[Tutor] Numpy documentation

Roger Lea Scherer rls4jc at gmail.com
Thu Oct 4 15:02:01 EDT 2018

I truly don't think I'm this stupid, but I can't even understand the fourth
paragraph of the numpy documentation.
https://docs.scipy.org/doc/numpy/user/quickstart.html says:

 In the example pictured below, the array has 2 axes. The first axis has a
length of 2, the second axis has a length of 3.
[[ 1., 0., 0.],
 [ 0., 1., 2.]]

(I think) I understand the 2 axes. [1,0,0] (I'm lazy and don't want to type
the periods) is one axis and [0,1,2] is the second axis. But then things
get goofy. The first axis has a length of 2. Is that because [1,0,0] and
[0,1,2] are counted as one axis? (I think) I understand the second axis has
a length of 3 because there are 3 elements within the [0,1,2] axis. Is that
correct? But why does the first axis have a length of 2? Because the second
zero doesn't count? Did they change the example and forgot to change the

Thank you for your help as always.

Roger Lea Scherer

   Input, Strategic,

Learner, Ideation

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