# [Tugindia] How to add tree type structure?

Wed Jul 23 04:20:41 CEST 2003

>>>>> "Kev" == Kev  <sooltaal at yahoo.com> writes:

Kev> Hello all, I am a college student, and a new user of
Kev> LateX2e. I am using MiKTeX and WinEdt. I am writing some
Kev> chemistry notes and wish to know how I can create a tree type
Kev> stucture such as this:

Kev>   |---Compound |--|
Kev>      |
Kev>      |--|
Kev>         |
Kev>         |....Compounds..

An elegant way would be to use pstricks or xypic macros.  However this
can be accomplished by an array construct as given below:

\arraycolsep2pt
\def\hr{\rule[.5ex]{2em}{.2pt}}
% define a horizonal rule

\def\vr{\vrule depth -.5ex height 10pt width .2pt}
% define a vertical rule

$\begin{array}{lllll} \vline\hr &\multicolumn{3}{l}{\mbox{Compounds}}\\ \vr\hr &\multicolumn{3}{l}{\mbox{Compounds}}\\ &\:\:\vline\hr &\multicolumn{3}{l}{\mbox{Radical}}\\ &\:\:\vr\hr &\multicolumn{3}{l}{\mbox{Radical}}\\ &&&\:\:\vr\ldots\ldots &\mbox{Atoms} \end{array}$

Best