exp(-mm-

nn)*sum(c);endend

mesh(n,m,tt);end

6.