how to convert 1D element into 2D element in a matirx?

hi, i need to find the location of elements in a matrix as (row,column) value. what function is used to get the row and column of a element?

[Azzi Abdelmalek]

Your title does not match the content of your question

[sheno39]

sir, i need to find the row,column value for each element in a matrix

Answer 1

[Azzi Abdelmalek]

Use find function

 doc find

Example

A=[1 2 3;4 5 6;7 8 9]
[ii,jj]=find(A)

Answer 2

[Andrei Bobrov]

A = [4   0   3   0
   4   4   4  -3
  -3  -3   2  -3
   5   0  -1   5]

s = size(A);
[irow,icol] = ndgrid(1:s(1),1:s(2));
out = [irow(:),icol(:),A(:)];

[sheno39]

I=[2 3 10 4 6; 1 4 7 5 3; 5 2 8 4 3;8 2 1 7 3;1 9 8 3 4;];
D = padarray(I,[1 1],0,'both');
[x y]=size(D);
m=1;
n=1;
for i=2:x-1
  for j=2:y-1
      A=[D(i-1,j-1:j+1),D(i,j-1),D(i,j+1),D(i+1,j-1:j+1)];
      I1(m,n)=max(A(:));
      %[maxval(m,n) index(m,n)]=max(A(:));
      n=n+1;
  end
  m=m+1;
  n=1;
end
[tc locatn]=ismember(I1,I);
s=[5,5];
[R C]=ind2sub(s,locatn');

Required output

locatn=[7 11 12 11 17;
      3 11 11 11 21;
      4  4 12 13 19;
      10 10 10 13 19;
      10 4  10 15 19]

i got the output as,

locatn=[7 11 12 11 3;
      3 11 11 11 21;
      4 4  12 4  12;
      10 10 10 4 12;
      10 4 10 4 12]

can u help me to get the required output? how to correct this code?

[Azzi Abdelmalek]

Can you explain, for example, why, for locatn(1,5) , it should be 17 and not 3

[Andrei Bobrov]

see here