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LATEX is an editing tool that takes care of the format so you only have to worry about the contents of your document. Nevertheless, sometimes a better control of floating elements is necessary. This article explains how to position images and tables in a LATEX document.
Contents |
The default alignment for images and tables is set to left
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\includegraphics[width=0.5\textwidth]{lion-logo}
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ante. Donec ullamcorper, felis non sodales commodo, lectus velit
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This is a simple example, for a description of this and other ways to include images in your LATEX file see the article Inserting Images.
To change the default alignment of a image from left or right an easy manner is to add
\usepackage[export]{adjustbox}
to the preamble of your file and then use an additional option in your image importing statement
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\includegraphics[width=0.5\textwidth, right]{lion-logo}
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non sodales commodo, lectus velit ultrices augue,
a dignissim nibh lectus placerat pede. Vivamus nunc nunc,
molestie ut, ultriciesvel, semper in, velit. Ut porttitor.
The package adjustbox enables an additional option in the \includegraphics command, in the example the picture is aligned to right. The available values are: left, right, center, outer and inner, the last two are intended for two-sided documents.
The figure environment (see Inserting Images) is intended to provide automatic positioning.
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ante lobortis sollicitudin.
\begin{figure}[h]
\includegraphics[width=0.5\textwidth, inner]{lion-logo}
\caption{Caption}
\label{fig:figure2}
\end{figure}
This environment uses a positioning parameter passed inside brackets, it can take the next values:
| Parameter | Position |
|---|---|
| h | Place the float here, i.e., approximately at the same point it occurs in the source text (however, not exactly at the spot) |
| t | Position at the top of the page. |
| b | Position at the bottom of the page. |
| p | Put on a special page for floats only. |
| ! | Override internal parameters LaTeX uses for determining "good" float positions. |
| H | Places the float at precisely the location in the LATEX code. Requires the float package. This is somewhat equivalent to h!. |
You can put more than one value in the parameter, for instance, if you write [ht] LATEX will try to position the figure here, but if it‘s not possible (the space may be insufficient) then the figure will appear at the topof the page. It is recommended to use more than one positioning parameter to prevent unexpected results.
It is possible to insert several images in one figure, each one with its own reference and label
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\begin{figure}[h]
\begin{subfigure}{0.5\textwidth}
\includegraphics[width=0.9\linewidth, height=5cm]{lion-logo}
\caption{Caption1}
\label{fig:subim1}
\end{subfigure}
\begin{subfigure}{0.5\textwidth}
\includegraphics[width=0.9\linewidth, height=5cm]{mesh}
\caption{Caption 2}
\label{fig:subim2}
\end{subfigure}
\caption{Caption for this figure with two images}
\label{fig:image2}
\end{figure}
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semper.
First, you must import the package subcaption by adding to the preamble
\usepackage{subcaption}
then you can use the environment \subfigure that takes one parameter, the width of the figure. This environment must be used inside a figure environment, captions and labels can be set to each subfigure.
Note:The \subfigure</cont> command doesn‘t work with Beamer nor Beamerposter
The package wrapfig provides a useful feature, text can be floated around the images.
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\begin{wrapfigure}{l}{0.25\textwidth}
\includegraphics[width=0.9\linewidth]{lion-logo}
\caption{Caption1}
\label{fig:subim1}
\end{wrapfigure}
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adipiscing elit. Duis fringilla tristique neque. Sed interdum
First import the package wrapfig by adding
\usepackage{wrapfig}
to the preamble.
After that you can use the environment <code>wrapfig, it takes two parameters that are passed inside braces: the alignement that can be l, r, c, i or o; this letters stand for left, right, centre, inner and outer (the last two intended for two-sided documents). The second parameter is the width of the figure, in the example is 0.25 the width of the text. See the reference guide for a list of possible length units.
Options for table positioning are similar to those available for figures
Default position of the tabular environment is centre.
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\arrayrulecolor[HTML]{DB5800}
\begin{tabular}{ |s|p{2cm}|p{2cm}| }
\hline
\rowcolor{lightgray} \multicolumn{3}{|c|}{Country List} \\hline
Country Name or Area Name& ISO ALPHA 2 Code &ISO ALPHA 3 \\hline
Afghanistan & AF &AFG \\rowcolor{gray}
Aland Islands & AX & ALA \Albania &AL & ALB \Algeria &DZ & DZA \American Samoa & AS & ASM \Andorra & AD & \cellcolor[HTML]{AA0044} AND \Angola & AO & AGO \\hline
\end{tabular}
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elit. Duis fringilla tristique neque. Sed interdum libero ut metus.
Pellentesque placerat. Nam rutrum augue a leo. Morbi sed elit sit
amet ante lobortis sollicitudin.
