Hello!

I wonder what is the best way to:

- initialize a new DMatrix with all zeros, I used DMatrix::from_element(theta_axis_size as usize, rho_axis_size as usize, 0) but maybe there is a way with the Zero trait that I couldn’t find from the source code
- find the max/min element of a DMatrix? Currently i get the data as vector and then use iter().min() but maybe there is another way how the library allows for that

Thanks!