我提前感谢你的建议。以下代码大约在两年前有效，但在我将 TexLive 和 R 更新到最新版本后，它停止工作。错误消息是
段落在 \FV@BeginScanning 完成之前结束。
下面是代码。当我运行 R chunk 时，我没有遇到任何问题。
\documentclass[10pt,xcolor=svgnames, compress]{beamer}
\usepackage{multirow}
\usepackage{Sweave}
\usepackage{fontspec}
\usepackage{mathtools}
\usepackage[MathematicalAlphanumericSymbols]{ucharclasses}
\usepackage[math-style=TeX]{unicode-math}
\usetheme{Luebeck}
\usefonttheme{professionalfonts}
\usefonttheme[stillsansseriflarge]{serif}
\renewcommand{\emph}[1]{\textbf{#1}}
\setmainfont[Ligatures=TeX,Scale=.95]{Palatino}
\setsansfont{Trebuchet MS}
% \setmonofont{Inconsolata}
% \setmathfont{Asana-Math.otf}
\AtBeginDocument{
\DeclareMathOperator{\var}{var}
\DeclareMathOperator{\sd}{SD}
\DeclareMathOperator{\SE}{SE}
\DeclareMathOperator{\cov}{cov}
\DeclareMathOperator{\corr}{corr}
}
\newcommand{\phat}{\hat{p}}
\newcommand{\xbar}{\bar{x}}
\newcommand{\ybar}{\bar{y}}
\newcommand{\Cond}[2]{\left.#1\,\middle|\,#2\right.}
\newcommand{\EV}[1]{\mathbf{E}\!\left(#1\right)}
\newcommand{\Var}[1]{\mathbf{var}\!\left(#1\right)}
\newcommand{\SD}[1]{\mathbf{SD}\!\left(#1\right)}
\newcommand{\dist}[2]{#1\!\left(#2\right)}
\newcommand{\Prob}[1]{\mathbf{P}\!\left(#1\right)}
\newcommand{\Cov}[2]{\mathbf{cov}\!\left(#1,\,#2\right)}
\newcommand{\Corr}[2]{\mathbf{corr}\!\left(#1,\,#2\right)}
\usepackage{tabularx}
\usepackage{booktabs}
\usepackage{parskip}
\usepackage{csquotes}
\newcolumntype{C}{>{\centering\arraybackslash}X}
\newcolumntype{L}{>{\raggedright\arraybackslash}X}
\newcolumntype{R}{>{\raggedleft\arraybackslash}X}
\setbeamerfont{headline}{family=\sffamily}
\setbeamerfont{footline}{family=\sffamily}
\definecolor{Sred}{RGB}{204,0,0}
\definecolor{Sblue}{RGB}{53,76,151}
\definecolor{SWarmGrey}{cmyk}{.16,.23,.23,.44}
\definecolor{SMedium}{cmyk}{.06,.09,.39,.16}
\def\mycolorA{Sblue}
\def\mycolorB{Sred}
\def\mycolorC{white}
\def\mycolorD{SMedium}
\setbeamercolor{title}{fg=\mycolorA, bg=\mycolorC}
\setbeamercolor{frametitle}{fg=\mycolorA, bg=\mycolorC}
\setbeamercolor{section in head/foot}{fg=white,bg=\mycolorB}
\setbeamercolor{subsection in head/foot}{fg=white,bg=\mycolorB}
\setbeamercolor{title in head/foot}{fg=white,bg=\mycolorB}
\setbeamercolor{subtitle in head/foot}{fg=white,bg=\mycolorB}
\setbeamercolor{structure}{fg=\mycolorA}
\setbeamercolor{page number in head/foot}{fg=white,bg=\mycolorB}
\setbeamertemplate{frametitle continuation}{}
\setbeamertemplate{footline}
{
\hbox{%
\begin{beamercolorbox}[wd=.45\paperwidth,ht=2.25ex,dp=1ex,left]{title
in head/foot}%
\usebeamerfont{title in head/foot}~\inserttitle
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.10\paperwidth,ht=2.25ex,dp=1ex,center]{page
number in head/foot}%
\usebeamerfont{page number in head/foot}\insertpagenumber
