Text Formatting ⇒ Bad vertical Alignment in two-columned List

[Hermano]

Hi,

I want to have two columns with only the first column to be itemized. This works fine but the vertical alignment of my rows is messed up for both columns when I use subscript text (see the fourth row below the limit symbol in attachment). How can I solve this without having this vertical alignment problem between the columns?

This is my code:

Code: Select all

\begin{tabular}{p{0.5\textwidth}p{0.5\textwidth}}
  \begin{itemize} 
    \item [(i)] \hspace{5mm} $\theta_i$,~$Y = L/(2r)$ 
    \item [(ii)] \hspace{5mm} $0 \leq \theta \leq 2\pi$,~$Y = 0$ and $L/r$ 
    \item [(iii)] \hspace{5mm} $0 \leq Y \leq L/r$ 
    \item [(iv)] \hspace{5mm} $0 \leq \theta \leq 2\pi$,~$Y = L/(2r)$ 
  \end{itemize} &
  \begin{itemize} 
    \item [ ] $P = P_t$ (feedholes)
    \item [ ] $P = 1$ (ambient) 
    \item [ ] $\displaystyle P_{\theta = 0} = \lim_{\theta \to 2\pi}{\theta}$ (continuity) 
    \item [ ] $\partial P / \partial Y = 0$ (symmetry) 
  \end{itemize} \\
\end{tabular}

[localghost]

A math environment like alignat* from amsmath might be better for this kind of alignment.

Code: Select all

\documentclass[11pt]{article}
\usepackage[T1]{fontenc}
\usepackage{mathtools}    % loads »amsmath«
\usepackage{xfrac}        % nice looking fractions
\usepackage{lmodern}

\begin{document}
  \begin{alignat*}{5}
    (\text{i})   && \theta_i &,\  Y &&= \sfrac{L}{2r} & P &= P_t & \text{(feedholes)}\\
    (\text{ii})  &&\qquad 0 \leq \theta \leq 2\pi &,\ Y &&= 0 \text{ and } \sfrac{L}{r} & P &= 1 & \text{(ambient)} \\
    (\text{iii}) && 0 \leq Y \leq \sfrac{L}{r} &&&&\qquad P_{\theta=0} &= \lim_{\theta\to 2\pi}{\theta} &\qquad \text{(continuity)} \\
    (\text{iv})  && 0 \leq \theta \leq 2\pi &,\ Y &&= \sfrac{L}{2r} & \sfrac{\partial P}{\partial Y} &= 0 & \text{(symmetry)}
  \end{alignat*}
\end{document}

And by the way, feedback on proposals to many of your other questions is highly appreciated. It would allow to discuss an issue and show that you notice proposals.


Further reading:

• The »Math mode« document.

Thorsten

[Hermano]

Dear Thorsten,

Thank you for your answer. In meantime, I solved my problem by using three columns instead of two, while I increased the row height. To this end, I did not have to use the itemize environment in the first column.

This is the code that solved my problem:

Code: Select all

\begin{table}[H]
\renewcommand{\arraystretch}{2}
\centering
\begin{tabular}{rp{5cm}l}
(i) & $\theta_i$,~$Y = L/(2r)$ & $P = P_t$ (feedholes) \\
(ii) & $0 \leq \theta \leq 2\pi$,~$Y = 0$ and $L/r$ & $P = 1$ (ambient) \\
(iii) & $0 \leq Y \leq L/r$ & $\displaystyle P_{\theta = 0} = \lim_{\theta \to 2\pi} P_{\theta}$ (continuity) \\
(iv) & $0 \leq \theta \leq 2\pi$,~$Y = L/(2r)$ & $\partial P / \partial Y = 0$ (symmetry\footnotemark) \\
\end{tabular}
\end{table}

[localghost]

Think about using the {array} environment for the math stuff instead of {tabular}.

[Johannes_B]

Using a math-environment to typeset math doesn't just seem like a good idea, it is a good idea. Thorsten knows what he is doing, i would have suggested the same. Why would you use a table (floating environment) for this?

Please also inform yourself how to prepare a Minimal Working Example. This gives the possibiblity to click on open in writelatex directly above the code. This shows the output in seconds, and possible solutions can be tested quickly.

Are you aware of the possibility to number equations automatically in your document?

Best regards
Johannes