comments
Jeffrey Mark Siskind
(24 Apr 2020 18:59 UTC)
|
Re: comments
Jeffrey Mark Siskind
(24 Apr 2020 19:53 UTC)
|
Re: comments
Bradley Lucier
(17 May 2020 21:40 UTC)
|
Re: comments
Jeffrey Mark Siskind
(24 Apr 2020 19:54 UTC)
|
Re: comments
John Cowan
(24 Apr 2020 21:13 UTC)
|
Re: comments
Bradley Lucier
(25 Apr 2020 23:34 UTC)
|
Re: comments
Bradley Lucier
(26 Apr 2020 00:09 UTC)
|
Re: comments
John Cowan
(26 Apr 2020 03:46 UTC)
|
Re: comments Bradley Lucier (28 Apr 2020 20:03 UTC)
|
Re: comments
Bradley Lucier
(26 Apr 2020 22:11 UTC)
|
Re: comments Bradley Lucier 28 Apr 2020 20:03 UTC
On 4/25/20 11:46 PM, John Cowan wrote: > Stride is another form of limited affine transformation. A simple case > is a vector of 100 elements with a stride of 2, which makes it a vector > of 50 elements (just the even elements). As another example, an 8 x 8 > vector with a stride of 9 comes out as a diagonal vector. Some strides don't lead to an affine transform, e.g., a stride of 2 on an 5 x 5 array chooses elements in a checkerboard pattern, which isn't affine. So it seems that strides and displacements are just different from affine transformations on the domains of arrays. Interesting. Brad