How to find location/coordinates of NaN in a sort condition?

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Isti 2012-4-27

I have a matrix like this:

   2     3     6     2
   4   NaN     4     2
   NaN     3     2     4     3
   2   NaN     9     3
   1     8     2     4

So the location/coordinates NaN that will be out in a sort condition is(2,3),(3,1), and(4,3).

I've already try this code:

[I,J] = find(isnan(Data));

but the value does't well organized. is the any solution? thanks before :')

Andrei Bobrov 2012-4-27

[ii jj] = find(isnan(Data));
outij = sortrows([ii jj],1);

[jj ii] = find(isnan(Data.'))

Jan 2012-4-27

Matrices are store in column order in Matlab. Therefore the output of FIND *is* well organized, but not in the order you expect.

Isti 2012-4-28

thanks :)

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