floatspage-numberingrotating
The submission requirements require that any landscaped image have the page number on the 11" side of the page, at the bottom and centered. I can't figure out how to do this.
I'm using sidewaysfigure for my landscaped images. They are on their own page.
I would expect the figure to be the focal point of a sidewaysfigure. As such, the figure orientation should line up with the sidewaysfigure caption, which is rotated 90 degrees counter clock-wise. This seems to be your case already. However, I would rotate image elements so that they line up with whatever the image dictates. You don't want the reader to switch orientation for the caption, for the image, and for some of the overlaid text.
My reference is from a practical point of view; if the orientation of view is incorrect in portrait, a single turn (of the head) should result in the correct view (without any additional turns for text or explanation). That is, in its entirety, the figure is either viewed in portrait (upright) or landscape (rotated) "mode."
Publishers and journals have varying requirements regarding images in its submitted and eventual published form. This may even differ within journals from the same publisher. As such, I don't think there is a concrete standard or reference other than prevailing logic.
Another possible solution is the rotation by 90 degrees. In cases that you do not want to use landscape environment. A sample of output is provided underneath.
\documentclass{article}
\usepackage{graphicx} % angle=90 option provided by graphicx package.
\usepackage{wrapfig}
\usepackage{pdflscape} % landscape figures tables and caption
\usepackage{lipsum}% dummy text
\usepackage{rotating} %sideways table
\usepackage{float} % \begin{figure}[H] same as \begin{figure}[h!]
\begin{document}
\section{Figures}
%\lipsum % Text before (remove the % to view the picture with text)
\begin{figure}[ht]
\centering
\includegraphics[angle=0]{test.png}
\caption{This is a caption 0 degrees.}
\label{fig:test:1}
\end{figure}
%\lipsum % Text between (remove the % to view the picture with text)
\begin{figure}[ht]
\centering
\includegraphics[angle=90]{test.png} % angle here 45/90/180 what ever
\caption{This is a caption 90 degrees.}
\label{fig:test:2}
\end{figure}
%\lipsum % Text after
\end{document}
I found the example Landscape figure in LaTeX and converted to the output: 
Another possible solution would be the minipage. Sample of the output is provided below:
\documentclass[a4paper,12pt]{article}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{rotating}
\usepackage{lipsum}
\begin{document}
\section{My sideways figure}
\lipsum[2]
\begin{figure}[h!]
\centering
\begin{minipage}[b][5cm][c]{0.5\textwidth}
\begin{turn}{90}
\centering
\includegraphics{test.png}
\end{turn}
\end{minipage}
\hspace{-3cm}
\begin{turn}{90}
\begin{minipage}[b][5cm][c]{0.35\textwidth}
\caption{This is a caption.}
\label{fig:image}
\end{minipage}
\end{turn}
\end{figure}
\lipsum[1]
\end{document}
I found some information from Rotating: Sideways figure with Section title. You can always modify the code based on your needs. The output of the code is: 
.
Personally I prefer the first sample, but depends your code and the expected output. Just try both and observe which one fits your needs.
Update:
I was sure that if I look my old files I could find a working example. Approximately a year ago that I started working with LaTeX I had the same idea with you to create a landscape picture (due to size) but I also wanted to have the section and text inside. Well I had found a solution but for different ways did not work for me but maybe it works for you. Although I do not recommend this solution to be used with text due to the difference text width (because of landscape). You can somehow suppress the document to fit the appropriate length but the result based on my criteria was not satisfying. A working example is provided underneath with the code:
\documentclass[a4paper,11pt]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{wrapfig}
%\usepackage{chngpage}
%\usepackage{geometry} %\Change page size for floats
\usepackage{pdflscape} %\landscape latex
\usepackage{lipsum}% dummy text
\begin{document}
%\lipsum % Text before (remove the % to view the picture with text)
%\newgeometry{margin=1cm}
\begin{landscape}
\section{Land Scape Figure}
\lipsum[2]
\begin{figure}[hb]
%\begin{adjustwidth}{-0.1cm}{-0.1cm}
% {
\centering
\includegraphics{test.png} % angle here 45/90/180 what ever
\caption{This is a caption of a landscape figure}
\label{fig:test}
% }
% \end{adjustwidth}
\end{figure}
\lipsum[2]
\thispagestyle{empty}
\end{landscape}
%\restoregeometry
%\lipsum % Text after (remove the % to view the picture with text)
\end{document}
I have added several other "code tricks" that I managed to combine while I was implementing my solution based on my needs. I mean geometry package (very useful for really big figures, ganttcharts etc. The adjustwidth command to center a really big figure, ganttchart etc. Just play with the code and you will find many interesting things. This is a sample of the output:
So in conclusion to your question. Yes it is possible to add a section in landscape with a figure and text in the same page.
Best Answer
Some extra packages are needed, although it is possible:
floatpagfor specifying page styles for "ordinary" floats; andfancyhdrfor easily defining page stylesThe newly created
floatpagepage style is created and used as\thisfloatpagestyleinsidesidewaysfigure(provided by therotatingpackage). The footer is subsequently made of aright-aligned box of zero height (\smashed) with\thepagepushed up to the middle of the text block (\footskip+.5\textheight) and rotated by 90 degrees (\rotatebox{90}).lipsumwas merely used to populate the document with dummy text, Lorem Ipsum style.