Convert array of string (category) to array of int from a pandas dataframe

Question

I am trying to do something very similar to that previous question but I get an error. I have a pandas dataframe containing features,label I need to do some convertion to se

Answer 1

because none of these work for dimensions>1, I made some code working for any numpy array dimensionality:

def encode_categorical(array):
    d = {key: value for (key, value) in zip(np.unique(array), np.arange(len(u)))}
    shape = array.shape
    array = array.ravel()
    new_array = np.zeros(array.shape, dtype=np.int)
    for i in range(len(array)):
        new_array[i] = d[array[i]]
    return new_array.reshape(shape)