Hi Roger, My comments below, below yours.
On Thu, Oct 04, 2018 at 12:02:01PM -0700, Roger Lea Scherer wrote: [...] > 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. You can copy and paste text to avoid extra typing. You seem to be are thinking along the lines of axles in a car, where the two axles run parallel: Axle one: --------- Axle two: --------- You should think of axes of a graph, which run perpendicular to each other, like the lines of a plus sign + or cross. So the array: [[ 1., 0., 0.], [ 0., 1., 2.]] is two dimensional, with 2 rows and 3 columns. In mathematics, we would call it a 2x3 matrix; in programming, it would be a 2x3 array. Axis one (rows): length 2 Axis two (columns): length 3 Regards, -- Steve _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor