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TikZ ダイアグラム上のプロットの凡例をタイプセットする

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TikZ ダイアグラム上のプロットの凡例をタイプセットする

次のコードで、必要な表示が得られます。(コマンドを使用すると、コードがさらに効率的になることはわかっていますforeach。) 凡例には、より一貫性のあるコードが必要です。何か提案はありますか?

\documentclass[10pt]{amsart}
\usepackage{mathtools}


\usepackage{tikz}


\begin{document}



\noindent \hspace*{\fill}
\begin{tikzpicture}

%Two scatter plots are drawn.
%
%The axes are drawn.
\draw (0,0) -- (7,0);
\draw (0,0) -- (0,4.5);
%
%Tick marks on the x-axis is drawn.
\draw ($(0.5,0) +(0,2pt)$) -- ($(0.5,0) +(0,-2pt)$);
\draw ($(1.25,0) +(0,2pt)$) -- ($(1.25,0) +(0,-2pt)$);
\draw ($(2,0) +(0,2pt)$) -- ($(2,0) +(0,-2pt)$);
\draw ($(2.75,0) +(0,2pt)$) -- ($(2.75,0) +(0,-2pt)$);
\draw ($(3.5,0) +(0,2pt)$) -- ($(3.5,0) +(0,-2pt)$);
\draw ($(4.25,0) +(0,2pt)$) -- ($(4.25,0) +(0,-2pt)$);
\draw ($(5,0) +(0,2pt)$) -- ($(5,0) +(0,-2pt)$);
\draw ($(5.75,0) +(0,2pt)$) -- ($(5.75,0) +(0,-2pt)$);
\draw ($(6.5,0) +(0,2pt)$) -- ($(6.5,0) +(0,-2pt)$);
%
%Tick marks on the y-axis is drawn.
\draw ($(0,0) +(-2pt,0)$) -- ($(0,0) +(0,0)$);
\draw ($(0,0.5625) +(-2pt,0)$) -- ($(0,0.5625) +(2pt,0)$);
\draw ($(0,1.125) +(-2pt,0)$) -- ($(0,1.125) +(2pt,0)$);
\draw ($(0,1.6875) +(-2pt,0)$) -- ($(0,1.6875) +(2pt,0)$);
\draw ($(0,2.25) +(-2pt,0)$) -- ($(0,2.25) +(2pt,0)$);
\draw ($(0,2.8125) +(-2pt,0)$) -- ($(0,2.8125) +(2pt,0)$);
\draw ($(0,3.375) +(-2pt,0)$) -- ($(0,3.375) +(2pt,0)$);
\draw ($(0,3.9375) +(-2pt,0)$) -- ($(0,3.9375) +(2pt,0)$);
\draw ($(0,4.5) +(-2pt,0)$) -- ($(0,4.5) +(2pt,0)$);
%
%Horizontal lines are drawn in the first quadrant of the Cartesian plane.
\draw (0,0.5625) -- (7,0.5625);
\draw (0,1.125) -- (7,1.125);
\draw (0,1.6875) -- (7,1.6875);
\draw (0,2.25) -- (7,2.25);
\draw (0,2.8125) -- (7,2.8125);
\draw (0,3.375) -- (7,3.375);
\draw (0,3.9375) -- (7,3.9375);
\draw (0,4.5) -- (7,4.5);
%
%The label for the x-axis is typeset.
\node[anchor=north, inner sep=0] at ($(3.5,0) +(0,-0.65)$){Year};
%The label for the y-axis is typeset.
\node[anchor=north, inner sep=0, rotate=90] at ($(0,2.25) +(-1.25,0)$){Amount (US cents per lb)};
%
%The title for the plots is typeset.
\node[anchor=south, inner sep=0, align=center] at ($(3.5,0) +(0,4.75)$){Regular Coffee Profits\\Compared to Fair Trade Coffee\\Profits in Tanzania};
%
%Some tick marks along the x-axis are labeled.
\node[anchor=north, inner sep=0, font=\footnotesize] at ($(0.5,0) +(0,-0.15)$){2000};
\node[anchor=north, inner sep=0, font=\footnotesize] at ($(2,0) +(0,-0.15)$){2002};
\node[anchor=north, inner sep=0, font=\footnotesize] at ($(3.5,0) +(0,-0.15)$){2004};
\node[anchor=north, inner sep=0, font=\footnotesize] at ($(5,0) +(0,-0.15)$){2006};
\node[anchor=north, inner sep=0, font=\footnotesize] at ($(6.5,0) +(0,-0.15)$){2008};
%Some tick marks along the y-axis are labeled.
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,0) +(-0.15,0)$){0};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,0.5625) +(-0.15,0)$){20};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,1.125) +(-0.15,0)$){40};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,1.6875) +(-0.15,0)$){60};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,2.25) +(-0.15,0)$){80};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,2.8125) +(-0.15,0)$){100};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,3.375) +(-0.15,0)$){120};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,3.9375) +(-0.15,0)$){140};
\node[anchor=east, inner sep=0, font=\footnotesize] at ($(0,4.5) +(-0.15,0)$){160};
%
%
%One of the two plots is drawn.
\draw ($(0.5,0) +(0,1.51875)$) -- ($(1.25,0) +(0,0.95625)$) -- ($(2,0) +(0,0.675)$) -- ($(2.75,0) +(0,0.675)$) -- ($(3.5,0) +(0,0.703125)$)
-- ($(4.25,0) +(0,1.18125)$) -- ($(5,0) +(0,1.153125)$) -- ($(5.75,0) +(0,1.659375)$) -- ($(6.5,0) +(0,1.74375)$);
\draw[fill] ($(0.5,0) +(0,1.51875)$) circle (1.5pt);
\draw[fill] ($(1.25,0) +(0,0.95625)$) circle (1.5pt);
\draw[fill] ($(2,0) +(0,0.675)$) circle (1.5pt);
\draw[fill] ($(2.75,0) +(0,0.675)$) circle (1.5pt);
\draw[fill] ($(3.5,0) +(0,0.703125)$) circle (1.5pt);
\draw[fill] ($(4.25,0) +(0,1.18125)$) circle (1.5pt);
\draw[fill] ($(5,0) +(0,1.153125)$) circle (1.5pt);
\draw[fill] ($(5.75,0) +(0,1.659375)$) circle (1.5pt);
\draw[fill] ($(6.5,0) +(0,1.74375)$) circle (1.5pt);
%
%The other of the two plots is drawn.
\draw[dashed] ($(0.5,0) +(0,3.628125)$) -- ($(1.25,0) +(0,3.65625)$) -- ($(2,0) +(0,3.65625)$) -- ($(2.75,0) +(0,3.65625)$)
-- ($(3.5,0) +(0,3.65625)$) -- ($(4.25,0) +(0,3.65625)$) -- ($(5.75,0) +(0,3.65625)$) -- ($(6.5,0) +(0,3.853125)$);
\draw[fill=white, thick] ($(0.5,0) +(0,3.628125)$) circle (1.5pt);
\draw[fill=white, thick] ($(1.25,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(2,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(2.75,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(3.5,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(4.25,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(5,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(5.75,0) +(0,3.65625)$) circle (1.5pt);
\draw[fill=white, thick] ($(6.5,0) +(0,3.853125)$) circle (1.5pt);
%
%
%The legend to the plots is typeset.
\draw (1.75,-1.25) -- (5.25,-1.25) --(5.25,-2.125) -- (1.75,-2.125) -- cycle;
\draw[dashed] ($(1.75,-1.5) +(4pt,0)$) -- ($(1.75,-1.5) +(32pt,0)$);
\draw [fill=white, thick] ($(1.75,-1.5) +(18pt,0)$) circle (1.5pt);
\node[anchor=west, inner sep=0, font=\footnotesize] at ($(1.75,-1.5) +(36pt,0)$){fair trade coffee}; 
\draw ($(1.75,-1.875) +(4pt,0)$) -- ($(1.75,-1.875) +(32pt,0)$);
\draw[fill]  ($(1.75,-1.875) +(18pt,0)$) circle (1.5pt);
\node[anchor=west, inner sep=0, font=\footnotesize] at ($(1.75,-1.875) +(36pt,0)$){regular coffee}; 

