captionssubcaptionsubfloats
When using subfloat, the caption centers with regards to the figure width. However I want to center it with regards to the axes. How to horizontally shift the captions (manually) for all the subfloats in a figure environment, to center to axes?
(My figures are in PDF format.)
Here are some suggestions to fix your current situation:
Note the subfloat notation:
\subfloat[<LoF>][<subcaption>]{<body>}
Since your <body> consisted only of a \label command, the <subcaption> (actually, the <LoF> entry) had to wrap around something that is "very thin", causing it to not typeset properly. See page 4 of the subfig documentation for an explanation of this.
Also, the \label should be included in the <body>.
If you put the entire \subfloat within a fixed-width environment, the caption will wrap according to that width. This can be achieved via a minipage environment, for example. In the following minimal example, I've defined two new commands:
\vertfig[<subcaption>]{<body>}% For vertical figure placement
\horizfig[<subcaption>]{<body>}% For horizontal figure placement
that you can use to replace the traditional \subfloat. \vertfig typesets its contents in a 5in-width minipage, while \horizfig does so in a 3in-width minipage. Both dropped the second optional argument of \subfloat[..][..]{...}, since it didn't seem to matter to you.
As you can see, no fixed-width \captionsetup is required, since the captions wrap to the box they're contained in.
\documentclass[11pt]{article}
\usepackage[a3paper]{geometry}% http://ctan.org/pkg/geometry
\usepackage{graphicx}% http://ctan.org/pkg/graphicx
%\usepackage{caption}% http://ctan.org/pkg/caption
\usepackage{subfig}% http://ctan.org/pkg/subfig
\newsubfloat{figure}
\pagestyle{empty}% No header/footer
\newcommand{\vertfig}[2][]{%
\begin{minipage}{5in}\subfloat[#1]{#2}\end{minipage}}
\newcommand{\horizfig}[2][]{%
\begin{minipage}{3in}\subfloat[#1]{#2}\end{minipage}}
\begin{document}
\begin{figure}[ht]
\centering
\vertfig% \subfloat
[This is probably the biggest tiger you will ever see in your life.
The caption associated with this subfloat should span more than one
line even though the width of the contents is 5in.]
{\includegraphics[width=5in]{tiger}\label{fig:vizcardfront}}
\vertfig% \subfloat
[Data submission form on the back of the view guide.]
{\includegraphics[width=5in]{tiger}\label{fig:vizcardback}}
\caption{The visibility monitoring view guide.}\label{fig:viewcard}
\end{figure}
\begin{figure}[ht]
\centering
\horizfig%\subfloat
[Here is another picture of the tiger, this time a little smaller.
It is still very fierce-looking, right?]
{\includegraphics[width=3in]{tiger}\label{fig:plantcam}}
\hfill
\horizfig%\subfloat
[A HOBO$\textsuperscript{\textregistered}$ data logger for air and soil data.]
{\includegraphics[width=3in]{tiger}\label{fig:logger}}
\caption{Automatic data collection instruments.}\label{fig:autodata}
\end{figure}
\end{document}
geometry was merely used to set the paper size to a3paper.
You need to \protect the \subref command in the caption:
\caption{Phase noise variability: \protect\subref{signal_model} some text
\protect\subref{amplitude_mod} some other text}
MWE:
\documentclass{article}
\usepackage{graphicx}
\usepackage{subfig}
\begin{document}
\begin{figure}
\centering
\subfloat[][]{\includegraphics[scale=0.55]{example-image-a}\label{signal_model}}
\subfloat[][]{\includegraphics[scale=0.55]{example-image-b}\label{amplitude_mod}}
\caption{Phase noise variability: \protect\subref{signal_model} some text
\protect\subref{amplitude_mod} some other text}
\end{figure}
\end{document}
Best Answer
To shift the sub-captions to the left or right one could use the
margin=option offered by thecaptionpackage. The following example document will shift the sub-captions 2cm to the right:Please note the usage of the additional option
onesidewhich will make sure that the extra sub-caption margins will not be swapped intwosidedocuments.(Of course this trick will work in conjunction with the
subcaptionpackage as well.)