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Replace last character of every second line

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# 1  
Old 10-14-2010
Replace last character of every second line
Hi all.

I wonder if this possible.... any help advice is very much appreciated..

I n a shell script I create a latex file that looks like this

\documentclass{article}
\usepackage{graphics}
\begin{document}
\begin{figure}
\begin{center}
\begin{tabular}{cc}

\resizebox{60mm}{!}{\includegraphics{e20011730124.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730225.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730326.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730428.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730529.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730631.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730732.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730834.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730935.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011731036.eps}} &

\end{tabular}
\caption{This is sample figures.}
\label{test4}
\end{center}
\end{figure}
\end{document}

Now I want to change this file so that it looks like as shown below. The highlighted part, I change every second line to replace the '&' by the '\\' chanracter

\documentclass{article}
\usepackage{graphics}
\begin{document}
\begin{figure}
\begin{center}
\begin{tabular}{cc}

\resizebox{60mm}{!}{\includegraphics{e20011730124.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730225.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730326.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730428.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730529.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730631.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730732.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730834.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730935.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011731036.eps}} \\

\end{tabular}
\caption{This is sample figures.}
\label{test4}
\end{center}
\end{figure}
\end{document}

Any one has an idea please help!
Malandisa
# 2  
Old 10-14-2010
What about using code tags for a start?
# 3  
Old 10-14-2010
vbe,

I appreciate your advice, I am very new to forums and I see people post things here in nicer ways but I had no idea how to do that. Just now after your reply I am looking through here and I see there is something I can do to make my post nicer and more professional.

Thanks you for the advise. and here my questions perhaps in a nicer way...


Hi all.

I wonder if this possible.... any help advice is very much appreciated..

I n a shell script I create a latex file that looks like this
Code:
\documentclass{article}
\usepackage{graphics}
\begin{document}
\begin{figure}
\begin{center}
\begin{tabular}{cc}

\resizebox{60mm}{!}{\includegraphics{e20011730124.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730225.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730326.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730428.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730529.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730631.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730732.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730834.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730935.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011731036.eps}} &

\end{tabular}
\caption{This is sample figures.}
\label{test4}
\end{center}
\end{figure}
\end{document}

Now I want to change this file so that it looks like as shown below. The highlighted part, I change every second line to replace the '&' by the '\\' character

Code:
\documentclass{article}
\usepackage{graphics}
\begin{document}
\begin{figure}
\begin{center}
\begin{tabular}{cc}

\resizebox{60mm}{!}{\includegraphics{e20011730124.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730225.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730326.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730428.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730529.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730631.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730732.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011730834.eps}} \\
\resizebox{60mm}{!}{\includegraphics{e20011730935.eps}} &
\resizebox{60mm}{!}{\includegraphics{e20011731036.eps}} \\

\end{tabular}
\caption{This is sample figures.}
\label{test4}
\end{center}
\end{figure}
\end{document}


Any one has an idea please help!
Malandisa
# 4  
Old 10-14-2010
Code:
sed '/\\resizebox/{n;s/&$/\\\\/}' infile

Last edited by Scrutinizer; 10-14-2010 at 02:46 PM.. Reason: Removed backslash in front of the & (superfluous)
# 5  
Old 10-14-2010
Try this:
Code:
awk '
/\\begin{tabular}/{f=1} 
f && /resizebox/ && c++%2 {$NF="\\\\"}
f && /\\end{tabular}/{f=0;c=0} 
1' file

or maybe:

Code:
awk '/resizebox/&&c++%2{$NF="\\\\"}1' file

# 6  
Old 10-14-2010
Maybe this:

Code:
awk 'BEGIN {countRow=1} !/resize/ {print $0} /resize/ {if((countRow%2)!=0){print $1 " & "}else{print $1 " \\\\ "} countRow++}' infile

# 7  
Old 10-14-2010
Quote:
Originally Posted by Scrutinizer
Code:
sed '/\\resizebox/{n;s/\&$/\\\\/}' infile

Just in case there are not modulo-two resizebox lines, and in pretty indented form with shell stuff on different lines than sed stuff:

Code:
sed '
  /\\resizebox/{
    n
    s/\(\n\\resizebox.*\)\&$/\1\\\\/
   }
 ' infile
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