JuliaPlots/Plots.jl

[BUG] pfgplotsx cannot handle ranges of rational numbers

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#2,871 opened on Jul 21, 2020

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PGFPlotsXbuggood first issuewontfix

Description

The backend pfgplotsx does not seem to work with ranges of rational numbers (but it works with vectors of rational numbers).

using Plots
pgfplotsx()
ts = range(0, 1, step = 1//10)
plot(ts, ts)
# ERROR: The latex command `lualatex jl_NQkAg4.tex` failed
plot(collect(ts), collect(ts))
# works

Contributor guide

Tech stack
None
Domain
backend
Issue type
bug
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.
half day
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
basic Juliafamiliarity with Plots.jl
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate how the pgfplotsx backend handles ranges of rational numbers by looking at the backend source code. Compare the code paths for iterating over a range versus a collected vector. The error suggests a type conversion issue when passing a rational range to the LaTeX generation. Look for any missing method or fallback for Rational{Int} ranges.
[BUG] pfgplotsx cannot handle ranges of rational numbers · JuliaPlots/Plots.jl#2871 | Good First Issue