# How to align captions in twoside documents?

While typesetting an illustrated book, I mostly use SCfigures. But in some cases I want the picture to be "wrapped" in the text, but with a caption on the side, so I use picins (see MWE below).

With SCfigures I can choose the options innercaption and ragged, so the caption will align towards the picture, nonetheless if it is on a left or a right page.

Why won't piccaption do this, or better, what will I have to do in order to have it do this? The justification-option of the caption-package doesn't help it even produces errors in combination with sidecap.

    \documentclass{scrbook}
\usepackage{
graphicx,
float,
picins,
wrapfig,
lipsum}
\usepackage[
format=plain,
singlelinecheck=false,
skip=2mm,
labelformat=simple,
labelsep=newline,
aboveskip=15pt
%   justification=raggedright
]{caption}
\usepackage[
innercaption,
wide,
ragged
]{sidecap}
\sidecaptionvpos{figure}{t}
\listfiles

\begin{document}
\lipsum[1-2]

\begin{SCfigure}[3][t]
\caption{1st\\SCfigure\\picture right, ragged left}
\rule{10mm}{4mm}
\end{SCfigure}

\pagebreak\lipsum[1-2]

\begin{SCfigure}[3][t]
\rule{10mm}{4mm}
\caption{2nd\\SCfigure\\picture left, ragged right}
\end{SCfigure}

\pagebreak\lipsum[1-2]

\piccaptiontopside
\piccaption{3rd\\Caption of picins\\picture right, why not ragged left?}
\parpic[r,t]{\rule{10mm}{4mm}}

\pagebreak\lipsum[1-2]

\piccaptiontopside
\piccaption{4th\\Caption of picins\\picture left, ragged right}
\parpic[l,t]{\rule{10mm}{4mm}}

\end{document}

• Where is picins.sty? – Ryan Mar 30 '15 at 23:51
• Line 5 in the code-box. Or did I misunderstand you? – michael Mar 31 '15 at 6:01
• I mean where can people answering find the .sty file itself? – Ryan Mar 31 '15 at 6:14
• The package is available at CTAN: ctan.org/pkg/picins – michael Mar 31 '15 at 12:42

I think I finally found a way: The Stackexchange-question

\raggedouter to typeset marginal text in twoside book

provides a definition for "raggedouter" captions, I turned it into "raggedinner".

Thank you very, very much!

NB: Be careful to use the right order 1. declare the command, 2. call the caption package, 3. declare the caption justification, and 4. use it in captionsetup:

\usepackage{changepage}
\newcommand{\raggedinner}{%
\checkoddpage%
\ifoddpage%
\RaggedLeft%
\else%
\RaggedRight%
\fi%
}
\strictpagecheck
\usepackage{caption}
\DeclareCaptionJustification{raggedinner}{\raggedinner}
\captionsetup{justification=raggedinner}