Matalab IFS分形算法

IFS 算法代码

function IFS_draw(M,p)
N=300000;
for k=1:length(p);
    eval([‘a‘,num2str(k),‘=reshape(M(‘,num2str(k),‘,:),2,3);‘]);
end
xy=zeros(2,N);
pp=meshgrid(p);
pp=tril(pp);
pp=sum(pp,2);
for k=1:N-1;
    a=rand-pp;
d=find(a<=0);
    xy(:,k+1)=eval([‘a‘,num2str(d(1)),‘(:,1:2)‘])*xy(:,k)+eval([‘a‘,num2str(d(1)),‘(:,3)‘]);
end;
P=complex(xy(1,:),xy(2,:));
plot(P,‘y.‘, ‘MarkerFaceColor‘,‘y‘,‘markersize‘,2);
axis equal;
axis image;
axis off;
set(gcf,‘Color‘,‘k‘);

M 数据

p 数据

展示代码

% M, p 数据已经存为文件 IFS_Mp.mat
load(‘IFS_Mp.mat‘);
IFS_draw(M,p);