美赛A题基于某NS模型的超车模型Matlab代码新鲜出炉.docx
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美赛A题基于某NS模型的超车模型Matlab代码新鲜出炉
plotbutton=uicontrol('style','pushbutton',...
'string','Run',...
'fontsize',12,...
'position',[100,400,50,20],...
'callback','run=1;');
%definethestopbutton
erasebutton=uicontrol('style','pushbutton',...
'string','Stop',...
'fontsize',12,...
'position',[200,400,50,20],...
'callback','freeze=1;');
%definetheQuitbutton
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]);
%==============================
%CAsetup
n=128;
%initializethearrays
z=zeros(n,n);
cells=z;
sum=z;
%setafewcellstoone
cells(n/2,.25*n:
.75*n)=1;
cells(.25*n:
.75*n,n/2)=1;
%cells(.5*n-1,.5*n-1)=1;
%cells(.5*n-2,.5*n-2)=1;
%cells(.5*n-3,.5*n-3)=1;
cells=(rand(n,n))<.5;
%howlongforeachcasetostabilityorsimpleoscillators
%buildanimageanddisplayit
imh=image(cat(3,cells,z,z));
set(imh,'erasemode','none')
axisequal
axistight
%indexdefinitionforcellupdate
x=2:
n-1;
y=2:
n-1;
%Maineventloop
stop=0;%waitforaquitbuttonpush
run=0;%waitforadraw
freeze=0;%waitforafreeze
while(stop==0)
if(run==1)
%nearestneighborsum
sum(x,y)=cells(x,y-1)+cells(x,y+1)+...
cells(x-1,y)+cells(x+1,y)+...
cells(x-1,y-1)+cells(x-1,y+1)+...
cells(3:
n,y-1)+cells(x+1,y+1);
%TheCArule
cells=(sum==3)|(sum==2&cells);
%drawthenewimage
set(imh,'cdata',cat(3,cells,z,z))
%updatethestepnumberdiaplay
stepnumber=1+str2num(get(number,'string'));
set(number,'string',num2str(stepnumber))
end
if(freeze==1)
run=0;
freeze=0;
end
drawnow%needthisintheloopforcontrolstowork
end
2、SurfaceTension
%Conway'slifewithGUI
clf;clearall
%=============================================
%buildtheGUI
%definetheplotbutton
plotbutton=uicontrol('style','pushbutton',...
'string','Run',...
'fontsize',12,...
'position',[100,400,50,20],...
'callback','run=1;');
%definethestopbutton
erasebutton=uicontrol('style','pushbutton',...
'string','Stop',...
'fontsize',12,...
'position',[200,400,50,20],...
'callback','freeze=1;');
%definetheQuitbutton
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]);
%=============================================
%CAsetup
n=128;
%initializethearrays
z=zeros(n,n);
cells=z;
sum=z;
%setafewcellstoone
cells(n/2,.25*n:
.75*n)=1;
cells(.25*n:
.75*n,n/2)=1;
%cells(.5*n-1,.5*n-1)=1;
%cells(.5*n-2,.5*n-2)=1;
%cells(.5*n-3,.5*n-3)=1;
cells=(rand(n,n))<.5;
%howlongforeachcasetostabilityorsimpleoscillators
%buildanimageanddisplayit
imh=image(cat(3,cells,z,z));
set(imh,'erasemode','none')
axisequal
axistight
%indexdefinitionforcellupdate
x=2:
n-1;
y=2:
n-1;
%Maineventloop
stop=0;%waitforaquitbuttonpush
run=0;%waitforadraw
freeze=0;%waitforafreeze
while(stop==0)
if(run==1)
%nearestneighborsum
sum(x,y)=cells(x,y-1)+cells(x,y+1)+...
cells(x-1,y)+cells(x+1,y)+...
cells(x-1,y-1)+cells(x-1,y+1)+...
cells(3:
n,y-1)+cells(x+1,y+1)+...
cells(x,y);
%TheCArule
cells=~((sum<4)|(sum==5));
%drawthenewimage
set(imh,'cdata',cat(3,cells,z,z))
%updatethestepnumberdiaplay
stepnumber=1+str2num(get(number,'string'));
set(number,'string',num2str(stepnumber))
end
if(freeze==1)
run=0;
freeze=0;
end
drawnow%needthisintheloopforcontrolstowork
end
3、PercolationCluster
%PercolationCluster
clf
clearall
threshold=.63;
%
ax=axes('units','pixels','position',[11500400],'color','k');
text('units','pixels','position',[50,255,0],...