To learn about how to create tables see the Tables article.
The table environment is intended to automatically position tables so they fit nicely in the flow of your document.
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adipiscing elit. Duis fringilla tristique neque. Sed interdum
libero ut metus. Pellentesque placerat. Nam rutrum augue a leo.
Morbi sed elit sit amet ante lobortis sollicitudin.
\begin{table}[ht]
\arrayrulecolor[HTML]{DB5800}
\centering
\begin{tabular}{ |s|p{2cm}|p{2cm}| }
\hline
\rowcolor{lightgray} \multicolumn{3}{|c|}{Country List} \\hline
Country Name or Area Name& ISO ALPHA 2 Code &ISO ALPHA 3 \\hline
Afghanistan & AF &AFG \\rowcolor{gray}
Aland Islands & AX & ALA \Albania &AL & ALB \Algeria &DZ & DZA \American Samoa & AS & ASM \Andorra & AD & \cellcolor[HTML]{AA0044} AND \Angola & AO & AGO \\hline
\end{tabular}
\caption{Table inside a floating element}
\label{table:ta}
\end{table}
Praesent in sapien. Lorem ipsum dolor sit amet, consectetuer
adipiscing elit. Duis fringilla tristique neque. Sed interdum
libero ut metus. Pellentesque placerat. Nam rutrum augue a leo.
Morbi sed elit sit amet ante lobortis sollicitudin.
A position parameter, inside brackets, can be passed to the table environment. This parameter can take the next values:
| Parameter | Position |
|---|---|
| h | Place the float here, i.e., approximately at the same point it occurs in the source text (however, not exactly at the spot) |
| t | Position at the top of the page. |
| b | Position at the bottom of the page. |
| p | Put on a special page for floats only. |
| ! | Override internal parameters LaTeX uses for determining "good" float positions. |
| H | Places the float at precisely the location in the LATEX code. Requires the float package. This is somewhat equivalent to h!. |
You can set more than one value in the parameter, for instance, if you write [ht] LATEX will try to position the table here, but if it‘s not possible (the space may be insufficient) then the table will appear at the top of the page. It is recommended to use more than one positioning parameter to prevent unexpected results.
Notice also the command \centering. This changes the alignment of the table within its container to centreinstead of the default left.
If your table don‘t take all available space and you want to put text next or before it, is possible with the package wraptable.
Praesent in sapien. Lorem ipsum dolor sit amet, consectetuer
adipiscing elit. Duis fringilla tristique neque. Sed interdum
libero ut metus. Pellentesque placerat. Nam rutrum augue a leo.
Morbi sed elit sit amet ante lobortis sollicitudin.
\begin{wraptable}{r}{8cm}
\arrayrulecolor[HTML]{DB5800}
\centering
\begin{tabular}{ |s|p{2cm}| }
\hline
\rowcolor{lightgray} \multicolumn{2}{|c|}{Country List} \\hline
Country Name or Area Name& ISO ALPHA 2 Code \\hline
Afghanistan & AF \\rowcolor{gray}
Aland Islands & AX \Albania &AL \Algeria &DZ \American Samoa & AS \Andorra & \cellcolor[HTML]{AA0044} AD \Angola & AO \\hline
\end{tabular}
\caption{Table inside a floating element}
\label{table:ta}
\end{wraptable}
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adipiscing elit. Duis fringilla tristique neque. Sed interdum
libero ut metus. Pellentesque placerat. Nam rutrum augue a leo.
Morbi sed elit sit amet ante lobortis sollicitudin...
First, import the package
\usepackage{wraptable}
then you can use the environment wraptable which takes two parameters: The first one is the alignment that can be l, r, c, i or o for left, right, centre, inner and outer respectively. The second one is the width of the table container, keep in mind that this latter parameter must be the same as the width of the table, otherwise things may not be properly aligned.
LATEX units and lengths
| Abbreviation | Definition |
|---|---|
| pt | A point, is the default length unit. About 0.3515mm |
| mm | a millimetre |
| cm | a centimetre |
| in | an inch |
| ex | the height of an x in the current font |
| em | the width of an m in the current font |
| \columnsep | distance between columns |
| \columnwidth | width of the column |
| \linewidth | width of the line in the current environment |
| \paperwidth | width of the page |
| \paperheight | height of the page |
| \textwidth | width of the text |
| \textheight | height of the text |
| \unitleght | units of length in the picture environment. |
from: https://www.sharelatex.com/learn/Positioning_images_and_tables
LaTeX排版设置图表的位置 Positioning images and tables
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原文地址：http://www.cnblogs.com/GarfieldEr007/p/5588905.html
