AlgebraicJulia/Catlab.jl

Only show objects/homs in `to_graphviz` for schemas

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#966 opened on Apr 21, 2025

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Description

In schemas with many data attributes, sometimes it can be useful to toggle between showing all the attributes and attr types, and just the obs and homs, to get a clearer picture of the relations without being overwhelmed. I'll look into this and make a PR.

Contributor guide

Tech stack
None
Domain
developer experience
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
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
None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
The issue proposes adding an option to the `to graphviz` function in Catlab.jl to toggle between showing all attributes and types versus only objects and homs. To implement, one should locate the `to graphviz` function definition (likely in a file related to graphviz export, e.g., `src/graphviz.jl`), understand how it currently computes the graph, and add a keyword argument (e.g., `simple=true`) that filters out data attributes. The change is self contained and well scoped.