'string','BioNB','color','w','fontname','helvetica','fontsize',100)
text('units','pixels','position',[120,120,0],...
'string','441','color','w','fontname','helvetica','fontsize',100)
initial=getframe(gca);
[a,b,c]=size(initial.cdata);
z=zeros(a,b);
cells=double(initial.cdata(:
:
1)==255);
visit=z;
sum=z;
imh=image(cat(3,z,cells,z));
set(imh,'erasemode','none')
%return
fori=1:
100
sum(2:
a-1,2:
b-1)=cells(2:
a-1,1:
b-2)+cells(2:
a-1,3:
b)+...
cells(1:
a-2,2:
b-1)+cells(3:
a,2:
b-1)+...
cells(1:
a-2,1:
b-2)+cells(1:
a-2,3:
b)+...
cells(3:
a,1:
b-2)+cells(3:
a,3:
b);
pick=rand(a,b);
%edgesonly
%cells=(cells&(sum<8))|((sum>=1)&(pick>=threshold)&(visit==0));
cells=cells|((sum>=1)&(pick>=threshold)&(visit==0));
visit=(sum>=1);%&(pickset(imh,'cdata',cat(3,z,cells,z))
drawnow
end
return
figure
(2)
image(cat(3,z,cells,z))
4、Excitablemedia(BZreactionorheart)
%CAdriver
%excitablemedia
clf;clearall
n=128;
z=zeros(n,n);
cells=z;
cells=(rand(n,n))<.1;
%cells(n/2,n*.25:
n*.75)=1;
%cells(n*.25:
n*.75,n/2)=1;
sum=z;
imh=image(cat(3,cells,z,z));
set(imh,'erasemode','none')
axisequal
axistight
x=[2:
n-1];y=[2:
n-1];
t=6;%centervalue=6;7makesfastpattern;5analiatingwaves
t1=3;%centervalue=3
fori=1:
1200
sum(x,y)=((cells(x,y-1)>0)&(cells(x,y-1)0)&(cells(x,y+1)((cells(x-1,y)>0)&(cells(x-1,y)0)&(cells(x+1,y)((cells(x-1,y-1)>0)&(cells(x-1,y-1)0)&(cells(x-1,y+1)((cells(x+1,y-1)>0)&(cells(x+1,y-1)0)&(cells(x+1,y+1)cells=((cells==0)&(sum>=t1))+...
2*(cells==1)+...
3*(cells==2)+...
4*(cells==3)+...
5*(cells==4)+...
6*(cells==5)+...
7*(cells==6)+...
8*(cells==7)+...
9*(cells==8)+...
0*(cells==9);
set(imh,'cdata',cat(3,z,cells/10,z))
drawnow
end
5、ForestFire
%CAdriver
%
%forestfire
clf
clearall
n=100;
Plightning=.000005;
Pgrowth=.01;%.01
z=zeros(n,n);
o=ones(n,n);
veg=z;
sum=z;
imh=image(cat(3,z,veg*.02,z));
set(imh,'erasemode','none')
axisequal
axistight
%burning->empty
%green->burningifoneneigborburningorwithprob=f(lightning)
%empty->greenwithprob=p(growth)
%veg={empty=0burning=1green=2}
fori=1:
3000
%nearbyfires?
sum=(veg(1:
n,[n1:
n-1])==1)+(veg(1:
n,[2:
n1])==1)+...
(veg([n1:
n-1],1:
n)==1)+(veg([2:
n1],1:
n)==1);
veg=...
