Is it possible to renew the bmatrix environment to have alignment?
I would like the following vectors to show aligned:
\begin{bmatrix}
-0.505 & \\
-0.141 & \\
0.144 & \\
0.839 & \\
\end{bmatrix}
[Tex/LaTex] Align values in bmatrix
alignmatrices
Related Solutions
If you want to keep the alignment between the columns, use an array, with some enhancement:
\documentclass[12pt,a4paper]{article}
\usepackage{amsmath}
\usepackage{array}
\begin{document}
The reparameterisation is
\begin{equation}
\label{eqn:linear_ssK3}
\begin{array}{@{} >{{}}r<{{}} @{}r@{\,} *{5}{c} @{\,}l@{}}
s = & [ & s_1 & s_2 & s_3 & s_4 & s_5 & ]^T \\[1ex]
= & [ & \phi_1^{} & \phi_2^{} & \tau_{p3}^{} & \mu_p^{} & \mu_p^2 & ]^T.
\end{array}
\end{equation}
\end{document}
For a one off application that's good; if several similar displays are needed, you can define an environment and a command to ease the input:
\documentclass[12pt,a4paper]{article}
\usepackage{amsmath}
\usepackage{array}
\newenvironment{alignedrows}[1]
{\begin{array}{@{} >{{}}r<{{}} @{}r@{\,} *{#1}{c} @{\,}l@{}}}
{\end{array}}
\newcommand{\arow}[2]{%
#1 & [ & #2 & ]^T %
}
\begin{document}
The reparameterisation is
\begin{equation}
\label{eqn:linear_ssK3}
\begin{alignedrows}{5}
\arow{s=}{ s_1 & s_2 & s_3 & s_4 & s_5 } \\[1ex]
\arow{ =}{ \phi_1^{} & \phi_2^{} & \tau_{p3}^{} & \mu_p^{} & \mu_p^2 }.
\end{alignedrows}
\end{equation}
\end{document}
The output is the same.
The scanning for the optional argument confuses the alignment parser, due to the empty first cell in the matrix.
You're luckier with xparse:
\documentclass[a4paper,draft=true, headsepline=on, twoside
, 11pt,
]{scrbook}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath,xparse}
%matrix environment redef
\makeatletter
\RenewDocumentCommand\env@matrix{O{*\c@MaxMatrixCols c}}{%
\hskip -\arraycolsep
\let\@ifnextchar\new@ifnextchar
\array{#1}}
\makeatother
\begin{document}
\begin{align*}
\begin{bmatrix}
& b
\end{bmatrix}
\end{align*}
\end{document}
Best Answer
Example with matrix environment. Work also for bmatrix
Taken from here. Article by Stefan Kottwitz.
This code produces unaligned numbers:
However, the environment can be renewed to support alignment:
Now it is possible to do:
which outputs: