Change line spacing along the document in memoir class

Question

I'm using «memoir» class and I have to change the line-spacing in different paragraph.

I tried to resolve the problem like in Change line spacing inside the document but the answer does not apply in «memoir» class, since in this class the environment "spacing" remains undefined.

\documentclass[12pt,a4paper]{memoir} 
\usepackage{xcolor}
\usepackage{lipsum}
\usepackage{setspace}

\renewcommand{\baselinestretch}{1.5} 

\begin{document}
\lipsum[1]

{\begin{spacing}{1.0}\color{blue}
\lipsum[2]\end{spacing}
}

\lipsum[3]
\end{document}

Answer 1

Section 3.3.2 of the manual is devoted to this problem. First of all, memoir ignores \usepackage{setspace}, because it sets up its own methods.

\documentclass[12pt,a4paper]{memoir} 
\usepackage{xcolor}
\usepackage{lipsum}

\OnehalfSpacing

\begin{document}

\lipsum[1]

\begin{SingleSpace}\color{blue}
\lipsum[2]
\end{SingleSpace}

\lipsum[3]

\end{document}

The same with \DoubleSpacing instead of \OnehalfSpacing.

Answer 2

Please read the memoir documentation, in particular section 3.3.2 Double spacing. In your code change {spacing} to {Spacing} and don't use the setspace package.