You can make use of this answer, but you need to adjust the code a bit to get the axis labels right. Note that you need to use \addplot+ in order to have the different colors selected automatically.
\documentclass{beamer} \usepackage{pgfplots, pgfplotstable} \pgfplotsset{compat=1.18} \begin{document} \begin{frame} \pgfplotstableread[row sep=\\,col sep=&]{ Source & Emission & Type\\ Meat & 51.1 & Animal\\ Eggs & 32.3 & Animal\\ Vegetable & 19.1 & Plant\\ Legumes & 24.3 & Plant\\ Milk & 18.5 & Animal\\ Cereals & 14.3 & Plant\\ }\proteintable \begin{tikzpicture} \begin{axis}[ xbar, width=5cm, symbolic y coords={% Meat,% Eggs,% Vegetable,% Legumes,% Milk,% Cereals% }, ytick={% Meat,% Eggs,% Vegetable,% Legumes,% Milk,% Cereals% }, xmin=0, xlabel={Protein calories (\%)}, legend style={at={(0.8,0.85)}, anchor=center, legend columns=2, draw=none}, xmajorgrids=true, xminorgrids=true, grid style=dashed, label style={font=\scriptsize}, yticklabel style={xshift=0.6ex, text width=1.7cm, font=\scriptsize, align=right}, ticklabel style={font=\scriptsize}, bar shift=0pt, ] \foreach \i in {0,...,5} { \addplot+[x filter/.expression={\coordindex==\i ? x : nan}] table[y=Source, x=Emission] {\proteintable}; } \end{axis} \end{tikzpicture} \end{frame} \end{document}
To colorize the bars according to the value in the Type column, some trickery is needed to get the expansion in the right order:
\documentclass{beamer} \usepackage{pgfplots, pgfplotstable} \pgfplotsset{compat=1.18} \colorlet{Animal}{red} \colorlet{Plant}{green} \begin{document} \begin{frame} \pgfplotstableread[row sep=\\,col sep=&]{ Source & Emission & Type\\ Meat & 51.1 & Animal\\ Eggs & 32.3 & Animal\\ Vegetable & 19.1 & Plant\\ Legumes & 24.3 & Plant\\ Milk & 18.5 & Animal\\ Cereals & 14.3 & Plant\\ }\proteintable \begin{tikzpicture} \begin{axis}[ xbar, width=5cm, symbolic y coords={% Meat,% Eggs,% Vegetable,% Legumes,% Milk,% Cereals% }, ytick={% Meat,% Eggs,% Vegetable,% Legumes,% Milk,% Cereals% }, xmin=0, xlabel={Protein calories (\%)}, legend style={at={(0.8,0.85)}, anchor=center, legend columns=2, draw=none}, xmajorgrids=true, xminorgrids=true, grid style=dashed, label style={font=\scriptsize}, yticklabel style={xshift=0.6ex, text width=1.7cm, font=\scriptsize, align=right}, ticklabel style={font=\scriptsize}, bar shift=0pt, ] \foreach \i in {0,...,5} { \pgfplotstablegetelem{\i}{Type}\of{\proteintable} \edef\temp{ \noexpand\addplot+[draw=\pgfplotsretval, fill=\pgfplotsretval!50, x filter/.expression={\noexpand\coordindex==\noexpand\i ? x : nan}] table[y=Source, x=Emission] {\noexpand\proteintable}; } \temp } \end{axis} \end{tikzpicture} \end{frame} \end{document}
Actually, I would probably so this with TikZ directly anyways, as it would be much easier to customize everything:
\documentclass{beamer} \usepackage{pgfplotstable} \pgfplotsset{compat=1.18} \colorlet{Animal}{red} \colorlet{Plant}{green} \begin{document} \begin{frame} \pgfplotstableread[row sep=\\,col sep=&]{ Source & Emission & Type\\ Meat & 51.1 & Animal\\ Eggs & 32.3 & Animal\\ Vegetable & 19.1 & Plant\\ Legumes & 24.3 & Plant\\ Milk & 18.5 & Animal\\ Cereals & 14.3 & Plant\\ }\proteintable \pgfplotstablegetrowsof{\proteintable} \pgfmathtruncatemacro\mydatarowcount{\pgfplotsretval-1} \begin{tikzpicture}[scale=0.1] \foreach \row in {0,...,\mydatarowcount} { \pgfplotstablegetelem{\row}{Source}\of{\proteintable} \node[left] at (0,{\row*10+5}) {\pgfplotsretval}; \pgfplotstablegetelem{\row}{Type}\of{\proteintable} \colorlet{barcolor}{\pgfplotsretval} \pgfplotstablegetelem{\row}{Emission}\of{\proteintable} \filldraw[barcolor, fill opacity=0.5] (0,{\row*10+1}) rectangle +(\pgfplotsretval,8); } \draw (0,{(\mydatarowcount+1)*10}) |- (60,0) node[pos=0.75, below=20pt] {Protein calories (\%)}; \foreach \tick in {0,10,...,60} { \draw (\tick,0) -- +(0,5pt) node[pos=0, below] {\tick}; } \end{tikzpicture} \end{frame} \end{document}
