- To: mathgroup at smc.vnet.net
- Subject: [mg8642] two-way lists
- From: sch at mitre.org (Stu Schaffner)
- Date: Fri, 12 Sep 1997 04:10:55 -0400
- Organization: The MITRE Corp.
- Sender: owner-wri-mathgroup at wolfram.com
While working with wavelets and signal processing algorithms, I have often had to consider sequences where the index set is all of the integers, not just the positive integers. Sometimes these sequences are symmetric or antisymmetric, sometimes not. Sometimes the support is a small range of indices, sometimes the support is scattered. Other cases will arise, I am certain, in the future. In order to avoid building too many specific implementation forms into programs that use these sequences, I built a package to support "centered sequences" as an abstract data type. This package just grew over the past year or two as I added features I needed. Now it is big enough to warrant a second look. I could just let it continue to grow as needed, without spending much time on it. Alternatively, if anybody has a better package or even a better approach to the problem, perhaps I should replace mine with that. Does anybody have a better alternative? If not, would anybody be interested in having me clean it up and post it to MathSource? Stu Schaffner, not doing any of this for The MITRE Corp. stusch at tiac.net