I have three figures of width=4.0in and height=2.0in. There is a legend "south outside" of the figures. Anyways, I want to have all three figures on one page. If it's not possible, since they are too big, two figures on one page and the other on the next. However, when I simply include the graphics (code is provided at the end), then there is only one figure per page. And the rest of the page gets filled with text - which I don't want. I was thinking, maybe the subfigures environment would work? - But can subfigures be one below the other? Or are they always parallel?
\begin{figure}[t]
\centering
\input{power1}
\caption{Input power.}
\end{figure}
\begin{figure}[t]
\centering
\input{power2}
\caption{Output power}
\end{figure}
\begin{figure}[t]
\centering
\input{average}
\caption{Average}
\end{figure}