Datasets:
Formats:
parquet
Size:
100K - 1M
Tags:
population-genetics
demographic-inference
effective-population-size
coalescent
msprime
simulation
License:
| """Where the simulator's own data lives, and how to find it. | |
| Three modules resolved paths independently before this one existed, with two | |
| near-identical private helpers and one module -- the stdpopsim catalogue -- | |
| that had neither. That third one failed silently: run from any directory other | |
| than the repository root it found no templates at all and reported an empty | |
| catalogue rather than an error, so the eighteen held-out cross-species models | |
| simply were not there. | |
| Everything the simulator needs to run ships inside the package, so a path is | |
| resolved against the package first and the working directory second. That | |
| order is what makes an installed copy work from anywhere; the reverse order | |
| would let a stray directory name shadow the shipped data. | |
| """ | |
| from __future__ import annotations | |
| from pathlib import Path | |
| # The directory this package's data lives in. Kept as one constant so a move | |
| # is one edit rather than a search. | |
| ASSET_ROOT = Path(__file__).resolve().parent / "assets" | |
| def asset_path(relative: str) -> Path: | |
| """Resolve a configured path to a file or directory that exists. | |
| Absolute paths and paths that exist relative to the working directory are | |
| taken as given -- a caller pointing at their own map file means it. A | |
| relative path that does not exist there is looked up inside the package, | |
| which is where the shipped maps and templates are. If neither resolves the | |
| original is returned unchanged, so the caller reports the path the user | |
| actually asked for rather than one this function invented. | |
| """ | |
| if not relative: | |
| return Path("") | |
| candidate = Path(relative).expanduser() | |
| if candidate.is_absolute(): | |
| return candidate | |
| if candidate.exists(): | |
| return candidate | |
| packaged = ASSET_ROOT / candidate | |
| if packaged.exists(): | |
| return packaged | |
| # Legacy layout: assets used to sit at the repository root. | |
| repository = Path(__file__).resolve().parents[1] / candidate | |
| if repository.exists(): | |
| return repository | |
| return candidate | |