\end{tikzpicture}
\hspace{\fill}




\end{document}

答え1

次の解決策が図の描画に役立つかどうかを確認してください。

\documentclass[margin=3mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}

\begin{document}
    \begin{tikzpicture}
    \pgfplotstableread{% here should be real coffee price
                       % y1: regular coffee
                       % y2: fair trade coffee
        date    y1      y2
        2001    1.519   3.628
        2002    0.956   3.656
        2003    0.675   3.656
        2004    0.675   3.656
        2005    0.703   3.656
        2006    1.181   3.656
        2007    1.153   3.656
        2008    1.659   3.656
        2009    1.743   3.853
                    }\mydata
\begin{axis}[width=80mm,
grid,
tick label style = {font=\footnotesize,
                    /pgf/number format/1000 sep={}},
xlabel = year,
ylabel = {Amount (US cents per lb)},
 title = {Profits\\ Compared to Fair Trade Coffee\\ Profits in Tanzania},
title style={at={(0.5,1)},
             text width=0.8\linewidth,
             align=center},
legend style={at={(0.5,-0.16)},anchor=north},
legend cell align=left
            ]
% regular coffee
\addplot table[x=date, y=y1] {\mydata};
% fair trade coffee
\addplot table[x=date, y=y2] {\mydata};
%The legend
    \legend{regular coffee, fair trade coffee};
\end{axis}
    \end{tikzpicture}
\end{document}

ここに画像の説明を入力してください

注記：

  • パケットを使用することで、pgfplots画像のコードが大幅に削減され、簡素化され、はるかに明確になります。
  • コーヒーの価格については、あなたの座標を使用しますムウェ(最小限の動作例) ただし、実際の価格は約 40 倍高いと疑われます。そのため、表のデータを確認し\mydata、それに応じて修正する必要があります。
  • 図を大きくしたり小さくしたい場合は、オプションをwidth80mmから希望の幅に変更してください。
  • ドキュメントクラスには、standalone画像の描画に便利な を選択します。ただし、これを に置き換えることもできます{amsart}。
  • ページ上の画像の配置については、あなたが示したようなアプローチを使用しないでくださいムウェ\begin{center} ... tikzpicture ... \end{center}より良いのは、それをfloat環境で囲むことです。figure

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