Ciao,
ecco l’esempio minimo:
`\documentclass[a4paper,11pt,titlepage,abstracton]{scrreprt}
\usepackage{natbib}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[italian]{babel}
\usepackage{amssymb,amsmath,amsthm}
\usepackage{mathrsfs,dsfont}
\usepackage{floatflt}
\usepackage{bbm}
\usepackage{lettrine}
\usepackage{upgreek}
\usepackage{multirow}
\usepackage{booktabs}
\usepackage{parallel}
\usepackage{caption}
\usepackage{siunitx}
\usepackage{listings}
\usepackage{pgfplots}
\lstset{language=Matlab,basicstyle=\small\ttfamily}
\usepackage[]{classicthesis-ldpkg}
\usepackage[eulerchapternumbers,subfig,eulermath]{classicthesis}
\usepackage[italian]{arsclassica}
\hypersetup{urlcolor=black,linkcolor=black,citecolor=black,pagecolor=black}
\pagestyle{scrheadings}
\captionsetup{labelfont=sl}
\setlength{\captionmargin}{.10\textwidth}
\newcommand{\è}{\`E}
\newcommand{\à}{\`A}
\newcommand{\ull}{\underline}
\newcommand{\dul}[1]{\underline{\underline{#1}}}
\newcommand{\ol}{\overline}
\newcommand{\dol}[1]{\overline{\overline{#1}}}
\newcommand{\ds}{\displaystyle}
\newcommand{\enep}{\text{e}}
\newcommand{\diff}{\mathop{}\!\mathrm{d}}
\newcommand{\imm}{\text{i}}
\newcommand{\cu}{\rightrightarrows}
\newcommand{\cp}{\rightarrow}
\newcommand{\immag}[1]{\text{Im}\left\{#1\right\}}
\newcommand{\real}[1]{\text{Re}\left\{#1\right\}}
\newcommand{\e}[1]{\cdot 10^{#1}}
\graphicspath{{../Immagini/}}
\setcounter{secnumdepth}{3}
\setcounter{tocdepth}{3}
\DeclareMathAlphabet{\mathpzc}{OT1}{pzc}{m}{it}
\DeclareMathOperator{\arcot}{arcot}
\DeclareMathOperator{\diverg}{div}
\DeclareRobustCommand{\vect}[1]{
\ifcat#1\relax
\boldsymbol{#1}
\else
\mathbf{#1}
\fi}
\DeclareRobustCommand{\mat}[1]{
\ifcat#1\relax
\boldsymbol{#1}
\else
\mathbf{#1}
\fi}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
xlabel=t ($\unit{s}$),
xmin=0,
xmax=1.1,
ylabel=$q_1(t)\unit{m}$,
ymin=0,
ymax=1.1,
title={Titolo},
grid=major,
legend style={anchor=north east}]
\addplot coordinates {
(0,0)
(1,1)
};
\legend{Legenda}
\end{axis}
\end{tikzpicture}
\end{document}`
Grazie.