Reducing size of Subfigure

Question

I have four sub figures put together (two by two) but I would like to make the top two subfigures smaller. How do I go up about doing this? This is what my current code looks like (see below) and my figures are pdfs that were cropped outside of LaTeX. I thought maybe trim might be the way to go but I'm not sure. Thank you in advance
begin{figure}
     centering
     begin{subfigure}[t]{0.48textwidth}
         centering
         includegraphics[width=textwidth]{Alpha 25 -1.6 Cropped.pdf}
         label{fig:Alpha}
     end{subfigure}
     quad
     %hfill
     begin{subfigure}[t]{0.48textwidth}
         centering
         includegraphics[width=textwidth]{V 25 -1.6 Cropped.pdf}
         label{fig:Forward Speed}
     end{subfigure} 
    begin{subfigure}[t]{0.48textwidth}
         centering
         includegraphics[width=textwidth]{Pitch Angle 25 -1.6.pdf}
         label{fig:theta}
     end{subfigure}
     %hfill
     quad
    begin{subfigure}[t]{0.48textwidth}
         centering
         includegraphics[width=textwidth]{Pitch Rate 25 -1.6.pdf}
         label{fig:q}
     end{subfigure}
    caption{$alpha$, V, $theta$ and $q$ bifurcation diagrams.}
    label{fig:25 -1.6} 
end{figure}

Simon Dispa · Answer

The size of the figures can be controlled by the subfigure argument.
Being the normal size of them equal to textwidth,  writing   begin{subfigure}[t]{0.30textwidth} will scale them to 0.3 of their original width. To center them insert a hspace equal to half of the remaining space (0.4textwidth in this case).
You need to have  keepaspectratio in the includegraphics to ...  well,  to keep the aspect ratio of the imported images while being expanded to textwidth.

documentclass[12pt,a4paper]{article}

usepackage{subcaption} %  added <<<<<<<<<<<<<<<<

usepackage{graphicx}

begin{document}    
    
begin{figure}
    centering
    begin{subfigure}[t]{0.3textwidth}
        centering
        includegraphics[width=textwidth, keepaspectratio]{example-image-a}
        label{fig:Alpha}
    end{subfigure}
%   quad
    hspace*{.20textwidth} % half of the free horizontal space
%   hfill
    begin{subfigure}[t]{0.3textwidth}
        centering
        includegraphics[width=textwidth, keepaspectratio]{example-image-a}
        label{fig:Forward Speed}
    end{subfigure} 
    begin{subfigure}[t]{0.48textwidth}
        centering
        includegraphics[width=textwidth, keepaspectratio]{example-image-b}
        label{fig:theta}
    end{subfigure}
    hspace{0.02textwidth}
    begin{subfigure}[t]{0.48textwidth}
        centering
        includegraphics[width=textwidth,  keepaspectratio]{example-image-b}
        label{fig:q}
    end{subfigure}
    caption{$alpha$, V, $theta$ and $q$ bifurcation diagrams.}
    label{fig:25 -1.6} 
end{figure}
    
end{document}

Reduced to 0.1textwidth. No problem with [t] apparent.

Zarko · Answer

labeling of subfigures hasn't sense since you not have captions for them
sub-images can be simple arrangement by use of tabular:

documentclass[12pt,a4paper]{article}
usepackage{graphicx}

begin{document}

begin{figure}
    centering
    begin{tabular}{cc}
includegraphics[width=0.2linewidth]{example-image-a}
    &   includegraphics[width=0.2linewidth]{example-image-a}
        
includegraphics[width=0.4linewidth]{example-image-b}
    &   includegraphics[width=0.4linewidth]{example-image-b}
     end{tabular}
caption{$alpha$, V, $theta$ and $q$ bifurcation diagrams.}
label{fig:25 -1.6}
end{figure}

end{document}

Reducing size of Subfigure

2 Answers

Add your own answers!

Ask a Question