PGFPlots：半对数轴和 y 轴刻度标记

Question

我正在尝试设置一个semilogxaxis。pgfplots我试图生成的图像是 ，但是下面的代码正在生成

\documentclass[tikz]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat = 1.9}

\begin{document}
\begin{tikzpicture}
  \begin{semilogxaxis}[
    ylabel = Gain db,
    xlabel = Frequency Hz,
    ytick = {0, 100},
    xtickten = {2, 3, 4, 5, 6}]
  \end{semilogxaxis}
\end{tikzpicture}
\end{document}

Answer 1

这就是您所寻找的东西吗？

免责声明：我是 的新手pgfplots。

\documentclass[tikz]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat = 1.9}
\begin{document}
\begin{tikzpicture}
    \begin{semilogxaxis}[
            axis x line=center,
            axis y line=left,
            xmajorgrids=true,
            xlabel style={below=3ex},
            enlarge x limits,
            ymax = 150,
            ytick = {100},
            ylabel = Gain db,
            xlabel = Frequency Hz,
        ]
        \addplot coordinates {(1e2,100) (1e3,100) (1e4,80) (1e5,20) (1e6,0)};
        \node[above] at (axis cs:5e3,90) {$-6$};
        \node[above] at (axis cs:5e4,50) {$-12$};
        \node[above] at (axis cs:5e5,10) {$-6$};
    \end{semilogxaxis}
\end{tikzpicture}
\end{document}