为什么我的 pgfplot 图表的第一个刻度和最后一个刻度有不同的宽度？

Question

我注意到，当我选择将图表的刻度线置于外部时，第一个和最后一个刻度线会变细。有人知道如何解决这个问题吗？这是我使用的代码。下面是生成的图表的屏幕截图。

\documentclass{article}

\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[sc]{mathpazo}
\usepackage{amsmath,amssymb,amsfonts,mathrsfs}
\usepackage[amsmath,thmmarks]{ntheorem}
\usepackage{graphicx}
\usepackage{multirow}
\usepackage{geometry}
\usepackage{booktabs,makecell,longtable}
\usepackage{lipsum}
\usepackage{pdfpages}
\usepackage{balance} 
\usepackage{lastpage}
\usepackage{amsmath,bm}
\usepackage{textcomp}
\usepackage{subeqnarray}
\usepackage{float}
\usepackage{mathtools}
\usepackage{cite}
\usepackage[export]{adjustbox}
\usepackage{etoolbox}
\usepackage{enumitem}
\usepackage{lmodern}
\usepackage[labelfont=bf,font=sf,labelsep=space]{caption}
\usepackage{mathpazo}
\usepackage[nottoc,notlot,notlof]{tocbibind}
\usepackage{pgfplots}
\usepackage{hyperref}
\usepackage{tikz}
\usetikzlibrary{tikzmark}

\pgfkeys{/pgf/number format/.cd,1000 sep={}}


\newcommand{\myfont}{\fontfamily{cmss}\selectfont}% used with mathpazo 

\DeclareMathOperator{\Tr}{Tr}

\setcounter{tocdepth}{2}

\pgfplotsset{compat=1.5.1}
\pgfplotsset{label style={font=\Large},
            tick label style={font=\Large}}

\pgfplotsset{error bars/.cd,
    x dir=both, x explicit,
    y dir=both, y explicit,
    }
\pgfplotsset{/pgfplots/error bars/error bar style={semithick,black}}
%\pgfplotsset{/pgfplots/label shift={0pt}}


\begin{document}


\begin{figure}
\centering

\begin{tikzpicture}
\begin{axis}[
    axis line style=semithick,
    width=9cm,
    height=7cm,
    only marks,
    %mark size=3pt,
    %legend image post style={mark options={scale=1.3,fill=white,line width=0.8pt}},
    legend style={at={(0.95,0.3)},draw=none},
    legend cell align={right},
    x tick style={black,semithick},
    x label/.style=
        {at={(ticklabel cs:0.5)},anchor=near ticklabel},
    xlabel={{$\epsilon_n$} [{\myfont -}]},
    xmin=0,xmax=1,
    xtick={0,0.5,...,1},
    xtick pos=bottom,
    %minor x tick num=1,
    xtick align=outside,
    %xminorgrids=true,
    every y tick/.style={black,semithick},
    y label style=
        {at={(ticklabel cs:0.5)},anchor=near ticklabel},
    ylabel={{$\sigma_n$} [{\myfont MPa}]},
    ymin=0,ymax=150,
    ytick={0,50,...,150},
    ytick pos=left,
    %minor y tick num=1,
    ytick align=outside,
    %yminorgrids=true,  
]
    \addplot [sharp plot,red,very thick,mark=*,mark options={scale=2,blue,fill=white}]
    coordinates{
    (0.2,40)
    (0.4,70)
    (0.6,100)
    (0.8,130)
};

\end{axis}
\end{tikzpicture}
\end{figure}


\end{document}

Answer 1

欢迎来到 TeX.SE！这是因为 50% 的外部刻度被剪掉了。如果你稍微扩大一点限制，这种效果就会消失。所以你可能想添加

enable tick line clipping=false

到你的选项axis。这是一个完整的 MWE，其中我剥离了不直接相关的包。

\documentclass[tikz,border=3.14mm]{standalone}
\usepackage{pgfplots}
\pgfkeys{/pgf/number format/.cd,1000 sep={}}

\newcommand{\myfont}{\fontfamily{cmss}\selectfont}% used with mathpazo 


\pgfplotsset{compat=1.5.1}
\pgfplotsset{label style={font=\Large},
            tick label style={font=\Large}}

\pgfplotsset{error bars/.cd,
    x dir=both, x explicit,
    y dir=both, y explicit,
    }
\pgfplotsset{/pgfplots/error bars/error bar style={semithick,black}}
%\pgfplotsset{/pgfplots/label shift={0pt}}


\begin{document}


\begin{tikzpicture}
\begin{axis}[enable tick line clipping=false,
    axis line style=semithick,
    width=9cm,
    height=7cm,
    only marks,
    %mark size=3pt,
    %legend image post style={mark options={scale=1.3,fill=white,line width=0.8pt}},
    legend style={at={(0.95,0.3)},draw=none},
    legend cell align={right},
    xtick align=outside,
    ytick align=outside,
    major x tick style={black,semithick},
    x label/.style=
        {at={(ticklabel cs:0.5)},anchor=near ticklabel},
    xlabel={{$\epsilon_n$} [{\myfont -}]},
    xmin=0,xmax=1,
    xtick={0,0.5,1},
    xtick pos=bottom,
    %minor x tick num=1,
    %xminorgrids=true,
    every y tick/.append style={black,semithick},
    y label style=
        {at={(ticklabel cs:0.5)},anchor=near ticklabel},
    ylabel={{$\sigma_n$} [{\myfont MPa}]},
    ymin=0,ymax=150,
    ytick={0,50,...,150},
    ytick pos=left,
    %minor y tick num=1,
    %yminorgrids=true,  
]
    \addplot [sharp plot,red,very thick,mark=*,mark options={scale=2,blue,fill=white}]
    coordinates{
    (0.2,40)
    (0.4,70)
    (0.6,100)
    (0.8,130)
};

\end{axis}
\end{tikzpicture}
\end{document}

另一个选择是使用enlargelimits={abs=0.4pt}。