What can cause \ref{} of LaTex output a [??] [closed] - latex

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I include a figure like this
\begin{figure*}
\begin{center}
\includegraphics[width=6.7in]{pic/recall_details.png}
\caption{ Recalls of test query MB002-MB049}
\label{ recall_details}
\end{center}
\end{figure*}
And then I refer it using \ref{recall_details}. Instead of getting numbers like 1, 2, I get ??. Literally I mean ??. What is wrong with my codes? How to make the references show correctly?

You should "compile" your latex code twice to get numbers instead of question marks

The issue is that you're referencing \ref{recalls_details}, but you've defined \label{ recalls_details}. That extra space before recalls_details is what gets you ?? instead of the figure number. You should either change the \ref to \ref{ recalls_details} or the \label to \label{recalls_details}.
On another note, I suggest you add a modifier at the start of the label, such as fig: in this case: \label{fig:recalls_details}. This is useful when you have different types of labels (e.g. to sections, sec:, and to equations, eqn:).
The bottom line is to always use the exact string you give within the \label{} in the relevant \ref{}.

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A conditional formatting rule where the cell will be highlighted if it also appears in a list [closed]

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Closed 4 years ago.
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The rule that works is:
=MATCH (B1, A2:A6, 0)
Problem is, it only works for one column at a time (B, in this case). I need it to work across a whole range (B1:Z100).
The end result should look like this:
How can I fix this?
You need to fix your list range with dollar signs so when you extend the conditional formatting across the whole range, it still looks the value up in the same list:
=match(B2,$A$2:$A$6,0)
You can do this by modifying your formula slightly.
=match(B1,$A$1:$A,0)
Produced this output:
In my example, I selected the range for conditional formatting B1:G6. You need to make your own range.
The formula starts at B1 ( moving through all cells in the range) and the comparison table is fixed as ColA.
Let me know if this is what you want...

How can I capitalize the first letter while using '\cref'? [closed]

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I use package cleveref to refercence a figure or table in latex.
\usepackage{hyperref}
\usepackage{cleveref}
\cref{sim_figure}
The result is some like fig. 1, table I.
However, my expected result is Fig. 1 or Table I which is required by IEEEtran. How can I capitalize the first letter?
This is clearly outlines in the cleveref documentation.
You can either use \Cref, or pass the package option capitalise:
\documentclass{ieeetran}
\usepackage{hyperref}
\usepackage[capitalise]{cleveref}
\begin{document}
See \cref{fig:myfigure} or \Cref{fig:myfigure}.
\begin{figure}
\caption{Some figure}\label{fig:myfigure}
\end{figure}
\end{document}
If you wish to customize the way \Cref prints (output Fig. rather than Figure), add
\Crefname{figure}{Fig.}{Figs.}% {<type>}{<singular>}{<plural>}

How to delete text in all occurences of a specific tag in Latex [closed]

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In my latex document I have use the tag \sout , to strike out some texts, in many places. Is there a one-shot way to delete the text in all the occurrences of the tag along with the tag ?
You could redefine the way \sout works by including the following in your document preamble:
\renewcommand{\sout}[1]{\unskip}
Here's an example illustrating the effect:
\documentclass{article}
\usepackage{ulem}% http://ctan.org/pkg/ulem
\begin{document}
Here is some \sout{text} stuff.
\renewcommand{\sout}[1]{\unskip}
Here is some \sout{text} stuff.
\end{document}
If you're using an editor that allows for searching with regular expressions, then you could do a find for the regular expression \\sout\{[^\}]+\} (note that this is untested) and replace with an empty string or space.

input a figure between title and body in twocolumn latex form [closed]

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I'm using a Latex to write a small paper using CVPR template.
I'd like to put a figure between my title+name and body(which consists with two columns) like many CVPR papers do, but I don't find the way to do that.
I tried,
\begin{figure*}
\begin{center}
\fbox{\rule{0pt}{2in} \rule{.9\linewidth}{0pt}}
\end{center}
\caption{some caption..}
\label{fig:short}
\end{figure*}
but it turned out figure-star only displays it's figure at the top of next page,
and when I just use figure like \begin{figure}[htb], it's only located one of those two columns.
Does anyone know how to put a long figure between my title+name and body context?
Thanks.
You don't mention anything about inserting a date in your title. So, why not use the date to store your image:
\documentclass[twocolumn]{article}
\usepackage{mwe}% http://ctan.org/pkg/mwe
\title{My Title}
\author{A.\ Uthor}
\date{\includegraphics[height=2in]{example-image}}
\begin{document}
\maketitle
\lipsum[1-4]
\end{document}
The mwe package provides the example image (via graphicx) and dummy text (via lipsum).

margins of book class in latex [closed]

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I would know which are the margins (in meters) top,right,bottom and left, default assigned for bookclass. there is a command or a way to know them?
It depends on whether you want to include the header/footer and possibly even if you use twoside document. Perhaps the following minimal working example can be a start:
\documentclass{book}
\usepackage{layouts}% http://ctan.org/pkg/layouts
\begin{document}
\pagevalues
\end{document}
uses the layouts package to produce
All units are printed in points by default, and there are 0.0351459 points per cm. Note that LaTeX does not use metres as a valid length.

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