我试图在同一个图中设置一个带有两个y轴的图,一个波幅和相位的波德图。我使用带有\ begin {axis}的tikzpicture包和\ addplot覆盖两个图。好吧,至少那个想法......我的问题是我似乎无法控制图表。我无法为轴设置固定间隔,无法控制绘图线的颜色/样式。请指出在我试图制作Bode情节时是否有些不可思议的事情。特别是,如何在线条上设置样式,一个是虚线还是一个实体?
\begin{figure}[H]
\centering
\begin{minipage}{0.9 \textwidth}
\begin{tikzpicture}
%%% AMPLITUDE
\begin{axis}[
width=340pt,
height=180pt,
xlabel=Frequency,
xmode = log,
ylabel=Amplitude [dB],
axis x line=bottom,
axis y line=left,
% xmin=10, xmax=1000000,
% ylabel near ticks,
legend pos= south west,
font=\scriptsize,
legend style={font=\scriptsize,draw=none,fill=none}
]
\addplot table [color=black, mark=none,dotted,y=$amp$, x=freq, font=\scriptsize]{amp.dat};
\addlegendentry{$Amplitude$ }
\end{axis}
%%% PHASE
\begin{axis}[
width=340pt,
height=180pt,
% xmin=10, xmax=1000000,
hide x axis,
axis y line=right,
xmode = log,
ylabel=Phase [deg],
% ymin=-300, ymax=-120,
% ylabel near ticks,
legend pos= north east,
font=\scriptsize,
legend style={font=\scriptsize,draw=none,fill=none}
]
\addplot table [mark=none,dashed, y=$phase$, x=freq]{phase.dat};
\addlegendentry{$Phase$ }
\end{axis}
\end{tikzpicture}
\caption{A Bode-plot of the common source gain stage.}
\label{fig:cg_sweep}
\end{minipage}
\end{figure}
如果需要,这里有一些测试数据:https://dl.dropboxusercontent.com/u/43498716/cg_sweep.dat
谢谢!
答案 0 :(得分:2)
这是你想要实现的目标吗?
这是 pgfplots 解决方案。
设置间隔的示例:
xmin=10, xmax=1000000
,ymin=10, ymax=35,
...
设置绘图线颜色和样式的示例:
\addplot[red, dashed]
...
\documentclass[border=10pt]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.9}
\begin{document}
\begin{tikzpicture}
\pgfplotsset{set layers}
\begin{axis}[
xmode=log,
xmin=10, xmax=1000000,
ymin=10, ymax=35,
scale only axis,
axis y line*=left,
xlabel=Frequency,
ylabel={Amplitude [dB]},
]
\addplot[blue, solid] table[x=freq,y=$amp$] {cg_sweep.dat};
\label{aplot}
\end{axis}
\begin{axis}[
xmode=log,
xmin=10, xmax=1000000,
ymin=-290, ymax=-140,
scale only axis,
axis y line*=right,
axis x line=none,
ylabel={Phase [deg]},
]
\addlegendimage{/pgfplots/refstyle=aplot}\addlegendentry{$Amplitude$}
\addplot[red, dashed] table[x=freq,y=$phase$] {cg_sweep.dat};
\addlegendentry{$Phase$ }
\end{axis}
\end{tikzpicture}
\end{document}