Archive for the ‘ LaTeX ’ Category

xelatex: command not found when opening bookdown-demo

Author: Fabio Fajardo

Nov 29

After installing xelatex on Ubuntu with
sudo apt-get install texlive-xetex

I still received errors and needed

sudo apt-get install texlive-latex-extra
and
sudo apt-get install texlive-fonts-recommended

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Filed under: LaTeX

Xournal++

Author: Fabio Fajardo

Sep 11

Xournal++ is a hand note taking software written in C++ with the target of flexibility, functionality and speed. Stroke recognizer and other parts are based on Xournal Code, which you can find at sourceforge. For general usage, consult the User Manual. Answers to some common questions can be found in the FAQ.

Installing

The Xournal++ team officially supports a FlatHub release, which can be installed with

flatpak install flathub com.github.xournalpp.xournalpp

Note that for Xournal++ to work properly, you must have at least one GTK theme and one icon theme installed on Flatpak. To enable LaTeX support, you will also need to install the TeX Live extension:

flatpak install flathub org.freedesktop.Sdk.Extension.texlive

more information: https://github.com/xournalpp/xournalpp

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Filed under: LaTeX

Booktabs package and Sweave

Author: Fabio Fajardo

May 30

The booktabs package in latex makes really beautiful tables. This package provide some additional commands to enhance the quality of table in LaTeX, especially if there is math in your table that might run up against the regular \hline in the tabular environment. I created a table with the following code:

% file: example.Rnw
% require xtable
\documentclass{article}
\usepackage{booktabs}

\begin{document}

\begin{table}[!h] 
\centering
\caption{This is my table.}
\label{tab:table1}
<<mytable,echo=F,results=tex>>=
mat <- as.data.frame(matrix(runif(25),nrow=5))
colnames(mat) <- c("$\\alpha$","$\\beta$",
"$\\gamma$","$\\delta$","$\\frac{\\epsilon}{2}$")
rownames(mat) <- c(‘A’,’B’,’C’,’D’,’E’)
mat <- xtable::xtable(mat,digits=rep(5,ncol(mat)+1))
print(mat, 
sanitize.text.function = 
    function(x){x},
        floating=FALSE, 
        hline.after=NULL, 
        add.to.row=list(pos=list(-1,0,
        nrow(mat)), command=c('\\toprule\n',
        '\\midrule\n','\\bottomrule\n')))
@
\end{table}
\end{document}

You can use to compile:

$ R CMD Sweave example.Rnw
$ pdflatex example.tex

The definition of \toprule, \midrule and \bottomrule from
booktabs package is:

\def\toprule{\noalign{\ifnum0=`}\fi
  \@aboverulesep=\abovetopsep
  \global\@belowrulesep=\belowrulesep 
  \global\@thisruleclass=\@ne
  \@ifnextchar[{\@BTrule}{\@BTrule[\heavyrulewidth]}}

\def\midrule{\noalign{\ifnum0=`}\fi
  \@aboverulesep=\aboverulesep
  \global\@belowrulesep=\belowrulesep
  \global\@thisruleclass=\@ne
  \@ifnextchar[{\@BTrule}{\@BTrule[\lightrulewidth]}}

\def\bottomrule{\noalign{\ifnum0=`}\fi
  \@aboverulesep=\aboverulesep
  \global\@belowrulesep=\belowbottomsep
  \global\@thisruleclass=\@ne
  \@ifnextchar[{\@BTrule}{\@BTrule[\heavyrulewidth]}}

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Filed under: LaTeX, R

LaTeX word count: TeXcount

Author: Fabio Fajardo

Apr 6

TeXcount is a Perl script for counting words in LaTeX documents. It parses valid LaTeX documents counting words, headers, formulae (mathematics) and floats/begin-end groups.

To run the script, you can either download it and run it on your own computer, or you can use the web interface.

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Using pgfplots to make boxplots in LaTeX

Author: Fabio Fajardo

May 20

Here’s an example:

\documentclass{article}
\usepackage{pgfplots}
\usepackage{filecontents}

\begin{filecontents}{testdata.dat}
0 1 1.2 0.4 1.5 0.2
1 2 2.3 1.5 2.7 1
2 0.7 1.4 0.5 1.9 0.1
\end{filecontents}

\pgfplotsset{
    box plot/.style={
        /pgfplots/.cd,
        black,
        only marks,
        mark=-,
        mark size=1em,
        /pgfplots/error bars/.cd,
        y dir=plus,
        y explicit,
    },
    box plot box/.style={
        /pgfplots/error bars/draw error bar/.code 2 args={%
            \draw  ##1 -- ++(1em,0pt) |- ##2 -- ++(-1em,0pt) |- ##1 -- cycle;
        },
        /pgfplots/table/.cd,
        y index=2,
        y error expr={\thisrowno{3}-\thisrowno{2}},
        /pgfplots/box plot
    },
    box plot top whisker/.style={
        /pgfplots/error bars/draw error bar/.code 2 args={%
            \pgfkeysgetvalue{/pgfplots/error bars/error mark}%
            {\pgfplotserrorbarsmark}%
            \pgfkeysgetvalue{/pgfplots/error bars/error mark options}%
            {\pgfplotserrorbarsmarkopts}%
            \path ##1 -- ##2;
        },
        /pgfplots/table/.cd,
        y index=4,
        y error expr={\thisrowno{2}-\thisrowno{4}},
        /pgfplots/box plot
    },
    box plot bottom whisker/.style={
        /pgfplots/error bars/draw error bar/.code 2 args={%
            \pgfkeysgetvalue{/pgfplots/error bars/error mark}%
            {\pgfplotserrorbarsmark}%
            \pgfkeysgetvalue{/pgfplots/error bars/error mark options}%
            {\pgfplotserrorbarsmarkopts}%
            \path ##1 -- ##2;
        },
        /pgfplots/table/.cd,
        y index=5,
        y error expr={\thisrowno{3}-\thisrowno{5}},
        /pgfplots/box plot
    },
    box plot median/.style={
        /pgfplots/box plot
    }
}

\begin{document}
\begin{tikzpicture}
\begin{axis} [enlarge x limits=0.5,xtick=data]
    \addplot [box plot median] table {testdata.dat};
    \addplot [box plot box] table {testdata.dat};
    \addplot [box plot top whisker] table {testdata.dat};
    \addplot [box plot bottom whisker] table {testdata.dat};
\end{axis}
\end{tikzpicture}
\end{document}

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Sweave = R + LaTeX

Author: Fabio Fajardo

Nov 16

Sweave é uma ferramenta útil para a elaboração de relatórios usando de forma inteligente as funcionalidades do R e LaTeX.

Alguns tutoriais

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Filed under: LaTeX, R

LaTeX

Author: Fabio Fajardo

Oct 26

Install LaTeX in Ubuntu:

$ sudo apt-get install texlive texlive-full gedit-latex-plugin texlive-fonts-recommended latex-beamer texpower texlive-pictures texlive-latex-extra texlive-science texlive-publishers