将 pgf 图与 y 轴水平对齐

Question

我想水平对齐我的两个图表，以便 y 轴对齐。问题是其中一个 y 轴有两位数，而另一个 y 轴有一位数作为单位。

\documentclass[12pt]{article} 
\usepackage{tikz, color}
\usepackage{pgfplots}

\pgfplotsset{compat=1.12, width=12cm}

\begin{document} 

\begin{tikzpicture}
\begin{axis}[axis lines = left, xmin=0, ymin=0]
\addplot [domain=0:80]
    {0.001*x^3-0.09*x^2+2.95*x}
    ;
\end{axis}
\end{tikzpicture}

\begin{tikzpicture}
\begin{axis}[axis lines = left, xmin=0, ymin=0]
\addplot [domain=0:80]
    {0.001*x^2-0.09*x+2.95}
    ;
\addplot [domain=0:80]
    {0.003*x^2-0.18*x+2.95}
    ;
\end{axis}
\end{tikzpicture}

\end{document}

Answer 1

一种可能性是trim axis left对两种tikzpicture环境都使用选项：

\documentclass[12pt]{article} 
\usepackage{pgfplots}
\pgfplotsset{compat=1.12, width=12cm}
\usepackage{showframe}
\begin{document} 
\begin{center}
\begin{tikzpicture}[trim axis left]
\begin{axis}[axis lines = left, xmin=0, ymin=0]
\addplot [domain=0:80]
    {0.001*x^3-0.09*x^2+2.95*x}
    ;
\end{axis}
\end{tikzpicture}

\begin{tikzpicture}[trim axis left]
\begin{axis}[axis lines = left, xmin=0, ymin=0]
\addplot [domain=0:80]
    {0.001*x^2-0.09*x+2.95}
    ;
\addplot [domain=0:80]
    {0.003*x^2-0.18*x+2.95}
    ;
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}