Span sideways figure over multiple pages

Question

I have to place two sidewaysfigure spanned each one on different pages.

\begin{sidewaysfigure}
 \ContinuedFloat
 \centering
 \subfloat[Change in ABC]{\label{fig:abc}\includegraphics[scale=0.6]{./abc.png}}
 \quad
 \subfloat[Change in DEF]{\label{fig:def}\includegraphics[scale=0.6]{./def.png}}
 \caption{Change in ABC and DEF}
 \label{fig:abcdef}
\end{sidewaysfigure}

But, when I use the above code, (or even when I change \quad to \clearpage) the figures appears in the same page.

Answer 1

It seems you are using \ContinuedFloat the wrong way. It is supposed to be used in the second of two figure environments, both of which contain \subfloats. See the example in section 2.2.3 The \ContinuedFloat Command of the subfigmanual.

A possible solution using sidewaysfigure would then be

\documentclass{article}
\usepackage{rotating}
\usepackage[lofdepth]{subfig}
\usepackage{kantlipsum}  % to create dummy text
\begin{document}
\listoffigures

\kant[1-3] 
\begin{sidewaysfigure}
\centering
 \subfloat[Change in ABC]{\label{fig:abc}\includegraphics{example-image-a}}
 \caption{Change in ABC and DEF\label{fig:abcdef}}
\end{sidewaysfigure}
\begin{sidewaysfigure}
 \ContinuedFloat
 \centering
 \subfloat[Change in DEF]{\label{fig:def}\includegraphics{example-image-b}}
 % \caption[]{Change in ABC and DEF} % Not necessary
  % optional argument empty to suppress duplicate entry in LoF
\end{sidewaysfigure}
\kant[4-5]
\end{document}

You must have a \caption in the first float/sidewaysfigure, but in the second (and any subsequent figures) it is not required. If you do include a \caption in these, add an empty optional argument, else the main figure is listed multiple times in the LoF.