pgf 图中的条形图 — 缺少数据并删除刻度？

Question

\begin{tikzpicture}
\begin{axis}[
    xtick = data,
    ylabel=Size of Slick,
    legend style={at={(0.5,-0.13)},
    anchor=north,legend columns=-1},
    ybar interval=1,]
\addplot 
    coordinates {(1, 1.047) (2, 2.005) (3, 3.348) (4, 5.719) (5, 7.273) (6, 8.41) (7, 9.117)};
\addplot 
    coordinates {(1, 1.139) (2, 2.087) (3, 3.413) (4, 5.765) (5, 7.304) (6, 8.426) (7, 9.127)};
\legend{Initial Observation, 10 min. later}
\end{axis}
\end{tikzpicture}

因此，这给了我一个没有数据点的图x=7。我还想知道如何去掉顶部和右侧那些难看的勾号。谢谢！

Answer 1

您可能只想要ybar（而不是ybar interval）并xtick pos=lower,ytick pos=left删除顶部和右侧的勾号。

\documentclass[tikz,border=3mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
    xtick = data,
    ylabel=Size of Slick,
    legend style={at={(0.5,-0.13)},
    anchor=north,legend columns=-1},
    ybar,bar width=1em,xtick pos=lower,ytick pos=left]
\addplot 
    coordinates {(1, 1.047) (2, 2.005) (3, 3.348) (4, 5.719) (5, 7.273) (6, 8.41) (7, 9.117)};
\addplot 
    coordinates {(1, 1.139) (2, 2.087) (3, 3.413) (4, 5.765) (5, 7.304) (6, 8.426) (7, 9.127)};
\legend{Initial Observation, 10 min.\ later}
\end{axis}
\end{tikzpicture}
\end{document}