formattingmath-modetrees
I am trying to print a worksheet for the math class I'm teaching and I was wondering if anyone can specifically help me out in two areas.
a) How do I get the output BAL1L2 without the slant?
$BAL_{1}L_{2}$
b) And is there is an easier code out there to create tree diagrams for probability?
Magic of \ooalign:
\documentclass{article}
\usepackage{graphicx}
\newcommand{\trinum}[1]{\mathpalette\dotrinum{#1}}
\newcommand{\dotrinum}[2]{{%
\vphantom{\triangle}%
\ooalign{%
$#1\triangle$\cr\hidewidth\scaleraise{$#1#2$}\hidewidth\cr
}%
}}
\newcommand{\scaleraise}[1]{%
\raisebox{.2\height}{\scalebox{0.5}{#1}}%
}
\begin{document}
Works fine in default environment
\[
\trinum{1} \qquad \trinum{2} \qquad \trinum{3}
\]
Slightly shifted when used in Huge environment:
{\Huge
\[
\trinum{1} \qquad \trinum{2} \qquad \trinum{3}
\]
}
Slightly shifted when used in tiny environment:
{\tiny % I know, it's too small to read, but just used as a check
\[
\trinum{1} \qquad \trinum{2} \qquad \trinum{3}
\]
}
Messed up when used as subscript or super script
\[
\trinum{1} \qquad x_{\trinum{1}} \qquad x^{\trinum{1}}
\]
\end{document}
I left your original text, except for bracing the subscript and superscript. See https://tex.stackexchange.com/a/22375/4427 for details on \ooalign
Once having made clear that
\mspace can only be used in math mode (and requires amsmath),\mspace only accepts a length expressed in mu units (but the plus and minus components also accept fil[ll] units) or in terms of a mu based parameter (\thinmuskip, \medmuskip and \thickmuskip),\hspace doesn't accept mu units,we can describe the differences.
Both commands insert space that will not interfere with the automatic spacing between atoms. However,
mu unit for \mspace depend on the current math style;em or ex unit for \hspace depends on the text font current at the time the formula began.In particular, given that 18mu corresponds to the value of 1em in the symbol font (math group 2), the following two formulas will give quite different result
$\scriptscriptstyle a\mspace{18mu}b$
$\scriptscriptstyle a\hspace{1em}b$
This is because the former uses the em in \scriptscriptfont2 (default for 10pt size is cmsy5) whereas the latter uses the em in the standard text font (default cmr10).
Best Answer
You can use
\(\mathrm{BAL_{1}L_{2}\)to remove the slant.The best tree-diagram program out there is
pgf-tkiz, but you could also hack out something withdirtree.More on probability trees with pgf at this link: Example: Probability tree
Some dirtree stuff here: (Semi-)automatic directory-tree in LaTeX