astronomy-commons/lsdb

Use pretty angle for margins in LSDB

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#921 opened on Jul 16, 2025

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good first issue

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Description

There's logic in the collection arguments from hats-import (_pretty_print_angle) that handles scaling margin thresholds to other units. It would be nice to abstract that into hats and use it when creating margins in LSDB.

Originally posted by @delucchi-cmu in https://github.com/astronomy-commons/lsdb/pull/913#discussion_r2208496797

Contributor guide

Research direction
Review the PR discussion referenced in the issue, locate the ` pretty print angle` function in the hats import codebase, understand how it scales margin angles, then abstract it into the hats library and update LSDB to use it when creating margins. Add tests to verify the behavior.
Tech stack
python
Domain
backenddata
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PythonGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70