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.45\paperwidth,ht=2.25ex,dp=1ex,left]{subtitle in head/foot}%
\usebeamerfont{title in head/foot}\insertsubtitle
\end{beamercolorbox}%
}%
\vskip0pt%
}
\setbeamertemplate{headline}
{
\hbox{%
\begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex,center]{title
in head/foot}%
\usebeamerfont{title in head/foot}\insertnavigation{\paperwidth}
\end{beamercolorbox}%
}%
\vskip0pt%
}
\usepackage{tikz}
\usetikzlibrary{positioning}
\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
\begin{document}
\SweaveOpts{concordance=TRUE}
<<include=FALSE, echo=FALSE>>=
library(knitr)
opts_chunk$set(
concordance=TRUE
)
@
<<setup, echo=FALSE, message=FALSE, warning=FALSE>>=
library(grid)
library(grDevices)
library(plyr)
library(xtable)
library(tidyverse)
library(knitr)
library(readxl)
library(scales)
library(reshape2)
library(readxl)
library(showtext)
library(extrafont)
loadfonts(device = "win")
Sred <- rgb(204,0,0,max=255)
Sblue <- rgb(53,76,151,max=255)
get_S_mix <- colorRamp(c(Sred,Sblue)) ## a function on (0,1) for amount of red
Spurple <- rgb(get_S_mix(.5),max=255)
font_add("Trebuchet",
regular="c:/Windows/Fonts/trebuc.ttf")
font_add("Palatino",
regular="c:/Windows/Fonts/pala.ttf",
bold="c:/Windows/Fonts/pala.ttf",
italic="c:/Windows/Fonts/pala.ttf")
plot.text.family <- "Trebuchet"
slide.text.family <- "Palatino"
plot.text.family <- "Trebuchet"
slide.text.family <- "Palatino"
showtext_auto()
options(digits=3)
opts_chunk$set(echo=FALSE, cache=TRUE,
scipen=999, dev='cairo_pdf',
fig.height=2.8, fig.width=5,
fig.showtext=TRUE,
xtable.booktabs=TRUE, xtable.include.rownames=FALSE,
message=FALSE, warning=FALSE, error=TRUE)
plot.text.family <- "Trebuchet"
slide.text.family <- "Palatino"
theme_set(theme_bw())
theme_update(text=element_text(face="plain",colour="black",size=14,
hjust=.5,vjust=.5,angle=0,lineheight=.9,
family=plot.text.family),
plot.margin=grid::unit(rep(.04,4),"in"))
set.seed(1234)
sanitize <- function(x) x
@
<<NPR>>=
options(scipen=999)
start.yr <- 2017
d <- 2000
M <- 9854
n <- 5
p <- .483
x <- 0:n
px <- dbinom(x, n, p)
@
\begin{frame}{fragile}
The probability function for the binomial model is
\begin{align*}
\Prob{X=x}=\binom{n}{x}p^{x}\left(1-p\right)^{n-x}\text{, where }\binom{n}{x}=\frac{n!}{x!\left(n-x\right)!}
\end{align*}
For $n=\Sexpr{n}$ and $p=\Sexpr{p}$,
<<binomialBars, fig.width=3.5, fig.height=2>>=
PB <- data.frame(x=x, Prob_X=px) %>%
ggplot(aes(x=x, y=Prob_X)) %>%
+ geom_bar(stat="identity", color="black",fill="white") %>%
+ geom_text(aes(y=Prob_X+.015, label=format(Prob_X, nsmall=3)), size=2) %>%
+ scale_y_continuous("P(X)") %>%
+ scale_x_continuous("Season Ticket Purchases (X)",breaks=x) %>%
+ theme(text=element_text(size=9))
PB
@
\end{frame}
\end{document}