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

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sheno39
sheno39 2013-10-17
评论： Andrei Bobrov 2013-10-18
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?

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Azzi Abdelmalek
Azzi Abdelmalek 2013-10-17
编辑：Azzi Abdelmalek 2013-10-17
Use find function
doc find
Example
A=[1 2 3;4 5 6;7 8 9]
[ii,jj]=find(A)

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Andrei Bobrov
Andrei Bobrov 2013-10-17
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(:)];
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Azzi Abdelmalek
Azzi Abdelmalek 2013-10-18
Can you explain, for example, why, for locatn(1,5) , it should be 17 and not 3

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