为什么添加宽图形时有些两列文本会消失？

Question

我正在写一篇科学的双栏论文，我想添加一个位于两栏之间的宽特征。幸运的是，在阅读了这里的一些文章后，我能够做到这一点，但使用[H]或将其强制到特定位置似乎相当困难[ht!]。它到了最底部，我无法像我希望的那样转到下一页的顶部。当我删除一些不需要的文本时，它会上升，但会删除一些我没有碰过的东西。看看我写的代码。

\begin{figure}[ht!]
\onecolumn
\begin{tabular}{|llll|}

\hline

\begin{tikzpicture}
    \node (is-root) {is} [sibling distance=1.5cm]
        child {node {X}}
        child {node {precise }};
    \path (is-root) +(0,-2.5\tikzleveldistance)
    node {\textit{}};
\end{tikzpicture}
 & 
\begin{tikzpicture}
    \node (is-root) {is} [sibling distance=2cm]
        child {node {X}}
        child {node {and}[sibling distance=1.5cm]
            child {node {exact}}
            child {node {accurate}}
        };
    \path (is-root) +(0,-2.5\tikzleveldistance)
    node {\textit{}};
\end{tikzpicture}

& $\Longrightarrow$ %could not apply baseline
&

\begin{tikzpicture}
    \node (is-root) {if} [sibling distance=4cm]
        child {node {is} [sibling distance=2cm]
            child {node {X}}
            child {node {precise }
        }}
        child {node {is} [sibling distance=2cm]
            child {node {X} }
            child {node {and}[sibling distance=1.5cm]
                child {node {exact}}
                child {node {accurate}}
    }};
;

     \path (is-root) +(0,-2.5\tikzleveldistance)
     node {\textit{}};
\end{tikzpicture} \\ \hline
\end{tabular}

\caption{An example of the reconstructing sentences in out system}
\label{normalization}


\end{figure}
\twocolumn

忘记箭头吧，我无法将它与树垂直对齐。我试图让变量 X 成为基线，因为它写在所有树中，但我做不到。主要的问题是，当我清理上面的一些文本时，删除的文本去了哪里？如果问题

\onecolumn  

和

\twocolumn 

那我该怎么办呢？

Answer 1

您可以使用strip环境 fromcuted来代替figure*环境。以下是代码：

\documentclass{article}
\usepackage{cuted, caption, makecell}
\usepackage{tikz}
\usepackage{lipsum} \usepackage[showframe, twocolumn, columnsep=1.5em]{geometry}

\begin{document}

\lipsum[1]
\begin{strip}
\setlength\tabcolsep{3pt}
\centering
\begin{tabular}{|ll@{\raisebox{14.6ex}{$ =⇒ $}\enspace}l|}

\hline

\begin{tikzpicture}
    \node (is-root) {is} [sibling distance=1.5cm]
        child {node {X}}
        child {node {precise }};
    \path (is-root) +(0,-2.5\tikzleveldistance)
    node {\textit{}};
\end{tikzpicture}
 &
\begin{tikzpicture}
    \node (is-root) {is} [sibling distance=2cm]
        child {node {X}}
        child {node {and}[sibling distance=1.5cm]
            child {node {exact}}
            child {node {accurate}}
        };
    \path (is-root) +(0,-2.5\tikzleveldistance)
    node {\textit{}};
\end{tikzpicture}

 &
\begin{tikzpicture}
    \node (is-root) {if} [sibling distance=4cm]
        child {node {is} [sibling distance=2cm]
            child {node {X}}
            child {node {precise }
        }}
        child {node {is} [sibling distance=2cm]
            child {node {X} }
            child {node {and}[sibling distance=1.5cm]
                child {node {exact}}
                child {node {accurate}}
    }};
;

     \path (is-root) +(0,-2.5\tikzleveldistance)
     node {\textit{}};
\end{tikzpicture} \\ \hline
\end{tabular}

\captionof{figure}{An example of the reconstructing sentences in out system}
\label{normalization}


\end{strip}
\lipsum[2-6]

\end{document} 

你也可以使用figure*环境。在这种情况下，你有一个浮动元素，它将被放置在页面的顶部，通常是下一个：

\lipsum[1]
\begin{figure*}
\setlength\tabcolsep{3pt}
\centering
\begin{tabular}{|ll@{\raisebox{14.6ex}{$ =⇒ $}\enspace}l|}

\hline

\begin{tikzpicture}
    \node (is-root) {is} [sibling distance=1.5cm]
        child {node {X}}
        child {node {precise }};
    \path (is-root) +(0,-2.5\tikzleveldistance)
    node {\textit{}};
\end{tikzpicture}
 &
\begin{tikzpicture}
    \node (is-root) {is} [sibling distance=2cm]
        child {node {X}}
        child {node {and}[sibling distance=1.5cm]
            child {node {exact}}
            child {node {accurate}}
        };
    \path (is-root) +(0,-2.5\tikzleveldistance)
    node {\textit{}};
\end{tikzpicture}

 &
\begin{tikzpicture}
    \node (is-root) {if} [sibling distance=4cm]
        child {node {is} [sibling distance=2cm]
            child {node {X}}
            child {node {precise }
        }}
        child {node {is} [sibling distance=2cm]
            child {node {X} }
            child {node {and}[sibling distance=1.5cm]
                child {node {exact}}
                child {node {accurate}}
    }};
;

     \path (is-root) +(0,-2.5\tikzleveldistance)
     node {\textit{}};
\end{tikzpicture} \\ \hline
\end{tabular}

\caption{An example of the reconstructing sentences in out system}
\label{normalization}


\end{figure*}
\lipsum[2-12]