pgfplots 圖例順序

Question

以下程式碼繪製帶有數字標籤的長條圖。我希望圖例中的條目是相反的，即頂部有一個帶有標籤“二”的灰色框，下面有一個帶有標籤“一”的白色框。我怎樣才能做到這一點？我很可能會遺漏一些明顯的東西。編輯：繼續閱讀使用 pgfplots 1.14 的版本

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.3}
\begin{document}
  \begin{tikzpicture}
  \begin{axis}[
    ybar stacked,
    symbolic x coords={A,B,C},
    xtick=data,
    xticklabel style={align=center},
    nodes near coords={\pgfmathprintnumber\pgfplotspointmeta},
    nodes near coords align={vertical},
    nodes near coords align={anchor=north},%Move values in bar
    totals/.style={nodes near coords align={anchor=south}},
]
  \addplot [fill=white] coordinates {
({A},24)
({B},16)
({C},11)}; 
\addlegendentry{one}
 \addplot [fill=lightgray,point meta=explicit] coordinates {
({A},53)[53]
({B},47)[47]
({C},33)[33]};
\addlegendentry{two}
  \addplot[totals] coordinates {
({A},0)
({B},0)
({C},0)};
\legend{one,two}
  \end{axis}
  \end{tikzpicture}
\end{document}

編輯：對於後來出現的任何人，以下程式碼的佈局幾乎與我原來的帖子相同，但與 pgfplots 版本 1.14 相容（請參閱tex.stackexchange.com/a/162389/95441）。我已經採納了reverse legend傑克的建議，它解決了我原來的問題。

\documentclass[border=5mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.14}
\begin{document}
  \begin{tikzpicture}
  \pgfplotsset{
    show sum on top/.style={
          /pgfplots/scatter/@post marker code/.append code={%
              \node[
                  at={(normalized axis cs:%
                          \pgfkeysvalueof{/data point/x},%
                          \pgfkeysvalueof{/data point/y})%
                  },
                  anchor=south,
              ]
              {\pgfmathprintnumber{\pgfkeysvalueof{/data point/y}}};
          },
      },
  }
  \begin{axis}[
    reverse legend,
    ybar stacked,
    ymin=0,
    ymax=90,
    symbolic x coords={A,B,C},
    xtick=data,
    xticklabel style={align=center},
    nodes near coords={\pgfmathprintnumber\pgfplotspointmeta},
   ]
   \addplot [fill=white] coordinates {
      ({A},24)
      ({B},16)
      ({C},11)};
   \addlegendentry{one}
   \addplot [fill=lightgray,show sum on top] coordinates {
      ({A},53)
      ({B},47)
      ({C},33)};
   \addlegendentry{two}
   \legend{one,two}
  \end{axis}
  \end{tikzpicture}
\end{document}

Answer 1

reverse legend在 中設置axis options，並添加forget plot到那些\addplot您不想出現在圖例中的命令。另外，您只需要這兩個\addlegendentry命令或該\legend命令，但不需要同時使用這兩個命令。

\documentclass{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.3}
\begin{document}
  \begin{tikzpicture}
  \begin{axis}[
    ybar stacked,
    reverse legend,
    symbolic x coords={A,B,C},
    xtick=data,
    xticklabel style={align=center},
    nodes near coords={\pgfmathprintnumber\pgfplotspointmeta},
    nodes near coords align={vertical},
    nodes near coords align={anchor=north},%Move values in bar
    totals/.style={nodes near coords align={anchor=south}},
]
  \addplot [fill=white] coordinates {
({A},24)
({B},16)
({C},11)}; 
\addlegendentry{one}
 \addplot [fill=lightgray,point meta=explicit] coordinates {
({A},53)[53]
({B},47)[47]
({C},33)[33]};
\addlegendentry{two}
  \addplot[totals, forget plot] coordinates {
({A},0)
({B},0)
({C},0)};
  \end{axis}
  \end{tikzpicture}
\end{document}

Answer 2

正如傑克已經說過的那樣他的回答另一種方法是使用該\legend命令。這樣做的優點是不需要forget plot在命令上使用\addplot，除了不將圖添加到圖例之外，還有一些其他（可能/有時不需要的）“副作用”，例如不推進cycle list.

要使用命令忽略\addplots \legend，只需為它們寫入空標籤即可。

（順便說一句：當同時給出ie\addlegendentry和時， 「獲勝」。）\legend\legend

\documentclass[border=5pt]{standalone}
\usepackage{pgfplots}
    \pgfplotsset{compat=1.3}
\begin{document}
    \begin{tikzpicture}
        \begin{axis}[
            ybar stacked,
            reverse legend,
            symbolic x coords={A,B,C},
            xtick=data,
            nodes near coords,
            nodes near coords align={anchor=north},%Move values in bar
            totals/.style={
                nodes near coords align={anchor=south},
                red,        % <-- added, to distinguish it from "one"
            },
        ]
            \addplot [fill=white] coordinates {
                (A,24) (B,16) (C,11)
            };
            \addplot [fill=lightgray,point meta=explicit] coordinates {
                (A,53)[53] (B,47)[47] (C,33)[33]
            };
            \addplot [totals] coordinates {
                (A,0) (B,0) (C,0)
            };
            % give all the `\addplot's that should not be shown in the legend
            % an empty legend entry
            % (here "three" is empty, because there is a comma after the last entry)
            \legend{
                one,
                two,
            }
%            % perhaps this one easier to understand
%            % (here "two" isn't shown in the legend
%            \legend{
%                one,
%                ,
%                three
%            }
        \end{axis}
    \end{tikzpicture}
\end{document}