Save data as attribute on fit objects

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#863 opened on Aug 24, 2026 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 5/5
Estimated time: Over a week
Newbie friendliness: 35/100

Issue type: Feature
Clarity: Needs clarification
Activity status: Active
Tech stack: python
Domain: backend

Research direction

Start by locating the fit-object construction paths, especially creation from files, and trace where input data is currently available. Clarify whether data should be retained on the fit object or only referenced, then define behavior for file-based fits and large inputs; done means the Arviz integration can access the intended data without unnecessary duplication.

Written by the indexing model from the issue text.

Description

feature

This was requested by @OriolAbril for better integration with Arviz. I think the main issue will be when we're creating a fit object from files, the data will no longer be around (unless we start saving it, which would fit with the ethos of #851 but could lead to unnecessary duplication of possibly-quite-large files)

Dominant language: Python
Stars: 198
Forks: 81
PR merge metrics: No merged PRs in 30d

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