How can I type text above a matrix?

Question

I'm trying to write a matrix like the one in the image, but I don't know how to do it (I tried using the align environment, but I had no luck). Any help will be really appreciated. :)

Mico · Accepted Answer

Here's a solution that uses only some very basic LaTeX packages, along with center, tabular, and bmatrix environments. I've tried as much as possible to mimic the layout in the screenshot you posted.

documentclass{article}
usepackage{array,xcolor,amsmath,multirow}
begin{document}

begin{center}
begin{tabular}{@{} r @{} l c >{hspace{7mm}}l @{}}
& multicolumn{2}{c}{textcolor{cyan}{From:}} & 
& textcolor{cyan}{City} 
& textcolor{cyan}{Suburlap{rbs}} % ok, the use of 'rlap' is kludgy...
& textcolor{cyan}{To:} [0.75ex]
multirow{2}{*}{$M{=}$} 
& multicolumn{2}{@{}l}{multirow{2}{*}{%
    $begin{bmatrix} 
           0.95 & 0.03  
           0.05 & 0.97 
     end{bmatrix}$}}
& textcolor{cyan}{City} 
& & & textcolor{cyan}{Suburbs} 
end{tabular}
end{center}

end{document}

F. Pantigny · Answer

Here is a way to do that with {NiceTabular} of nicematrix.
You put all the elements (text and numbers) in a great array and you put the brackets where you want with the command SubMatrix in the CodeAfter.
With the key baseline, you put the baseline where you want (for the alignment with M=).
documentclass{article}
usepackage{nicematrix}

begin{document}

newcommand{cyan}{color{cyan}}

$M = begin{NiceTabular}{cc>{cyan}l}[baseline=line-4]
Block{1-2}{cyan From:} 
cyan City  & cyan Suburbs & To: 
$.95$ & $.03$ & City 
$.05$ & $.97$ & Suburbs 
CodeAfter SubMatrix[{3-1}{4-2}][slim]
end{NiceTabular}$

end{document}

You need several compilations (because nicematrix uses PGF/Tikz under the hood).

How can I type text above a matrix?

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