Opened 4 years ago
Closed 4 years ago
#22400 closed enhancement (fixed)
Transpose text databases of reflexive polytopes for PALP
| Reported by: | novoselt | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | sage-7.6 |
| Component: | packages: standard | Keywords: | |
| Cc: | vbraun | Merged in: | |
| Authors: | Andrey Novoseltsev | Reviewers: | Volker Braun |
| Report Upstream: | N/A | Work issues: | |
| Branch: | f42ea43 (Commits, GitHub, GitLab) | Commit: | f42ea43a88329352349c8b7b6831afccc658ec92 |
| Dependencies: | Stopgaps: |
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Description
We store reflexive polytopes in 2 and 3 dimensions as text files. The current version lists points as columns of matrices, but the default output for PALP is reversed and it gives cleaner code not handle two cases. The main point, however, is that it would be faster to construct reflexive polytopes lists in memory if files were written point by point.
The current code in Sage will accept both old and new versions of the database, while the new one I am (re)writing will work only with the new one.
There is also a comment in SPKG.txt (exactly five years old) that text files will be removed in favour of the also included binary ones. However this didn't happen yet and I think it makes sense to keep small lists in plain form which is so easy to parse directly in Python without relying on any database modules or PALP itself for that matter.
Attachments (1)
Change History (5)
Changed 4 years ago by
comment:1 Changed 4 years ago by
- Branch set to u/novoselt/transpose_lattice_polytopes
comment:2 Changed 4 years ago by
- Commit set to f42ea43a88329352349c8b7b6831afccc658ec92
- Status changed from new to needs_review
comment:3 Changed 4 years ago by
- Reviewers set to Volker Braun
- Status changed from needs_review to positive_review
comment:4 Changed 4 years ago by
- Branch changed from u/novoselt/transpose_lattice_polytopes to f42ea43a88329352349c8b7b6831afccc658ec92
- Resolution set to fixed
- Status changed from positive_review to closed
New commits:
Transpose databases of small reflexive polytopes