JuliaPlots/Plots.jl

[FR] Make it easier to have custom labels for levels in contour plot

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#4,531 opened on Nov 21, 2022

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enhancementextensionhelp wanted

Description

Relevant discourse thread. Goal is to achieve feature parity with matplotlib, as seen here and here with:

  • Manual placements of contour labels
  • Custom level formatters (e.g. percentages, %.4f, strings)

without having to deal directly with the backend.

Contributor guide

Tech stack
None
Domain
datadesign
Issue type
feature
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Plots.jl basicsContour plot concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Review the discourse thread for community suggestions. Examine the Plots.jl source code, particularly the contour implementation, to understand how levels and labels are currently set. Look at matplotlib's contour label demo for reference. Identify where custom formatters and manual placements need to be added.