La storia è finita così:
`
\begin{tikzpicture}
\tkzKiviatDiagramFromFile[
scale=.4,
label distance=1.4cm,
gap = 1,label space=1.6,
font = \footnotesize,
lattice = 10]{figure/tableae.dat}
\tkzKiviatLineFromFile[thick,
color = red,
mark = ball,
ball color = red,
mark size = 4pt,
fill = red!20]{figure/tableae.dat}{1}
\tkzKiviatLineFromFile[thick,
color = blue,
mark = ball,
ball color = blue,
mark size = 4pt,
fill =blue!20]{figure/tableae.dat}{2}
\tkzKiviatLineFromFile[thick,
color = black,
mark = ball,
ball color = black,
mark size = 4pt,
fill = black!20]{figure/tableae.dat}{3}
\draw[anchor=north, rounded corners] (5,10)rectangle(13,7);
\draw[black,ultra thick] (5.5,9.5)–(6.5,9.5) node[right,black] {\begin{footnotesize}CDA osservato\end{footnotesize}};
\draw[blue,ultra thick] (5.5,8.5)–(6.5,8.5)node[right,black] {\begin{footnotesize}CDA ideale\end{footnotesize}};
\draw[red,ultra thick] (5.5,7.5)–(6.5,7.5)node[right,black] {\begin{footnotesize}Narnali\end{footnotesize}};
\end{tikzpicture}
%dove tableae.dat è:
flag_moduli CDAoss CDAideale esempio
ADL 2.8 2.1 1.4
{etic 1} 2.1 7.8 0.2
{etic 2} 8.3 6.6 6.6
{etic 3} 5.0 5.7 1.5
`
grazie a tutti!
matilde