Can't find functions finding the maximum and minimum values and indices of the entire matrix

[AurusHuang]

I need an elegant method to find the maximum and minimum values and indices of the entire matrix, like the following:

xtensor<double, 3> mat_max;
// omitted: assigning values
double max_val=xt::Max(mat_max);
xarray<double, 3> max_idx=xt::Max_idx(mat_max);

Currently, there is argmax, but it gives flattened index instead of "unravelled" indices. Seems a foolish question but I really get nothing as much as I can find.

1013 seems providing an answer but not exactly what I want.

[tdegeus]

You should just use the unravel_index function as indicated, but I guess that you are right that this is different in NumPy.

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