Find zero crossings in multidimensional matrix

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Nate
Nate 2018-9-26
评论： Bish Erbas 2018-9-26
Hello,
I have a multidimensional (5-D) matrix that is a sparse sampling of a smooth function. I would like to interpolate to find the coordinates where the matrix is zero. Does anyone know a way to do this?
Thank you Nate

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Bish Erbas
Bish Erbas 2018-9-26
Code below finds all zero elements of the example 2x2x5 matrix.
B = repmat([0 1],[2 2 5]);
B(B==0)
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Nate
Nate 2018-9-26
Guillaume is correct. However, my matrix isn't sparse though (bad choice of words on my part).

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