NA modal MATLAB code.rar_MATLAB交通_交通模型_交通流_交通流matlab_交通流模型

clf clear %build the GUI %define the plot button plotbutton=uicontrol('style','pushbutton',... 'string','Run', ... 'fontsize',12, ... 'position',[100,400,50,20], ... 'callback','run=1;'); %define the stop button erasebutton=uicontrol('style','pushbutton',... 'string','Stop', ... 'fontsize',12, ... 'position',[200,400,50,20], ... 'callback','freeze=1;'); %define the Quit button quitbutton=uicontrol('style','pushbutton',... 'string','Quit', ... 'fontsize',12, ... 'position',[300,400,50,20], ... 'callback','stop=1;close;'); number = uicontrol('style','text', ... 'string','1', ... 'fontsize',12, ... 'position',[20,400,50,20]); n = 100; %数据初始化 z=zeros(1,n); %元胞个数 z=roadstart(z,5); %道路状态初始化，路段上随机分布5辆 cells=z; vmax=3; %最大速度 v=speedstart(cells,vmax); %速度初始化 x=1; %记录速度和车辆位置 memor_cells=zeros(3600,n); memor_v=zeros(3600,n); imh=imshow(cells); %初始化图像白色有车，黑色空元胞 set(imh,'erasemode','none') axis equal axis tight stop=0;%wait for a quit button push run=0; %wait for a draw freeze=0; %wait for a freeze（冻结） while (stop==0) if(run==1) %边界条件处理，搜素首末车，控制进出，使用开口条件 a=searchleadcar(cells); b=searchlastcar(cells); [cells,v]=border_control(cells,a,b,v,vmax); i=searchleadcar(cells); %搜索首车位置 for j=1:i if i-j+1==n [z,v]=leadcarupdate(z,v); continue; else %======================================加速、减速、随机慢化 if cells(i-j+1)==0; %判断当前位置是否非空 continue; else v(i-j+1)=min(v(i-j+1)+1,vmax); %加速 %=================================减速 k=searchfrontcar((i-j+1),cells); %搜素前方首个非空元胞位置 if k==0; %确定于前车之间的元胞数 d=n-(i-j+1); else d=k-(i-j+1)-1; end v(i-j+1)=min(v(i-j+1),d); %==============================%减速 %随机慢化 v(i-j+1)=randslow(v(i-j+1)); new_v=v(i-j+1); %======================================加速、减速、随机慢化 %更新车辆位置 z(i-j+1)=0; z(i-j+1+new_v)=1; %更新速度 v(i-j+1)=0; v(i-j+1+new_v)=new_v; end end end cells=z; memor_cells(x,:)=cells; %记录速度和车辆位置 memor_v(x,:)=v; x=x+1; set(imh,'cdata',cells) %更新图像 %update the step number diaplay pause(0.2); stepnumber = 1 + str2num(get(number,'string')); set(number,'string',num2str(stepnumber)) end if(freeze==1) run = 0; freeze = 0 end drawnow end