Cfrgtkky

Could you please give me some advice about this situation?
Thank you so much.

I would like to move all the titles to the left.

But if we want to draw the following figure with 2 subfigures then we have to use packages "caption" and "subcaption", but these two packages will not allow us to move all the figure titles to the left.

documentclass[smallextended,referee,envcountsect]{svjour3}

smartqed

usepackage{graphicx}

usepackage[hyperfootnotes=false]{hyperref}

hypersetup{colorlinks=true,citecolor=blue,linkcolor=blue,urlcolor=blue}

usepackage{amsmath,amsxtra,amssymb,latexsym,amsfonts,amscd}

usepackage{multicol,color}

usepackage{float}

usepackage{soul}

usepackage{graphicx}

usepackage{caption}

usepackage{subcaption}

usepackage{pstricks-add}

usepackage{pgf,tikz}

usepackage{mathrsfs}

usetikzlibrary{arrows}

usepackage{amssymb}

usepackage{theorem}

usepackage{fancyhdr}



usepackage{tikz}

usepackage{enumerate}

usepackage[margin=1.1in]{geometry}

parskip 5pt

fancyfoot[C]{thepage}

setlength{textwidth}{6.31in}setlength{topmargin}{-0.25in}

setlength{textheight}{9.2in}setlength{oddsidemargin}{0in}

renewcommand{baselinestretch}{1.1}

renewcommand{headrulewidth}{0pt}

renewcommand{footrulewidth}{0pt}

defdisp{displaystyle}

begin{document}



begin{center}

begin{figure}[!tbp]

begin{subfigure}[b]{0.45textwidth}

definecolor{uuuuuu}{rgb}{0.26666666666666666,0.26666666666666666,0.26666666666666666}

definecolor{zzttqq}{rgb}{0.6,0.2,0.}

definecolor{ududff}{rgb}{0.30196078431372547,0.30196078431372547,1.}

begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=0.75cm,y=0.75cm]

clip(-5.039786976492287,-4.976475903092999) rectangle (5.225636493163389,4.854891605900701);

fill[line width=2.pt,color=zzttqq,fill=zzttqq,fill opacity=0.10000000149011612] (-2.9782972019669014,-3.011675055168333) -- (3.0217027980330986,-3.011675055168333) -- (3.021702798033099,2.9883249448316658) -- (-2.9782972019669005,2.988324944831667) -- cycle;

draw [line width=2.pt,color=zzttqq] (-2.9782972019669014,-3.011675055168333)-- (3.0217027980330986,-3.011675055168333);

draw [line width=2.pt,color=zzttqq] (3.0217027980330986,-3.011675055168333)-- (3.021702798033099,2.9883249448316658);

draw [line width=2.pt,color=zzttqq] (3.021702798033099,2.9883249448316658)-- (-2.9782972019669005,2.988324944831667);

draw [line width=2.pt,color=zzttqq] (-2.9782972019669005,2.988324944831667)-- (-2.9782972019669014,-3.011675055168333);

begin{scriptsize}

draw [fill=ududff] (-2.9782972019669014,-3.011675055168333) circle (2.5pt);

draw [fill=ududff] (3.0217027980330986,-3.011675055168333) circle (2.5pt);

draw [fill=uuuuuu] (3.021702798033099,2.9883249448316658) circle (2.5pt);

draw [fill=uuuuuu] (-2.9782972019669005,2.988324944831667) circle (2.5pt);

end{scriptsize}

end{tikzpicture}

vspace*{-0.1in}

caption{bf This is a square.}

label{picnew}

end{subfigure}

hfill

begin{subfigure}[b]{0.45textwidth}

definecolor{uuuuuu}{rgb}{0.26666666666666666,0.26666666666666666,0.26666666666666666}

begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=0.4cm,y=0.4cm]

clip(-10.437883908168581,-9.13468903671252) rectangle (10.578095056602637,9.583415234871898);

draw [line width=2.pt] (0.,0.) circle (2.4cm);

begin{scriptsize}

draw [fill=uuuuuu] (0.,0.) circle (2.0pt);

end{scriptsize}

end{tikzpicture}

vspace*{-0.1in}

caption{bf This is a circle.}

label{pic2a*}

end{subfigure}

caption{bf Geometry.}

end{figure}

end{center}



end{document}

you have more problems with your code:

• in preamble of your mwe you have some packages loaded twice


• document class svjour3 load graphicx, so you not need to load them (twice!)


• 
  tikz is not able to handle so accurate defined coordinates as you use. it is sufficient to round them to two decimals


• for your problem are relevant only the following packages: tikz, subcaption and hyperref.


• float environments should not be inside other environments like center or minipage ...


• for left align of caption and sub-captions use caption set up captionsetup{singlelinecheck=off}
  

edit:
mostly of topic ...

• your image code is really unnecessary complicated


• it is far more simple (to my experiences) for your geometric elements use shapes defined in tikz package (rectangle, circle`)


• for caption and sub-captions set up see documentations for caption and subcaption packages, both are part of your LaTeX installation


• definitions of your colors should be in document preamble


• changes in preamble are indicated by % <---
  

mwe, considering aforementioned, is:

documentclass[smallextended,referee,envcountsect]{svjour3}

usepackage[margin=1.1in]{geometry}

smartqed

usepackage{tikz}

usetikzlibrary{arrows}

definecolor{uuuuuu}{rgb}{0.26666666666666666,0.26666666666666666,0.26666666666666666}

definecolor{zzttqq}{rgb}{0.6,0.2,0.}

definecolor{ududff}{rgb}{0.30196078431372547,0.30196078431372547,1.}

usepackage{subcaption}

captionsetup{skip=0.5ex,           % <---

              font=bf,              % <---

              singlelinecheck=off}  % <---

captionsetup{skip=0.5ex}           % <---

captionsetup[subfigure]{skip=0ex}  % <---

defdisp{displaystyle}



usepackage[hyperfootnotes=false]{hyperref}

    hypersetup{colorlinks=true,

            citecolor=blue,

            linkcolor=blue,

            urlcolor=blue}



begin{document}

    begin{figure}[!htbp]

tikzset{% definiton of used styles

box/.style args = {#1/#2}{rectangle, draw=#1, fill=#1, minimum size=#2,

                          line width=2pt, fill opacity=0.1,

                          outer sep=0pt},

cir/.style args = {#1/#2/#3}{circle, draw=#1, fill=#2, minimum size=#3,

                             line width=2pt},

dot/.style = {circle, draw, thin, fill=#1,

              inner sep=0pt, outer sep=0pt, minimum size=5pt},

        }            

begin{subfigure}[b]{0.45linewidth}

        noindentbegin{tikzpicture}

node (s) [box=zzttqq/45mm] {};

foreach i/j in {north east/uuuuuu, north west/uuuuuu, 

                  south west/ududff, south east/ududff}

    node [dot=j] at (s.i) {};

    end{tikzpicture}

caption{bf This is a square.}

label{picnew}

    end{subfigure}

hfill

begin{subfigure}[b]{0.45linewidth}

    begin{tikzpicture}[x=0.4cm,y=0.4cm]

node (s) [cir=black/white/45mm] {};%(2.4cm);

node [dot=uuuuuu] {};

    end{tikzpicture}

caption{This is a circle.}

label{pic2a*}

end{subfigure}

caption{Geometry.}

end{figure}



end{document}