2*(veg==2)-((veg==2)&(sum>0|(rand(n,n)2*((veg==0)&rand(n,n)set(imh,'cdata',cat(3,(veg==1),(veg==2),z))
drawnow
end
6、Gasdynamics
%CAdriver
%HPP-gas
clearall
clf
nx=52;%mustbedivisibleby4
ny=100;
z=zeros(nx,ny);
o=ones(nx,ny);
sand=z;
sandNew=z;
gnd=z;
diag1=z;
diag2=z;
and12=z;
or12=z;
sums=z;
orsum=z;
gnd(1:
nx,ny-3)=1;%rightgroundline
gnd(1:
nx,3)=1;%leftgroundline
gnd(nx/4:
nx/2-2,ny/2)=1;%theholeline
gnd(nx/2+2:
nx,ny/2)=1;%theholeline
gnd(nx/4,1:
ny)=1;%topline
gnd(3*nx/4,1:
ny)=1;%bottomline
%filltheleftside
r=rand(nx,ny);
sand(nx/4+1:
3*nx/4-1,4:
ny/2-1)=r(nx/4+1:
3*nx/4-1,4:
ny/2-1)<0.3;
%sand(nx/4+1:
3*nx/4-1,ny*.75:
ny-4)=r(nx/4+1:
3*nx/4-1,ny*.75:
ny-4)<0.75;
%sand(nx/2,ny/2)=1;
%sand(nx/2+1,ny/2+1)=1;
imh=image(cat(3,z,sand,gnd));
set(imh,'erasemode','none')
axisequal
axistight
fori=1:
1000
p=mod(i,2);%margolisneighborhood
%upperleftcellupdate
xind=[1+p:
2:
nx-2+p];
yind=[1+p:
2:
ny-2+p];
%Seeifexactlyonediagonalisones
%only(atmost)oneofthefollowingcanbetrue!
diag1(xind,yind)=(sand(xind,yind)==1)&(sand(xind+1,yind+1)==1)&...
(sand(xind+1,yind)==0)&(sand(xind,yind+1)==0);
diag2(xind,yind)=(sand(xind+1,yind)==1)&(sand(xind,yind+1)==1)&...
(sand(xind,yind)==0)&(sand(xind+1,yind+1)==0);
%Thediagonalsbothnotoccupiedbytwoparticles
and12(xind,yind)=(diag1(xind,yind)==0)&(diag2(xind,yind)==0);
%Onediagonalisoccupiedbytwoparticles
or12(xind,yind)=diag1(xind,yind)|diag2(xind,yind);
%foreverygasparticleseeifitneartheboundary
sums(xind,yind)=gnd(xind,yind)|gnd(xind+1,yind)|...
gnd(xind,yind+1)|gnd(xind+1,yind+1);
%celllayout:
%x,yx+1,y
%x,y+1x+1,y+1
%If(nowalls)and(diagonalsarebothnotoccupied)
%thenthereisnocollision,somoveoppositecelltocurrentcell
%If(nowalls)and(onlyonediagonalisoccupied)
%thenthereisacollisionsomoveccwcelltothecurrentcell
%If(awall)
%thendon'tchangethecell(causesareflection)
sandNew(xind,yind)=...
(and12(xind,yind)&~sums(xind,yind)&sand(xind+1,yind+1))+...
(or12(xind,yind)&~sums(xind,yind)&sand(xind,yind+1))+...
(sums(xind,yind)&sand(xind,yind));
sandNew(xind+1,yind)=...
(and12(xind,yind)&~sums(xind,yind)&sand(xind,yind+1))+...
(or12(xind,yind)&~sums(xind,yind)&sand(xind,yind))+...
(sums(xind,yind)&sand(xind+1,yind));
sandNew(xind,yind+1)=...
(and12(xind,yind)&~sums(xind,yind)&sand(xind+1,yind))+...
(or12(xind,yind)&~sums(xind,yind)&sand(xind+1,yind+1))+...
(sums(xind,yind)&sand(xind,yind+1));
sandNew(xind+1,yind+1)=...
(and12(xind,yind)&~sums(xind,yin