Question

Matlab中多维数组的意义？

clear;
N=12;i=1:N;
hs(i)=sin(2*pi*i/N);
hc(i)=cos(2*pi*i/N);
for p=1:((N/2)+1)*10;
for k=1:N+N/2;
for i=1:4;
a(i)=pi*(i-1)/6;
y(:,:,i)=sin(a(i)+(2*pi/N)*(k-1)*(p-1)/10);
end
s(:,k,:)=y;
end
w(p,:,:)=s;
end

中的
y(:,:,i)=sin(a(i)+(2*pi/N)*(k-1)*(p-1)/10);
s(:,k,:)=y;
w(p,:,:)=s;

这些语句是什么意思呢？

Answer 1

y(:,:,i)=sin(a(i)+(2*pi/N)*(k-1)*(p-1)/10);
s(:,k,:)=y;
w(p,:,:)=s;
等价于
y(i)=sin(a(i)+(2*pi/N)*(k-1)*(p-1)/10);%y是1×4的向量
s(:,k)=y;%s是4×（N+N/2）的矩阵
w(p,:,:)=s;%w是〔((N/2)+1)*10〕×4×（N+N/2）的矩阵;