I am using \if condition in a custom command in my LaTeX document. can i know how to do the if statement in the uploaded image

Question

\documentclass[a4paper,11pt]{article}
\usepackage{siunitx}
\usepackage{algorithm} 
\usepackage{algpseudocode} 
\usepackage{textcomp}
\usepackage{mathpazo}
\usepackage{eulervm}
\usepackage[utf8]{inputenc}
\usepackage{algorithmic}
\usepackage{ifthen}
\usepackage{amsmath}
\DeclareUnicodeCharacter{2212}{\textminus}% requires a Unicode capable editor
\sisetup{
   detect-mode,
   detect-family,
   detect-inline-family=math,}
\begin{document}
\begin{algorithm}
    \caption{PPO} 
    \begin{algorithmic}[1]
        \For {$i=1,2,\ldots ,m$}
        \EndFor
        \For {$i=1,2,\ldots,m$}
        \State $forbidden\_set\leftarrow\theta$
        \State ${u}\leftarrow\ {p}[i]$
        \State ${v\leftarrow\ {get}\_original\_node(u)}$
        \For {each node $s$ that adjacent to $u$}
        \IF{$c[$s$]!\= -1$} 
            \State ${v\leftarrow\ {get}\_original\_node(s)}$
            \State ${a\leftarrow\ Max}\rbra\_original\_node(u)}$
            \ENDIF  

            \State Run policy $\pi_{\theta_{old}}$ in environment for $T$ time steps
            \State Compute advantage estimates $\hat{A}_{1},\ldots,\hat{A}_{T}$
        \EndFor
        \State Optimize surrogate $L$ wrt. $\theta$, with $K$ epochs and minibatch size $M\leq NT$
        \State $\theta_{old}\leftarrow\theta$

\end{algorithmic} 

\end{algorithm}
\end{document}

score 0 · Accepted Answer · answered Mar 27 '21 at 18:18

You should not load algorithmic along algpseudocode: they are incompatible with each other.

You're using the former package's syntax, so stick with it and use \If{...}...\EndIf.

I also made several changes to the code, please check them carefully. I removed \rbra that doesn't appear anywhere; fix it.

\documentclass[a4paper,11pt]{article}
\usepackage{siunitx}
\usepackage{algorithm} 
\usepackage{algpseudocode} 
\usepackage{textcomp}
\usepackage{mathpazo}
\usepackage{eulervm}
\usepackage[utf8]{inputenc}
%\usepackage{algorithmic} %%%% NOT along algpseudocode
\usepackage{ifthen}
\usepackage{amsmath}
\DeclareUnicodeCharacter{2212}{\textminus}% requires a Unicode capable editor
\sisetup{
   detect-mode,
   detect-family,
   detect-inline-family=math,}
\begin{document}
\begin{algorithm}
\caption{PPO}
\begin{algorithmic}[1]
  \For {$i=1,2,\dots ,m$}
  \EndFor
  \For {$i=1,2,\dots,m$}
    \State $\mathit{forbidden_set}\leftarrow\theta$
    \State $u\leftarrow {p}[i]$
    \State $v\leftarrow \mathit{get_original_node}(u)$
    \For {each node $s$ that adjacent to $u$}
      \If{$c[s]\neq -1$} 
        \State $v\leftarrow \mathit{get_original_node}(s)$
        \State $a\leftarrow \mathit{Max_original_node}(u)$
      \EndIf
      \State Run policy $\pi_{\theta_{\mathrm{old}}}$ in environment for $T$ time steps
      \State Compute advantage estimates $\hat{A}{1},\dots,\hat{A}{T}$
    \EndFor
    \State Optimize surrogate $L$ wrt. $\theta$, with $K$ 
           epochs and minibatch  size $M\leq\nobreak NT$
    \State $\theta_{\mathrm{old}}\leftarrow\theta$
  \EndFor
\end{algorithmic}
\end{algorithm}
\end{document}

In order to fix the long line 15, you could do (wait till you're sure that the text is in final form)

    \State Optimize surrogate $L$ wrt. $\theta$, with $K$\hspace*{\fill}\linebreak
           \hspace*{3em}epochs and minibatch  size $M\leq NT$

This would yield

I am using \if condition in a custom command in my LaTeX document. can i know how to do the if statement in the uploaded image

1 Answers1