JuliaPlots/Plots.jl

[BUG] legend entry for empty series on pgfplotsx

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#2,795 opened on Jun 17, 2020

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PGFPlotsXbuggood first issuewontfix

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Description

Details

plot([],[], label="hello")

can sometimes be useful to add a legend-entry without adding to the plot. It works on other backends, but not on pgfplotsx. Instead, nothing is plotted and no legend entry is added.

Just wanted to report. It's inconsistent but easily circumvented.

Thanks for your work!

Backends

This bug occurs on ( insert x below )

Backend yes no untested
gr (default) x
pyplot
plotly
plotlyjs
pgfplotsx x
inspectdr

Versions

Plots.jl version: 1.4.1 Backend version (]st -m): Output of versioninfo():

Contributor guide

Research direction
Investigate the pgfplotsx backend code to understand why legend entries for empty series are not rendered, and check how other backends handle this case for consistency.
Tech stack
julia
Domain
data visualization
Issue type
Bug
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.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Julia
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65