How can I plot Several figures with one caption in a two-column Latex document?

Hi Dear

I am tring to insert Several figures with one caption in a two-column Latex document as the figure given below but it does not work. Can anyone help me to do that please?

I will appriciate any help.

[Aisha Mohamed]

I used this link which work in one column Latex document, why it does not work with two column Latex document?

\begin{figure*}

\centering

\begin{subfigure}[t]{0.49\textwidth}

\centering

\includegraphics[width=\textwidth]{diract=0.png}

\caption{$f_k(z)$ and $f_b(z)$ representations of the states $| f\rangle $ and $\langle f |$ at $t=0$.}

% which at $t=0$ is given in the Eq(27).}

\label{fig:y equals x}

\end{subfigure}

\hfill

\begin{subfigure}[t]{0.50\textwidth}

\centering

\includegraphics[width=\textwidth]{diracexamle2kbnonperiodict=1.png}

\caption{$f_k(z)$ and $f_b(z)$ representations of the states $|f\rangle $

and $\langle f |$ at $t=1$.}

% which at $ t=0 $ is given in the Eq(81), by using Hamiltonian in Eq(101) that has the eigenvalues -5.7091, 0.0478, 3.6612, $t=1$.}

\label{fig:three sin x}

\end{subfigure}

\hfill

\begin{subfigure}[t]{0.49\textwidth}

\centering

\includegraphics[width=\textwidth]{diracexamle2kbnonperiodict=2.png}

\caption{$f_k(z)$ and $f_b(z)$ representations of the states $|f\rangle $

and $\langle f |$ at $t=2$.}

% which at $ t=0 $ is given in the Eq(81), by using Hamiltonian in Eq(6.46) that has the eigenvalues -5.7091, 0.0478, 3.6612, $t=2$.}

\label{fig:five over x}

\end{subfigure}

\hfill

\begin{subfigure}[t]{0.49\textwidth}

\centering

\includegraphics[width=\textwidth]{diracexamle2kbnonperiodict=pi.png}

\caption{$f_k(z)$ and $f_b(z)$ representations of the states $|f \rangle$ and $\langle f |$ at $t=\pi$.}

% which at $ t=0 $ is given in the Eq(81), by using Hamiltonian in Eq(6.46) that has the eigenvalues -5.7091, 0.0478, 3.6612, $t=\pi$}

\label{fig:three sin x}

\end{subfigure}

\hfill

\begin{subfigure}[t]{0.49\textwidth}

\centering

\includegraphics[width=\textwidth]{diracexamle2kbnonperiodict=2pi.png}

\caption{$f_k(z)$ and $f_b(z)$ representations of the states $|f\rangle $

and $\langle f |$ at $t=2\pi$}

% which at $ t=0 $ is given in the Eq(81), by using Hamiltonian in Eq(101) that has the eigenvalues -5.7091, 0.0478, 3.6612, $t=2\pi$. As we can see, the figures do not return to initial position at $t=0$ because the system is not periodic}

\label{fig:three sin x}

\end{subfigure}

\caption{ Time evolution of the $\mathcal{H}_{(2j+1)}$ system is described by the movement of the magnitude and the phase of Dirac contour representation

functions $f_k(z)$ and $f_b(z)$ of the states $|f \rangle$,

which at $ t=0 $ is given in the Eq(6.45), and $\langle f |$ by using Hamiltonian in Eq(6.44) that has the eigenvalues -5.7091, 0.0478, 3.6612.}

\label{fig:three graphs}

% \caption{Three simple graphs}

% \label{fig:three graphs}

\end{figure*}

I appreciate any help

[Dyuman Joshi]

How does this relate to MATLAB?

Answer 1

[Aisha Mohamed]

I solved this issue by using this package

\documentclass[twocolumn,12pt]{article}

\usepackage{graphicx}

\usepackage{subcaption}

and it work.