How to calculate wind direction from U and V wind components in R

Question

I have U and V wind component data and I would like to calculate wind direction from these values in R.

I would like to end up with wind direction data on a scale o

Answer 1

In Python:

Dir=np.mod(180+np.rad2deg(np.arctan2(U, V)),360)

This leads to a Southerly wind (180 degrees) for a [0,1] vector, a Northerly wind (0 degrees) for a [0,-1] vector, a South Westerly wind (225 degrees) for a [1,1] vector:

U
Out[86]: 
array([[ 0.  ],
       [ 0.  ],
       [ 1.  ],
       [-3.47]])

V
Out[87]: 
array([[ 1.  ],
       [-1.  ],
       [ 1.  ],
       [-1.47]])

np.mod(180+np.rad2deg(np.arctan2(U, V)),360)
Out[89]: 
array([[180.        ],
       [  0.        ],
       [225.        ],
       [ 67.04097233]])