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TikZ 轴环境中的扭曲圆圈

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TikZ 轴环境中的扭曲圆圈

使用全新安装的 TeX Live（在撰写本文之前更新）时，axis环境中的圆圈会变形。考虑以下 MWE：

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
  ymin=-3, ymax=3,
  xmin=-3, xmax=3
]

\draw (1,0) circle [radius=1.5];
\fill (1,0) circle [radius=1];

\end{axis}
\end{tikzpicture}

\end{document}

输出如下所示： 扭曲的圆圈

显然，这些圆圈根本不是圆圈。我以前没有遇到过这个问题。我在设置新系统时做错了什么吗？

编辑：这不是使用axis equal与否的问题，因为轴的缩放比例已经大致相等。相反，圆显示为旋转的椭圆，在一个维度上被严重拉伸。

编辑2：这是 \listfiles 的输出：

article.cls    2019/12/20 v1.4l Standard LaTeX document class
  size10.clo    2019/12/20 v1.4l Standard LaTeX file (size option)
pgfplots.sty    2018/03/28 v1.16 Data Visualization (1.16)
graphicx.sty    2019/11/30 v1.2a Enhanced LaTeX Graphics (DPC,SPQR)
  keyval.sty    2014/10/28 v1.15 key=value parser (DPC)
graphics.sty    2019/11/30 v1.4a Standard LaTeX Graphics (DPC,SPQR)
    trig.sty    2016/01/03 v1.10 sin cos tan (DPC)
graphics.cfg    2016/06/04 v1.11 sample graphics configuration
  pdftex.def    2018/01/08 v1.0l Graphics/color driver for pdftex
    tikz.sty    2020/01/08 v3.1.5b (3.1.5b)
     pgf.sty    2020/01/08 v3.1.5b (3.1.5b)
  pgfrcs.sty    2020/01/08 v3.1.5b (3.1.5b)
everyshi.sty    2001/05/15 v3.00 EveryShipout Package (MS)
pgfrcs.code.tex
 pgfcore.sty    2020/01/08 v3.1.5b (3.1.5b)
  pgfsys.sty    2020/01/08 v3.1.5b (3.1.5b)
pgfsys.code.tex
pgfsyssoftpath.code.tex    2020/01/08 v3.1.5b (3.1.5b)
pgfsysprotocol.code.tex    2020/01/08 v3.1.5b (3.1.5b)
  xcolor.sty    2016/05/11 v2.12 LaTeX color extensions (UK)
   color.cfg    2016/01/02 v1.6 sample color configuration
pgfcore.code.tex
pgfcomp-version-0-65.sty    2020/01/08 v3.1.5b (3.1.5b)
pgfcomp-version-1-18.sty    2020/01/08 v3.1.5b (3.1.5b)
  pgffor.sty    2020/01/08 v3.1.5b (3.1.5b)
 pgfkeys.sty
pgfkeys.code.tex
 pgfmath.sty    
pgfmath.code.tex
pgffor.code.tex
tikz.code.tex
l3backend-pdfmode.def    2020-02-03 L3 backend support: PDF mode
supp-pdf.mkii
epstopdf-base.sty    2020-01-24 v2.11 Base part for package epstopdf
epstopdf-sys.cfg    2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live

答案1

pgfplots使用未记录的内部 TikZ 命令，这些命令最近已发生更改。维护人员向我承诺会修复此问题，但目前还没有任何进展。

https://sourceforge.net/p/pgfplots/bugs/232/

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}

\makeatletter
\def\pgfplots@install@path@replacements{%
    \ifpgfplots@path@replace@ellipse
        \let\tikz@do@circle=\pgfplots@path@@tikz@do@circle
        \let\tikz@do@ellipse=\pgfplots@path@@tikz@do@circle
        \expandafter\def\expandafter\pgfinterruptpicture\expandafter{\pgfinterruptpicture
            \let\tikz@do@circle=\pgfplots@path@@tikz@do@circle@orig
            \let\tikz@do@ellipse=\pgfplots@path@@tikz@do@ellipse@orig
        }%
    \fi
}%
\let\pgfplots@path@@tikz@do@circle@orig=\tikz@do@circle
\let\pgfplots@path@@tikz@do@ellipse@orig=\tikz@do@ellipse

