Take the 2-minute tour ×
TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

I need to modify how to draw DNA sequences. There is a function \DNASequence which does the job. It uses nodes of constant size. However, I need to put arbitrary text instead of only one letter in a cell. How to do it? I tried to modify original code but I don't know how to get the actual width of a node.

\documentclass[10pt]{beamer}
\usepackage[utf8]{inputenc} % Language = Spanish
\usepackage{color}
\usepackage{tikz}
\usetheme{Warsaw} 
\usecolortheme{whale}
\usepackage{xstring}
\usetikzlibrary{calc, arrows}

\newcommand*{\NodeSize}{0.5cm}%
\newcommand*{\YShiftBetweenRows}{-1cm}% Subsequent rows are shited down so they don't overlap
\tikzset{DNA Style/.style={minimum size=0.5cm, draw=gray, line width=1pt}}{}

\newlength{\YShift}% 
\newcounter{ColumnCounter}% Prefix for node labels

\setlength{\YShift}{0cm}% 
\setcounter{ColumnCounter}{0}
\newcounter{angle}
\setcounter{angle}{0}
%
\begin{document}
\newcommand*{\DNASequence}[2][Mark]{%
% http://tex.stackexchange.com/questions/12091/tikz-foreach-loop-with-macro-defined-list
\def\Sequence{#2}
\foreach [count=\xi] \Label/\Color in \Sequence {%
    \pgfmathsetmacro{\XShift}{\NodeSize*\xi}%
    \IfStrEq{\Color}{}{\def\Color{white}}{}
    \edef\NodeName{#1-\arabic{ColumnCounter}}
    \node [DNA Style, fill=\Color, xshift=\XShift] (\NodeName) {\Label};
    \stepcounter{ColumnCounter}
} 
}%


\begin{frame}{bla}
\begin{tikzpicture}
\DNASequence{AAAA/cyan,, Big/orange,,,Small/blue,,G/red!25,,C/yellow};
\end{tikzpicture}
\end{frame}
\end{document}

EDIT: I need \DNASequence function which draws arbitrary text in the nodes.

share|improve this question
1  
Please add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. –  Jubobs May 6 '13 at 7:30
add comment

1 Answer

up vote 3 down vote accepted

The following is adapted from my earlier answer at Display issues drawing DNA sequences with TikZ:

enter image description here

Code:

\documentclass[border=3pt]{article}
\usepackage{tikz}
\usepackage{xstring,calc}
\usetikzlibrary{calc}

\newlength{\NodeSize}

\tikzset{DNA Style/.style={minimum size=0.5cm, draw=gray, line width=1pt, inner sep = 2pt}}{}


\newcounter{ColumnCounter}% Prefix for node labels


\newlength{\CurrentXPos}
\newcommand*{\PreviousNode}{}%
\newcommand*{\DNASequence}[2][Mark]{%
    % http://tex.stackexchange.com/questions/12091/tikz-foreach-loop-with-macro-defined-list
    \def\Sequence{#2}%
    \def\PreviousNode{}%
    \foreach [count=\xi] \Label/\Color in \Sequence {%
        \IfStrEq{\Color}{}{\def\Color{white}}{}
        \edef\NodeName{#1-\arabic{ColumnCounter}}
        \IfStrEq{\PreviousNode}{}{%
            \node [DNA Style, fill=\Color, anchor=west] (\NodeName) {\Label};
            \xdef\PreviousNode{\NodeName}%
        }{
            \node [DNA Style, fill=\Color, anchor=west, xshift=-\pgflinewidth] at (\PreviousNode.east)(\NodeName) {\Label};
            \xdef\PreviousNode{\NodeName}%
        }
        \stepcounter{ColumnCounter}
    } 
}%



\begin{document}
\begin{tikzpicture}
\begin{scope}
    \DNASequence{ABCC/magenta!20,,, XYZ/violet!30,,ABC/green, G/blue!20,, G/cyan!30,, C/olive};
\end{scope}
\begin{scope}[yshift=-1cm]
    \DNASequence{ABCDEFGHS/brown!20,, XYS/cyan!30,,, G/blue!20,, G/orange!30,, C/blue!30, X/red!20, Y/yellow!75};
\end{scope}
\end{tikzpicture}
\end{document}
share|improve this answer
    
NOOO, If you put many letters instead of one letter then everything shifts. –  msh May 6 '13 at 7:39
    
@msh: Have adapted it for your requirements... –  Peter Grill May 6 '13 at 8:00
    
Thanks! that is amazing! really =) –  msh May 6 '13 at 8:03
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.