Avoid bigarray access operator for portability
Avoid bigarray access operator for portability

Error was:
This expression has type Owl.Mat.mat = (float, Bigarray.float64_elt,
Bigarray.c_layout) Bigarray.Genarray.t but an expression was expe cted
of type ('a, 'b, 'c) Batteries.Bigarray.Array2.t = ('a, 'b, 'c)
Bigarray.Array2.t

PerformanceVision/ramen,PerformanceVision/ramen