3

Kindly help this messy tikz flow chart.

\documentclass{beamer}
    \usetheme{CambridgeUS}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows}
\tikzstyle{block} = [rectangle, draw, text width=10em, text centered, fill=yellow!80]
\tikzstyle{mycircle} = [circle, draw, text width=7em, text centered, fill=red!30]
\begin{document}
\begin{frame}
\begin{tikzpicture}[node distance=4.5cm, auto, >=stealth]
     \centering
\node [block](child){\par {Early life{\begin{itemize}
\item Genetic
\item Environmental
\end{itemize}}}};

\node [block] (psych)[right of = child]{\large {Psychoscial factors}{\begin{itemize}
\item life stress
\item Psychological stress
\item coping
\item social support
\end{itemize}}};

\node [block](physiology)[below of = psych]{Physiology {\begin{itemize}
\item Motility
\item Sensation
\item Inflammation
\item Altered bacterial
\item flora
\end{itemize}}};

\node [mycircle](FGID)[right of = physiology]{FGID};
%path
\draw[->](child)--(psych);
\draw[->] (child)--(physiology);
\draw[<->](psych)--(physiology);
\draw [<->](physiology)--(FGID);
\draw [<->](psych)--(FGID);
\end{tikzpicture}
\end{frame}
\end{document}

enter image description here

Vaibhav
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1 Answers1

7

Besides the things I already commented on, here are a few other things I’d consider:

Setting a fixed with makes the nodes having them the same width but also creates problem for very long words in the itemize environment. In addition to that the itemize environment introduces a rather high horizontal white space in front of the bullet. (Similar things happen in Saving a list in a re-usable box.)

I would avoid itemize and reproduce the behavior with a simply tabular environment (see my answer on the linked question) which inserts the bullet on its own.

For a more pleasing output I center the first line (kind of a header, isn’t it?) and add additional vertical space. The rectangle split shape might help here.

The needed options are:

  • shape=rectangle split,
  • rectangle split parts=2: we want two parts,
  • rectangle split part align={center,left}: the first part is centered, the second part is left-aligned.
  • rectangle split draw splits=false: by default the shape has lines between the separate parts, this disables them.

In the second example, I have used my positioning-plus library to place the psych and the FGID node vertically centered to the other nodes.

The first example needs the positioning library (which is loaded by positioning-plus so it is not loaded explicitly).

Code

\documentclass{beamer}
\usepackage{tikz,array}
\usetikzlibrary{positioning-plus,arrows,shapes.multipart}
\tikzset{
  block/.style={
    shape=rectangle split,
    draw,
    rectangle split part align={center,left},
    rectangle split parts=2,
    rectangle split draw splits=false},
  Circle/.style={shape=circle, draw, align=left}}
\newcommand*{\itemizeTabular}[2][l]{%
  \begin{tabular}{!{\kern\tabcolsep\usebeamertemplate{itemize item}}#1@{}}#2\end{tabular}}
\begin{document}
\begin{frame}\centering
\begin{tikzpicture}[auto, thick, >=stealth]
\node[block] (child) {%
  Early life\nodepart{two}
  \itemizeTabular{Genetic\\Environmental}};
\node[block, right=of child] (psych) {%
  Psychoscial factors\nodepart{two}
  \itemizeTabular{life stress\\Psychological stress\\coping\\social support}};
\node[block, below=of psych] (phys) {%
  Physiology\nodepart{two}
  \itemizeTabular{Motility\\Sensation\\Inflammation\\Altered bacterial\\flora}};

\node[Circle, right=of phys](FGID) {FGID};

\path[->] (child) edge (psych)
                  edge (phys);
\path[<->] (psych) edge (phys)
                   edge (FGID)
            (phys) edge (FGID);
\end{tikzpicture}
\end{frame}
\begin{frame}\centering
\begin{tikzpicture}[auto, thick, >=stealth]
\node[block] (psych) {%
  Psychoscial factors\nodepart{two}
  \itemizeTabular{life stress\\Psychological stress\\coping\\social support}};
\node[block, below=of psych] (phys) {%
  Physiology\nodepart{two}
  \itemizeTabular{Motility\\Sensation\\Inflammation\\Altered bacterial\\flora}};

\node[block,left=of (phys)(psych)] (child) {%
  Early life\nodepart{two}
  \itemizeTabular{Genetic\\Environmental}};

\node[Circle, right=of (phys)(psych)](FGID) {FGID};

\path[->] (child) edge (psych)
                  edge (phys);
\path[<->] (psych) edge (phys)
                   edge (FGID)
            (phys) edge (FGID);
\end{tikzpicture}
\end{frame}
\end{document}

Output

enter image description hereenter image description here

Community
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Qrrbrbirlbel
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  • Would you like to comment out what these terms mean? rectangle split part align={center,left}, rectangle split parts=2, rectangle split draw splits=false}, Also on the difference between right=of and right of= – Vaibhav Aug 09 '13 at 18:19
  • How can I put a text "Gut brain interaction " around arrow between psychosocial and physiology – Vaibhav Aug 09 '13 at 18:22
  • is there a difference in ()--() and () edge() – Vaibhav Aug 09 '13 at 18:23
  • @user34083 -- and edge are very different. For once, -- only draws a straight line whereas edge works with the same options as to. Furthermore, edges are drawn separately (there are better examples to show this). \path (a) edge (b) edge (c); actually draws a line from (a) to (b) and from (a) to (c) (not from (b) to (c)). — How should the text Gut brain interaction be placed? – Qrrbrbirlbel Aug 09 '13 at 21:55
  • Gut brain interaction -vertically along the edge between physiology and psychosocial factors – Vaibhav Aug 10 '13 at 02:13
  • Error: I can't find file `tikzlibrarypositioning-plus.code.tex' ...{positioning-plus,arrows,shapes.multipart} Emergency stop ...{positioning-plus,arrows,shapes.multipart} – Vaibhav Aug 10 '13 at 02:22
  • @user34083 Gut brain interaction nearly has enough room to place it vertically without the nodes, but anyhow you can simply add a node to the edge: (node 1) edge node [options]{text} (node 2). — The positioning-plus library is not part of TikZ but my own, the link to is posted in the answer. Simply copy the file along your .tex or include it in the texmf path. Mind you, the file is not needed for the first TikZ picture but only for the second. – Qrrbrbirlbel Aug 10 '13 at 02:45