I am a bit confused on the exercise about One Hot Encoding.

From my understanding:

- label = Class = the number of labels (cats, dogs, birds, etc) our Y(i)s can take. In the lecture example we had 4 labels (Cats, Dogs, Birds, None), so label = 4
- Depth is how many examples we have in our Y vector?

The terminology confused me a bit, and also it took me too much time to figure out how to use reshape, haha.

This is what I understood, did I get it right?