CODEWITHSUNDEEP
matlab
Spandyie
Spandyie

Reputation: 945

Vector Operation in Matlab?

Can any body help me explain Line 7 of this code. What does this line 

temp(min(temp,[],2) >=1 & max(temp,[],2)<=N,:)

do in the code?

Line 7 of this code is throwing me off

 N=10;
 H=-1;
 J=0;
 for i=1:N
     for j=1:N
         temp=[i-1,j;i+1,j;i,j-1;i,j+1];
         ngh{i,j}=temp(min(temp,[],2) >=1 & max(temp,[],2)<=N,:);
     end
 end

Upvotes: 0

Views: 50

Answers (1)

Luis Mendo
Luis Mendo

Reputation: 112769

That line is selecting the rows of temp which have all values between 1 and N, and assigning that submatrix to ngh{i,j}.

Note that

  • min(...,[],2) or max(...,[],2) gives the minimum or maximum of each row;
  • The logical comparison with 1 or N and the & operation result in a logical index vector, which is used to address the desired rows of temp (and all columns).

Upvotes: 3

Related Questions