a2 = cnp.PyArray_SimpleNewFromData(2, [2, 5], cnp.NPY_FLOAT64, a1)
a3 = cnp.PyArray_SimpleNewFromData(2, [5, 2], cnp.NPY_FLOAT64, a1).T
a2[0, 0] = 10.0
Have pointer to data. Need Numpy array in Fortran order. Want to use Cython