I am wondering how to make a graph vertically centered in a slide. The graph is drawn using tikz. The code is below. Thank you very much!
\documentclass[usenames,dvipsnames,xcolor=table]{beamer}
\mode<presentation>
{
\usetheme{AnnArbor} % or try Darmstadt, Madrid, Warsaw, ...
\usecolortheme{wolverine} % or try albatross, beaver, crane, ...
\usefonttheme{default} % or try serif, structurebold, ...
\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{caption}[numbered]
}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage{datetime}
\usepackage{caption}
\usepackage{subfigure}
\usepackage{comment}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{hyperref}
\definecolor{plum(traditional)}{rgb}{0.56, 0.27, 0.52}
\definecolor{darkpastelgreen}{rgb}{0.01, 0.75, 0.24}
\definecolor{hotpink}{rgb}{1.0, 0.41, 0.71}
\definecolor{lavenderindigo}{rgb}{0.58, 0.34, 0.92}
\definecolor{mygray1}{gray}{0.8}
\definecolor{mygray2}{gray}{0.6}
\definecolor{mygray3}{gray}{0.4}
\definecolor{mygray4}{gray}{0.2}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[style=authoryear]{biblatex}
\addbibresource{Distraction_slides_reference.bib}
\usepackage{tikz}
\usetikzlibrary{patterns,arrows,decorations.pathreplacing,calc,intersections,through,backgrounds}
\usepackage{slashed}
\usepackage{upgreek}
\newdimen\XCoord
\newdimen\YCoord
\newcommand*{\ExtractCoordinate}[1]{\path (#1); \pgfgetlastxy{\XCoord}{\YCoord};}%
\newtheorem{proposition}{Proposition}
\newtheorem{assumption}{Assumption}
\newtheorem{axiom}{Axiom}
\newtheorem{definition}{Definition}
\newtheorem{theorem}{Theorem}
\newtheorem{lemma}{Lemma}
\newtheorem{proposition}{Proposition}
\newtheorem{assumption}{Assumption}
\newtheorem{remark}{Remark}
\newtheorem{conjecture}{Conjecture}
\DeclareMathOperator{\argmax}{arg,max}
\providecommand{\ux}[1]{#1}
\renewcommand{\ux}[1]{\underline{#1}}
\setbeamertemplate{theorems}[numbered]
\setbeamercovered{transparent}
\title{A}
\author{B}
\institute{C}
\date{09/03/2021}
\begin{document}
\begin{frame}{}
\begin{figure}[H]
\centering
\begin{tikzpicture}[xscale=0.6,yscale=0.6]
\draw [fill] (-11.5,6) circle [radius=0.7];
\draw [fill=gray] (-10,6) circle [radius=0.45];
\draw [fill=gray] (-8.8,6) circle [radius=0.45];
\draw [fill=gray] (-7.6,6) circle [radius=0.45];
\draw [fill=gray] (-6.4,6) circle [radius=0.45];
\draw [fill] (-3.5,6) circle [radius=0.7];
\draw [fill=gray] (0,2.4) circle [radius=0.45];
\draw [fill=gray] (2,2.4) circle [radius=0.45];
\draw [fill=gray] (4,2.4) circle [radius=0.45];
\draw [fill=gray] (6,2.4) circle [radius=0.45];
\draw (0,7.8) -- (-3,6.2);
\draw (0,7.8) -- (3,6.2);
\draw (3,6.2) -- (1,4);
\draw (3,6.2) -- (5,4);
\draw (1,4) -- (0,2.8);
\draw (1,4) -- (2,2.8);
\draw (5,4) -- (4,2.8);
\draw (5,4) -- (6,2.8);
\end{tikzpicture}
\end{figure}
\end{frame}
Here is the output for the codes of Holger Karl on 2021/9/2:
