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更改 \addplot 表 {myfile} 的默认文件路径

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更改 \addplot 表 {myfile} 的默认文件路径

有没有办法将文件路径前缀（最好由键定义）添加到 的“参数”中\addplot table。例如

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{%
  table file path/.initial = {./}}
\begin{document}
\begin{tikzpicture}
  \begin{axis}
    \pgfplotsset{%
      table file path = {./cvsfile/}}
    % Plot ./cvsfile/myfile
    \addplot table {myfile};
  \end{axis}
\end{tikzpicture}
\end{document}

答案1

这似乎有效......

\documentclass{standalone}
\usepackage{pgfplots}


\makeatletter

\def\pgfplotstableread@openfile{%
    \def\pgfplotstable@loc@TMPa{\pgfutil@in@{ }}%
    \expandafter\pgfplotstable@loc@TMPa\expandafter{\pgfplotstableread@filename}%
    \ifpgfutil@in@
        \t@pgfplots@toka=\expandafter{\pgfplotstableread@filename}%
        \edef\pgfplotstableread@filename{\pgfplots@dquote\the\t@pgfplots@toka\pgfplots@dquote}%
    \fi
    \let\pgfplotstableread@old@crcr=\\%
    \def\\{\string\\}% just to make sure we don't try to open inline table data...
    \openin\r@pgfplots@reada=\csname pgfk@/pgfplots/table file path\endcsname\[email protected]
    \ifeof\r@pgfplots@reada
        \openin\r@pgfplots@reada=\csname pgfk@/pgfplots/table file path\endcsname\pgfplotstableread@filename\relax
    \else
        \pgfplots@warning{%
            You requested to open table '\pgfplotstableread@filename', but there is also a '\[email protected]'. 
            TeX will automatically append the suffix '.tex', so I will now open '\[email protected]'.
            Please make sure you don't accidentally load TeX files - this may produce unrecoverable errors.}%
        \closein\r@pgfplots@reada
        \openin\r@pgfplots@reada=\pgfplotstableread@filename\relax
    \fi
    %
    \ifeof\r@pgfplots@reada
        \pgfplotsthrow{no such table file}{\pgfplots@loc@TMPa}{\pgfplotstableread@filename}{Could not read table file '\csname pgfk@/pgfplots/table file path\endcsname\pgfplotstableread@filename'. In case you intended to provide inline data: maybe TeX screwed up your end-of-lines? Try `row sep=crcr' and terminate your lines with `\string\\' (refer to the pgfplotstable manual for details)}\pgfeov%
        \global\let\pgfplotstable@colnames@glob=\pgfplots@loc@TMPa
        \def\pgfplotstableread@ready{0}%
    \fi
    \pgfplots@logfileopen{\pgfplotstableread@filename}%
    \let\\=\pgfplotstableread@old@crcr
}

\makeatother

\pgfplotsset{%
  table file path/.initial = {./}}
\begin{document}
\begin{tikzpicture}
  \begin{axis}
  \pgfplotsset{%
      table file path = {./cvsfile/}
  }
    % Plot ./cvsfile/myfile
    \addplot table {myfile2.txt};
  \end{axis}
\end{tikzpicture}
\end{document}

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