Scaling tikz mindmaps within a beamer frame

Along this site it is possible to find a lot of questions and answers related to scaling tikzpictures. Here I add some references:

• How to scale a tikzpicture to \textwidth
• How to scale a tikzpicture including texts?
• Correctly scaling a tikzpicture

In particular:

• Beamer with Tikzpicture. How to change scale of picture and distance between lines of nodes? is related to tikzpictures in Beamer

and

• How to decrease the size of single node in mindmap? to adapt mindmap nodes size, which ultimately is what you need to fit the slide.

Starting from you example, it was sufficient to properly declare the distances of the various mindmap's levels by means of:

\tikzset{level 1 concept/.append style={font=\sf, sibling angle=90,level distance = 27mm}} \tikzset{level 2 concept/.append style={font=\sf, sibling angle=45,level distance = 17mm}} \tikzset{every node/.append style={scale=0.6}} 

and to change the position of the concepts Atmospheric Exchanges and Surface Energy: you gave them by hand, but they actually were placed too much far.

Notice also that I removed yours

\begin{figure}[h] \makebox[\textwidth][c]{ 

not really needed.

The complete code:

\documentclass[8pt,T]{beamer} \usepackage{comment} \usepackage{graphicx} \usepackage{tikz} \usetikzlibrary{mindmap,trees, backgrounds} \tikzset{level 1 concept/.append style={font=\sf, sibling angle=90,level distance = 27mm}} \tikzset{level 2 concept/.append style={font=\sf, sibling angle=45,level distance = 17mm}} \tikzset{every node/.append style={scale=0.6}} \useoutertheme{tree} \useinnertheme{rectangles} \setbeamercolor{normal text}{fg=white} \setbeamercolor{background canvas}{bg=black} \setbeamercolor{frametitle}{fg=white} \setbeamercolor{frametitle}{bg=black} \setbeamercolor{block body}{fg=black} \setbeamercolor{alertblock body}{fg=black} \setbeamertemplate{blocks}[default] \usecolortheme[named=orange]{structure} \usetheme{Antibes} \title{Bla bla} \author{George Azzari} \begin{document} \section{Introduction} \begin{frame} \begin{tikzpicture} %%%%%%%%%%%%%%% CANOPY STRUCTURE \path[mindmap,concept color=green!50!black, text=white] node[concept](struct) at (0,0){Canopy Structure} child[grow = -45, concept color = orange]{ node[concept](light){Light Interception} [clockwise from = 20] child{node[concept](alb) {Shortwave albedo}} child{node[concept](lw){Longwave Emissivity}} child{node[concept](shade){Shading}} } %---------------------------------------------------------- child[grow = 45, concept color = green!50!yellow!70!black]{ node[concept](func){Ecosystem Function} [counterclockwise from = -20] child{node[concept](massflu) {Mass Fluxes}} child{node[concept](biom) {Biomass}} child{node[concept](prod){Production}} child{node[concept](comp) {Competition}} } %---------------------------------------------------------- child[grow = 0, concept color = blue!60!white]{ node[concept](rough) at (0.5,0){Turbolence} child[grow = 20]{node[concept](lh){Latent Heat}} child[grow = -20]{node[concept](sh){Sensible Heat}}}; %---------------------------------------------------------- %%%%%%%%%%%% ATMOSPHERE \path[mindmap,concept color=blue!80!white!60!green, text=white] node[concept](atmos) at (8,2){Atmospheric Exchanges}; %%%%%%%%%%%% ENERGY \path[mindmap,concept color=red!50!black, text=white] node[concept](energy) at (8,-2){Surface Energy}; %%%%%%%%%%%%% MAKING SECONDARY CONNECTIONS \newcommand{\conngreentoorange}{to[circle connection bar switch color=from (green!50!yellow!70!black) to (orange)]} \newcommand{\connredtoorange}{to[circle connection bar switch color=from (red!50!black) to (orange)]} \newcommand{\connredtoblu}{to[circle connection bar switch color=from (red!50!black) to (blue!60!white)]} \newcommand{\connazuretoblu}{to[circle connection bar switch color=from (blue!80!white!60!green) to (blue!60!white)]} \newcommand{\connazuretogreen}{to[circle connection bar switch color=from (blue!80!white!60!green) to (green!50!yellow!70!black)]} \newcommand{\connazuretored}{to[circle connection bar switch color=from (blue!80!white!60!green) to (red!50!black)]} \newcommand{\connblutogreen}{to[circle connection bar switch color=from (blue!60!white) to (green!50!yellow!70!black)]} \begin{pgfonlayer}{background} %\draw [circle connection bar ] \path (func) \conngreentoorange (light); \path (energy)\connredtoorange (alb); \path (energy)\connredtoorange (lw); \path (energy)\connredtoblu (sh); \path (energy)\connredtoblu (lh); \path (atmos) \connazuretoblu (lh); \path (atmos) \connazuretoblu (sh); \path (atmos) \connazuretored (energy); \path (atmos) \connazuretogreen (massflu); \path (lh) \connblutogreen (massflu); \end{pgfonlayer} \end{tikzpicture} \end{frame} \end{document} 

The result: