# Latex \kbordermatrix with row labels on the right side

I'm needing to create a matrix enclosed with brackets [], not parentheses (), with row labels on right side. Is this possible using \kbordermatrix?

For instance, in the following:

\kbordermatrix{\mbox{}& C_1 & C_2& C_3\\
R_1&1&2&7\\
R_2&2&1&8
}


I would like the labels R_1 and R_2 to be on the right side of the matrix not the left.

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Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. –  Christian Hupfer Jul 25 '14 at 7:41

% arara: pdflatex

\documentclass{article}
\usepackage{blkarray}
\newcommand{\mLabel}[1]{\mbox{$\scriptstyle{#1}$}}

\begin{document}
$\begin{blockarray}{c@{}ccc@{\hspace{4pt}}cl} & \mLabel{C_1} & \mLabel{C_2} & \mLabel{C_3} & & \\ \begin{block}{[c@{\hspace{5pt}}ccc@{\hspace{5pt}}c]l} & 1 & 2 & 7 & & \mLabel{R_1} \\ & 2 & 1 & 8 & & \mLabel{R_2} \\ \end{block} \end{blockarray}$
\end{document}


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If you need it only for the 2x3 matrix:

\documentclass{article}
\usepackage{array}
\let\SC\scriptstyle
\def\Biggg#1{\makebox(0,0){\put(0,-20){\bigg#1}}}
\begin{document}
$\begin{array}{r@{\kern5pt}ccc@{}l>{\SC}l} & \SC C_1 &\SC C_2 &\SC C_3\\ \Biggg[ & 1 & 2 & 7 & \Biggg] & R_1 \\ & 2 & 1 & 8 & & R_2 \end{array}$

\end{document}


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