Riskmanagement Matrix to plot risks in a grid of consequences of occurence

riskmgmmatrix.tex

\usepackage{tikz} %the package that allows all the magic
%document start etc... 


\begin{figure}[h]

\begin{tikzpicture}
[every node/.style=
{minimum width=3.95 cm, %each field is about 4 cm wide 
minimum height= 1.95cm,	%each field is about 2 cm high 
outer sep=0pt},
cross/.style %style the grid
{draw, 
cross out,
minimum size=2*(#1-1pt), inner sep=0pt, outer sep=0pt}, x=2 cm, y=1 cm]

    % draw grid
    \draw [color=black]  [step=2] (0,0) grid (10,10);
    
    % Color the fields and add text (the text is in german "niedrig" = "low"; "mittel" = "medium"; "hoch" = "high"; "sehr hoch" = "very high") 
    
    \node[fill=green!75!black] at (1,1) {niedrig};
    \node[fill=green!75!black] at (3,1) {niedrig};
    \node[fill=green!75!black] at (5,1) {niedrig};
    \node[fill=green!75!black] at (7,1) {niedrig};
    \node[fill=green!75!black] at (9,1) {niedrig};
    
    \node[fill=green!75!black] at (1,3) {niedrig};
    \node[fill=green!75!black] at (3,3) {niedrig};
    \node[fill=yellow] at (5,3) {mittel};
    \node[fill=yellow] at (7,3) {mittel};
    \node[fill=yellow] at (9,3) {mittel};
    
    \node[fill=yellow] at (1,5) {mittel};
    \node[fill=yellow] at (3,5) {mittel};
    \node[fill=orange] at (5,5) {hoch};
    \node[fill=orange] at (7,5) {hoch};
    \node[fill=orange] at (9,5) {hoch};

    \node[fill=yellow] at (1,7) {hoch};
    \node[fill=orange] at (3,7) {hoch};
    \node[fill=red!70!black] at (5,7) {sehr hoch};
    \node[fill=red!70!black] at (7,7) {sehr hoch};
    \node[fill=red!70!black] at (9,7) {sehr hoch};
    
    \node[fill=yellow] at (1,9) {mittel};
    \node[fill=orange] at (3,9) {hoch};
    \node[fill=red!70!black] at (5,9) {sehr hoch};
    \node[fill=red!70!black] at (7,9) {sehr hoch};
    \node[fill=red!70!black] at (9,9) {sehr hoch};
    
	% insert dots for each risk; 01/02 etc are the risk numbers can be subst. for anything else 
    \foreach \Point/\Risk in 
    	{(2.5,9.5)/{01}, 
    	(1.5,5.5)/{02},
    	(6.5,6.5)/{03},
    	(2.5,7.5)/{04},
    	(2.5,3.5)/{05}}
    \draw[fill=white]\Point circle (3.5pt) node[above left, style={minimum width = 0,minimum height = 0} ] {$\Risk$};
    	% draw axis
		\draw[->,thick] (0,0) -- (10.3,0) node[style={minimum width = 0,minimum height = 0}, below] {$Wahrscheinlichkeit$}; % likelyhood
    	\draw[->,thick] (0,0) -- (0,10.3) node[style={minimum width = 0,minimum height = 0}, above] {$Auswirkung$};			% consequences
	\end{tikzpicture}
\end{figure}