I would like to have something like on the picture for the layout of three images. I am in twocolumn class and I know or how to place two images one above the other or side by side but not how to do both operations at the same time. Particurarly I tried 'inserting' the code part wrote on :
Placing two images side by side in a twocolumn document (see the accepted answer)
into
\begin{figure}[h]
\centering
\begin{subfigure}[b]{0.49\textwidth}
\includegraphics[width=0.96\linewidth,clip]{apparatusXDET}
\caption{}
\label{fig:1}
\end{subfigure}
HERE, at this point I inserted the linked part
\end{figure}
Unfortunately it says that two packages (subcaption and subfigure) are not compatible one with each other. Anyone has a idea how to do it?
