latex图表标题样式设置

设置图标标题样式需要导入\caption和\subcaption 包，可以改变caption和label的字体、编码样式、对齐方式、格式等

插入子图

代码如下

\begin{figure}	
\centering
\begin{subfigure}[t]{1in}
\centering
\includegraphics[width=1in]{placeholder}
\caption{Caption 1}\label{fig:1a}		
\end{subfigure}
\quad
\begin{subfigure}[t]{1in}
\centering
\includegraphics[width=1in]{placeholder}
\caption{Caption 2}\label{fig:1b}
\end{subfigure}
\caption{Main figure caption}\label{fig:1}
\end{figure}

插入子表

代码类似

\begin{table}	
\centering
\begin{subtable}[t]{2in}
\centering
\begin{tabular}{|l|l|l|}
\hline
		100 & 200 & 300\\
\hline
		400 & 500 & 600\\
\hline
\end{tabular}
\caption{Caption 1}\label{table:1a}
\end{subtable}
\quad
\begin{subtable}[t]{2in}
\centering
\begin{tabular}{|l|l|l|}
\hline
		100 & 200 & 300\\
\hline
		400 & 500 & 600\\
\hline
\end{tabular}
\caption{Caption 2}\label{table:1b}
\end{subtable}
\caption{Main table caption}\label{table:1}
\end{table}

可以用\columnwidth代替\width

设置caption的编号样式

% change the style of the caption numbering.
\renewcommand{\thetable}{\alph{table}}
\renewcommand{\thefigure}{\Alph{table}}
\renewcommand{\thesubtable}{\Roman{subtable}}
\renewcommand{\thesubfigure}{\arabic{subfigure}}

Counter style	Code	Example
Arabic numerals	\arabic{counter}	1, 2
Lower case letters	\alph{counter}	a, b
Upper case letters	\Alph{counter}	A, B
Lower case Roman	numerals \roman{counter}	i, ii
Upper case Roman	numerals \Roman{counter}	I, II

将其中的counter用table或者subtable代替就得到了想要的编号样式
示例：

\renewcommand{\thefigure}{\Roman{figure}}
\renewcommand{\thesubfigure}{\arabic{subfigure}}

\begin{figure}	
\centering
\begin{subfigure}[t]{1in}
\centering
\includegraphics[width=1in]{placeholder}
\caption{Arabic numerals}\label{fig:1a}		
\end{subfigure}
\quad
\begin{subfigure}[t]{1in}
\centering
\includegraphics[width=1in]{placeholder}
\caption{Arabic numerals}\label{fig:1b}
\end{subfigure}
\caption{Capital Roman numerals}\label{fig:1}
\end{figure}

图标编号跟章关联起来

类似，代码如下

% This applies if you have chapters

\renewcommand{\thefigure}{\thechapter.\Alph{figure}} % set caption label style to 1.A
\renewcommand{\thesubfigure}{\arabic{subfigure}}

\begin{figure}	
\centering
\begin{subfigure}[t]{1in}
\centering
\includegraphics[width=1in]{placeholder}
\caption{Arabic numerals}\label{fig:1a}		
\end{subfigure}
\quad
\begin{subfigure}[t]{1in}
\centering
\includegraphics[width=1in]{placeholder}
\caption{Arabic numerals}\label{fig:1b}
\end{subfigure}
\caption{Chapter number dot figure letter}\label{fig:1}
\end{figure}

标题样式设置

导入宏包的时候可以直接设置全局样式，即所有的caption样式都变化，示例如下：

% options apply to all captions
\usepackage[OPTIONS]{caption}

% applies to all subfigure and subtable captions
\usepackage[OPTIONS]{subcaption}

% will apply to all captions
\usepackage[labelfont=it,textfont={bf,it}]{caption}

% will apply to all subcaptions
\usepackage[labelfont=bf,textfont=normalfont,singlelinecheck=off,justification=raggedright]{subcaption}

也可以使用\captionsetup设置标题样式，这样后面所有的标题样式都是根据\captionsetup重新设置的，示例代码如下：

\captionsetup[FLOAT_TYPE]{OPTIONS}

FLOAT_TYPE可以是table、subtable、figure、subfigure等，下面的代码展示了label font、text font的设置以及子标题的对齐方式的设置：

% for figures: caption label is italic, the caption text is bold / italic
\captionsetup[figure]{labelfont=it,textfont={bf,it}}
% for subfigures: caption label is bold, the caption text normal.
% justification is raggedright (i.e. left aligned)
% singlelinecheck=off means that the justification setting is used even when the caption is only a single line long. 
% if singlelinecheck=on, then caption is always centered when the caption is only one line.
\captionsetup[subfigure]{labelfont=bf,textfont=normalfont,singlelinecheck=off,justification=raggedright}

\begin{figure}	
	\centering
	\begin{subfigure}[t]{1in}
		\centering
		\includegraphics[width=1in]{placeholder}
		\caption{Caption}\label{fig:1a}
	\end{subfigure}
	\quad
	\begin{subfigure}[t]{1in}
		\centering
		\includegraphics[width=1in]{placeholder}
		\caption{Caption}\label{fig:1b}
	\end{subfigure}
	\caption{Main figure caption.}\label{fig:1}
\end{figure}

运行效果如下

其中singlelinecheck=off是设置即使是一行的标题也采用justification的设置，否则默认居中。
标题大小设置如下

\captionsetup{font={scriptsize}}

其他尺寸参见http://blog.csdn.net/wkd22775/article/details/51784770