我一直在研究這個問題，並遇到了兩個主要的「解決方案」：
\usepackage{arydshln}
如上所述這裡。
和這個：
\usepackage{dashrule}
如中所述這另一篇文章。
但是，由於我正在加載這些包：
\usepackage{array}
\usepaclage{tabularx}
\usepackage{longtable}
\usepackage{tabu}
看來我既不能使用也不能arydshln使用dashline。
知道為什麼會發生這種情況嗎？我怎樣才能在我的tabularx裡面得到一條水平虛線同時-在一個table環境內？
這就是我所擁有的：
\documentclass{article}
\usepackage{multirow}
\usepackage{array}
\usepackage{tabularx}
\usepackage{longtable}
\usepackage{tabu}
\begin{document}
Hello.
\begin{longtabu}{l p{0.8\linewidth}}
WHO & \hspace{5mm} World Health Organization\\[1mm]
GDP & \hspace{5mm} Gross Domestic Product\\[1mm]
PPP & \hspace{5mm} Purchasing Power Parities\\[1mm]
\end{longtabu}
\begin{table}\tiny
\caption{Muscles of the thigh}
\newcolumntype{Y}{>{\raggedright\arraybackslash}X}
\begin{tabularx}{\textwidth}{YYYYY}
Muscle & Origin & Insertion& Nerve & Action \\
\firsthline\\
\textbf{Anterior Compartment} & & & & \\[3mm]
Quadriceps femoris &
Rectus Femoris: anterior inferior iliac spine. Vastus Lateralis: greater trochanter and linea aspera of femur. Vastus Intermedius: body of femur. Vastus Medialis: linea aspera of femur &
Patella and onto tibial tuberosity through patellar ligament &
Femoral &
Extends knee; rectus femoris also flexes hip\\\\
Sartorius &
Anterior superiro iliac spine &
Medial side of tibial tuberosity &
Femoral &
Flexes hip and knee; rotates thigh laterally and leg medially\\\\
\hline\\% I want this line to be dashed
\textbf{Medial Compartment} & & & & \\[3mm]
Adductor brevis &
Pubis &
Pectineal line and linea aspera of femur &
Obturator &
Adducts, laterally rotates thigh; flexes hip\\\\
Adductor longus &
Pubis &
Linea aspera of femur &
Obturator &
Adducts, laterally rotates thigh; flexes hip\\\\
\lasthline\\
\end{tabularx}
\label{tab:ThighMuscles2}
\end{table}
\end{document}
現在，如果我使用\dashrulewhere the \hlineis （dashrule當然在加載包之後），我會得到一個未定義的控制序列錯誤。
如果我使用\hdashline（arydshln包的）我會收到 101 錯誤，這些錯誤將我指向文檔中的其他表，所以我猜測它與我加載的其他包不相容有關。
答案1
它對我有用，沒有錯誤，如果它對您不起作用，您需要製作一個顯示問題的範例。
\documentclass{article}
\usepackage{multirow}
\usepackage{array}
\usepackage{tabularx}
\usepackage{longtable}
\usepackage{tabu}
\usepackage{arydshln}
\begin{document}
Hello.
\begin{table}\tiny
\caption{Muscles of the thigh}
\newcolumntype{Y}{>{\raggedright\arraybackslash}X}
\begin{tabularx}{\textwidth}{YYYYY}
Muscle & Origin & Insertion& Nerve & Action \\
\firsthline\\
\textbf{Anterior Compartment} & & & & \\[3mm]
Quadriceps femoris &
Rectus Femoris: anterior inferior iliac spine. Vastus Lateralis: greater trochanter and linea aspera of femur. Vastus Intermedius: body of femur. Vastus Medialis: linea aspera of femur &
Patella and onto tibial tuberosity through patellar ligament &
Femoral &
Extends knee; rectus femoris also flexes hip\\\\
Sartorius &
Anterior superiro iliac spine &
Medial side of tibial tuberosity &
Femoral &
Flexes hip and knee; rotates thigh laterally and leg medially\\\\
\hdashline\\% I want this line to be dashed
\textbf{Medial Compartment} & & & & \\[3mm]
Adductor brevis &
Pubis &
Pectineal line and linea aspera of femur &
Obturator &
Adducts, laterally rotates thigh; flexes hip\\\\
Adductor longus &
Pubis &
Linea aspera of femur &
Obturator &
Adducts, laterally rotates thigh; flexes hip\\\\
\lasthline\\
\end{tabularx}
\label{tab:ThighMuscles2}
\end{table}
\end{document}
使用更新後的示例，longtabu如果您更改longtabu為longtable“包tabu有一些不錯的想法”，則它可以工作，但不幸的是，它錯誤地定義了標準乳膠數組包>{..}語法（這是包的有意記錄的功能，而不是錯誤），並且具有其他不相容性，所以經常需要走“禁忌之路”，只使用該軟體包的功能或使用以下軟體包的組合：是旨在同時使用時相互配合而不發生衝突。