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透過環境將 xticklabels 傳遞給 tikzpicture

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透過環境將 xticklabels 傳遞給 tikzpicture

我有一些圖表需要在文件中重複多次，並且略有變化，所以我想我應該創建一個環境來產生圖表並將變化作為選項傳遞。但是，我在傳遞 xticks 和 xticklabels 時遇到了麻煩，我認為因為它們是清單。

這是我的第一次嘗試，但無法編譯：

\documentclass{article}

\usepackage{pgfplots}
\usepackage{tikz}
\usepackage{environ}

\makeatletter
\newcommand{\@tikzexamplecommand}[2][]{%
  \pgfqkeys{/pgfplots}{remainingkeys/.style={}}%
  \pgfqkeys{/tikzangle}{%
    % save unknown keys in /pgfplots/remainingkeys; code from
    % http://tex.stackexchange.com/questions/22952/how-do-you-pass-unknown-keys-as-options-to-a-tikz-picture
    .unknown/.code={%
      \let\currname\pgfkeyscurrentname%
      \let\currval\pgfkeyscurrentvalue%
      \ifx#1\pgfkeysnovalue%
      \pgfqkeys{/pgfplots}{remainingkeys/.append style/.expand once={\currname}}%
      \else%
      \pgfqkeys{/pgfplots}{remainingkeys/.append style/.expand twice={\expandafter\currname\expandafter=\currval}}%
      \fi%
    },%
    #1}%
  % 
  \begin{tikzpicture}
    \begin{axis}[xticklabels=auto, /pgfplots/remainingkeys]
      \addplot+[domain=-10:10] {x};
      #2
    \end{axis}
  \end{tikzpicture}%
}

\NewEnviron{tikzexample}[1][]{\@tikzexamplecommand[#1]{\BODY}}
\makeatother

\begin{document}

\begin{tikzexample}[xtick={-5, 5}, xticklabels={$\alpha$, $\beta$}]
\end{tikzexample}

\end{document}

所以我想我應該在我的環境中創建 xtick 和 xticklabels 鍵並明確地傳遞它們：

\documentclass{article}

\usepackage{pgfplots}
\usepackage{tikz}
\usepackage{environ}

\makeatletter
\newcommand{\tikzexample@xtick}{auto}
\newcommand{\tikzexample@xticklabels}{auto}
\pgfkeys{/tikzangle/.cd,% to set the path
  xtick/.initial=auto,
  xtick/.store in=\tikzexample@xtick,
  xtick/.get=\tikzexample@xtick,
  xticklabels/.initial=auto,
  xticklabels/.store in=\tikzexample@xticklabels,
  xticklabels/.get=\tikzexample@xticklabels,
}

\newcommand{\@tikzexamplecommand}[2][]{%
  \pgfqkeys{/pgfplots}{remainingkeys/.style={}}%
  \pgfqkeys{/tikzangle}{%
    % save unknown keys in /pgfplots/remainingkeys; code from
    % http://tex.stackexchange.com/questions/22952/how-do-you-pass-unknown-keys-as-options-to-a-tikz-picture
    .unknown/.code={%
      \let\currname\pgfkeyscurrentname%
      \let\currval\pgfkeyscurrentvalue%
      \ifx#1\pgfkeysnovalue%
      \pgfqkeys{/pgfplots}{remainingkeys/.append style/.expand once={\currname}}%
      \else%
      \pgfqkeys{/pgfplots}{remainingkeys/.append style/.expand twice={\expandafter\currname\expandafter=\currval}}%
      \fi%
    },%
    #1}%
  % 
  \begin{tikzpicture}
    \begin{axis}[xtick=\tikzexample@xtick, xticklabels=\tikzexample@xticklabels, /pgfplots/remainingkeys]
      \addplot+[domain=-10:10] {x};
      #2
    \end{axis}
  \end{tikzpicture}%
}

\NewEnviron{tikzexample}[1][]{\@tikzexamplecommand[#1]{\BODY}}
\makeatother

\begin{document}
\begin{tikzexample}[xtick={-5, 5}, xticklabels={$\alpha$, $\beta$}]

\end{tikzexample}
\end{document}

這給了正確的 xticks，但 {$\alpha$, $\beta$} 被讀取為刻度標籤：

輸出

我該怎麼做才能將 xticklabels 正確傳遞到我的環境？

答案1

在深入研究 pgfplots 程式碼後，我想出了這個解決方案。我實際上不明白這是做什麼的，但添加以下鍵處理程式碼似乎可以工作：

  xticklabels/.code={%
    \pgfplotslistnew\tikzexample@xticklabels{#1}%
    \let\pgfplots@xticklabels=\tikzexample@xticklabels
    \let\pgfplots@xticklabel=\pgfplots@user@ticklabel@list@x    
  },

這是完整的範例：

\documentclass{article}

\usepackage{pgfplots}
\usepackage{tikz}
\usepackage{environ}

\makeatletter

\newcommand{\tikzexample@xtick}{auto}
\pgfkeys{/tikzexample/.cd,% to set the path
  xtick/.initial=auto,
  xtick/.store in=\tikzexample@xtick,
  xtick/.get=\tikzexample@xtick,
  xticklabels/.code={%
    \pgfplotslistnew\tikzexample@xticklabels{#1}%
    \let\pgfplots@xticklabels=\tikzexample@xticklabels
    \let\pgfplots@xticklabel=\pgfplots@user@ticklabel@list@x    
  },
}

\newcommand{\@tikzexamplecommand}[2][]{%
  \pgfqkeys{/pgfplots}{remainingkeys/.style={}}%
  \pgfqkeys{/tikzexample}{%
    % save unknown keys in /pgfplots/remainingkeys; code from
    % http://tex.stackexchange.com/questions/22952/how-do-you-pass-unknown-keys-as-options-to-a-tikz-picture
    .unknown/.code={%
      \let\currname\pgfkeyscurrentname%
      \let\currval\pgfkeyscurrentvalue%
      \ifx#1\pgfkeysnovalue%
      \pgfqkeys{/pgfplots}{remainingkeys/.append style/.expand once={\currname}}%
      \else%
      \pgfqkeys{/pgfplots}{remainingkeys/.append style/.expand twice={\expandafter\currname\expandafter=\currval}}%
      \fi%
    },%
    #1}%
  \begin{tikzpicture}
    \begin{axis}[xtick=\tikzexample@xtick, /pgfplots/remainingkeys]
      \addplot+[domain=-10:10] {x};
      #2
    \end{axis}
  \end{tikzpicture}%
}

\NewEnviron{tikzexample}[1][]{\@tikzexamplecommand[#1]{\BODY}}
\makeatother

\begin{document}
\begin{tikzexample}[xtick={-5, 5}, xticklabels={$\alpha$, $\beta$}]

\end{tikzexample}
\end{document}

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