我在文章类中有一个运行良好的代码：
\begin{figure}[!htb]
\centering
\begin{tikzpicture}
\begin{axis}[
xlabel=km,
ylabel=km,
ylabel near ticks,
width=0.6\textwidth,
height=0.6\textwidth,
only marks,nodes near coords={},
nodes near coords style={
coordinate,
name=\pgfplotspointmeta},
clip marker paths=true,
point meta=explicit symbolic
]
\addplot[scatter,mark=*,draw=blue,mark options={scale=1, fill=white}]
table [
x=x,
y=y,
meta=label]
{
x y label
-6960.5568 -1250.1 1
-7802.8464 -991.1904 2
-7156.128 -420.0336 3
-6804.9888 150.012 4
-5902.6944 -526.7088 5
};
\end{axis}
%\foreach \i in {1,...,5} {
% \node[fill=lime,draw=lime,circle,minimum size=1.5pt,scale=0.2,
% label={
% [label distance=-3pt]above:{\scalebox{0.2}{\i}}
% },
% ] (T) at (\i) {};
%}
\end{tikzpicture}
\caption{Fluxo de mínimo custo em $t=1$ (modelo 1)}
\end{figure}
%\end{frame}
\end{document}
但是，当我在 beamer 类中转换相同的代码时，会出现错误：
\documentclass[12pt,fleqn]{beamer}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amsmath,amssymb,amsthm}
\usepackage{pgfplotstable}
\usetikzlibrary{positioning}
\usepackage{float}
\usetikzlibrary{plotmarks}
\usetikzlibrary{patterns}
\usepackage{mathtools}
\usetikzlibrary{arrows}
\usetikzlibrary{quotes,angles}
\usetikzlibrary{shapes,shadings}
\usetikzlibrary{arrows.meta}
\usetikzlibrary{fit,shapes.geometric}
\usepackage{xfp}
\usetikzlibrary{math}
\begin{document}
\begin{frame}{Frame Title}
\begin{figure}[!htb]
\centering
\begin{tikzpicture}
\begin{axis}[
xlabel=km,
ylabel=km,
ylabel near ticks,
width=0.6\textwidth,
height=0.6\textwidth,
only marks,nodes near coords={},
nodes near coords style={
coordinate,
name=\pgfplotspointmeta},
clip marker paths=true,
point meta=explicit symbolic
]
\addplot[scatter,mark=*,draw=blue,mark options={scale=1, fill=white}]
table [
x=x,
y=y,
meta=label]
{
x y label
-6960.5568 -1250.1 1
-7802.8464 -991.1904 2
-7156.128 -420.0336 3
-6804.9888 150.012 4
-5902.6944 -526.7088 5
};
\end{axis}
\foreach \i in {1,...,5} {
\node[fill=lime,draw=lime,circle,minimum size=1.5pt,scale=0.2,
label={
[label distance=-3pt]above:{\scalebox{0.2}{\i}}
},
] (T) at (\i) {};
}
\end{tikzpicture}
\caption{Fluxo de mínimo custo em $t=1$ (modelo 1)}
\end{figure}
\end{frame}
\end{document}
有人能帮助我吗？
答案1
使用fragile框架来避免错误。
其他一些评论：
你不需要加载所有的
amsmath等包，beamer 会自动为你加载它们beamer 没有浮动机制。加载包
float或指定浮动说明符（如）是没有意义的[!htb]。beamer 的图形环境将自动将内容居中，不需要
\centering您不应该将其
\scalebox用于文本。如果您选择合适的小字体大小，那么该大小的字母形状将更容易阅读。
\documentclass[12pt,fleqn]{beamer}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
%\usepackage{amsmath,amssymb,amsthm}
\usepackage{pgfplotstable}
\usetikzlibrary{positioning}
%\usepackage{float}
\usetikzlibrary{plotmarks}
\usetikzlibrary{patterns}
\usepackage{mathtools}
\usetikzlibrary{arrows}
\usetikzlibrary{quotes,angles}
\usetikzlibrary{shapes,shadings}
\usetikzlibrary{arrows.meta}
\usetikzlibrary{fit,shapes.geometric}
\usepackage{xfp}
\usetikzlibrary{math}
\begin{document}
\begin{frame}[fragile]{Frame Title}
\begin{figure}%[!htb]
%\centering
\begin{tikzpicture}
\begin{axis}[
xlabel=km,
ylabel=km,
ylabel near ticks,
width=0.6\textwidth,
height=0.6\textwidth,
only marks,nodes near coords={},
nodes near coords style={
coordinate,
name=\pgfplotspointmeta},
clip marker paths=true,
point meta=explicit symbolic
]
\addplot[scatter,mark=*,draw=blue,mark options={scale=1, fill=white}]
table [
x=x,
y=y,
meta=label]
{
x y label
-6960.5568 -1250.1 1
-7802.8464 -991.1904 2
-7156.128 -420.0336 3
-6804.9888 150.012 4
-5902.6944 -526.7088 5
};
\end{axis}
\foreach \i in {1,...,5} {
\node[fill=lime,draw=lime,circle,minimum size=1.5pt,scale=0.2,
label={
[label distance=-3pt]above:{\Tiny \i}
},
] (T) at (\i) {};
}
\end{tikzpicture}
\caption{Fluxo de mínimo custo em $t=1$ (modelo 1)}
\end{figure}
\end{frame}
\end{document}