\let\pgfplots@path@@tikz@do@circle@oldandbroken=\pgfplots@path@@tikz@do@circle
\def\pgfplots@path@@tikz@do@circle#1{\pgfplots@path@@tikz@do@circle@oldandbroken{#1}{#1}}
\def\pgfplots@path@@tikz@do@ellipse#1#2{\pgfplots@path@@tikz@do@circle@oldandbroken{#1}{#2}}
\makeatother

\begin{document}

\begin{tikzpicture}
\begin{axis}[
  ymin=-3, ymax=3,
  xmin=-3, xmax=3
]

\draw (1,0) circle [radius=1.5];
\fill (1,0) circle [radius=1];

\end{axis}
\end{tikzpicture}

\end{document}

答案2

您需要使用axis equal。如果两个轴上的 1 个单位的值不相等，则生成的图像将不是圆形。

下面第一张图是原图，第二张是axis equal应用的：

在此处输入图片描述

代码：

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
  ymin=-3, ymax=3,
  xmin=-3, xmax=3,
]

\draw (1,0) circle [radius=1.5];
\fill (1,0) circle [radius=1];

\end{axis}
\end{tikzpicture}
\begin{tikzpicture}
\begin{axis}[
  ymin=-3, ymax=3,
  xmin=-3, xmax=3,
  axis equal,
]

\draw (1,0) circle [radius=1.5];
\fill (1,0) circle [radius=1];

\end{axis}
\end{tikzpicture}

列表文件

 article.cls    2019/10/25 v1.4k Standard LaTeX document class
  size10.clo    2019/10/25 v1.4k Standard LaTeX file (size option)
pgfplots.sty    2018/03/28 v1.16 Data Visualization (1.16)
graphicx.sty    2017/06/01 v1.1a Enhanced LaTeX Graphics (DPC,SPQR)
  keyval.sty    2014/10/28 v1.15 key=value parser (DPC)
graphics.sty    2019/11/01 v1.3d Standard LaTeX Graphics (DPC,SPQR)
    trig.sty    2016/01/03 v1.10 sin cos tan (DPC)
graphics.cfg    2016/06/04 v1.11 sample graphics configuration
  pdftex.def    2018/01/08 v1.0l Graphics/color driver for pdftex
    tikz.sty    2019/08/03 v3.1.4b (3.1.4b)
     pgf.sty    2019/08/03 v3.1.4b (3.1.4b)
  pgfrcs.sty    2019/08/03 v3.1.4b (3.1.4b)
everyshi.sty    2001/05/15 v3.00 EveryShipout Package (MS)
pgfrcs.code.tex
 pgfcore.sty    2019/08/03 v3.1.4b (3.1.4b)
  pgfsys.sty    2019/08/03 v3.1.4b (3.1.4b)
pgfsys.code.tex
pgfsyssoftpath.code.tex    2019/08/03 v3.1.4b (3.1.4b)
pgfsysprotocol.code.tex    2019/08/03 v3.1.4b (3.1.4b)
  xcolor.sty    2016/05/11 v2.12 LaTeX color extensions (UK)
   color.cfg    2016/01/02 v1.6 sample color configuration
pgfcore.code.tex
pgfcomp-version-0-65.sty    2019/08/03 v3.1.4b (3.1.4b)
pgfcomp-version-1-18.sty    2019/08/03 v3.1.4b (3.1.4b)
  pgffor.sty    2019/08/03 v3.1.4b (3.1.4b)
 pgfkeys.sty    
pgfkeys.code.tex
 pgfmath.sty    
pgfmath.code.tex
pgffor.code.tex
tikz.code.tex
supp-pdf.mkii
epstopdf-base.sty    2016/05/15 v2.6 Base part for package epstopdf
infwarerr.sty    2016/05/16 v1.4 Providing info/warning/error messages (HO)
  grfext.sty    2016/05/16 v1.2 Manage graphics extensions (HO)
kvdefinekeys.sty    2016/05/16 v1.4 Define keys (HO)
 ltxcmds.sty    2016/05/16 v1.23 LaTeX kernel commands for general use (HO)
kvoptions.sty    2016/05/16 v3.12 Key value format for package options (HO)
kvsetkeys.sty    2016/05/16 v1.17 Key value parser (HO)
etexcmds.sty    2016/05/16 v1.6 Avoid name clashes with e-TeX commands (HO)
ifluatex.sty    2019/10/25 v1.5 ifluatex legacy package. Use iftex instead.
   iftex.sty    2019/11/07 v1.0c TeX engine tests
pdftexcmds.sty    2019/07/25 v0.30 Utility functions of pdfTeX for LuaTeX (HO)
   ifpdf.sty    2019/10/25 v3.4 ifpdf legacy package. Use iftex instead.
epstopdf-sys.cfg    2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live

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