Esta seccion esta dedicada a explicar como crear y personalizar un diagrama circular o de pastel en LaTeX.

\documentclass{article}
\usepackage[papersize={14cm,10cm}]{geometry}
\usepackage{tikz,color}
\usepackage{pgf-pie}
\usetikzlibrary{shadows}
\definecolor{crema}{HTML}{FFE3B3}
\definecolor{mostaza}{HTML}{FFC172}
\definecolor{verde}{HTML}{63CAA7}
\definecolor{azul}{HTML}{26798e}
\begin{document}

\begin{tikzpicture}
    \pie[rotate=180]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

% Rotacion
\begin{tikzpicture}
\pie[rotate=180]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

% varios graficos
\begin{tikzpicture}
    \pie[pos={0,0},radius=1]{10/, 20/, 30/, 40/}
    \pie[pos={2.7,0}, radius=1.5]{10/, 20/, 30/, 40/}
    \pie[pos={6.5,0}, radius=2]{10/, 20/, 30/, 40/}
\end{tikzpicture}

%colores
\begin{tikzpicture}
    \pie[color={crema, mostaza, verde,azul, cyan}]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

%resaltados
\begin{tikzpicture}
    \pie[explode={0,0.5,0,0}]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

% texto dentro
\begin{tikzpicture}
    \pie[text=inside]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

% lista de nombres
\begin{tikzpicture}
    \pie[text=legend]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

%sombreado
\begin{tikzpicture}
    \pie[style=drop shadow]{20/Samsung, 21/Huawei, 12/Apple, 8/Xiaomi, 40/Otros}
\end{tikzpicture}

\end{document}