Functions for rolling xarray DataArray along its longitudinal axis

roll_xarray_longitude.py

def roll_da_to0360(da, lon_name='longitude'):
    """Roll DataArray's data with longitudes from (-180, 180) to (0, 360)."""
    # Roll longitudes and corresponding data
    out = da.roll(longitude=da[lon_name].shape[0]//2, roll_coords=True)
    # Reset western (negative) longitudes to values within (180, 360) range
    out[lon_name] = out[lon_name] - (out[lon_name] // 360) * 360
    return out