I have two lines of text written in Lyx. I'm trying to center it without placing extra vertical space between lines.
I selected the text, then went to Menu > Edit > Paragraph Settings. There, I can either remove spacing between lines or center the lines. But I can't do both of it at the same time.
The codes generated by Lyx are below for both two cases.
Centered, but there is space between lines:
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[a4paper]{geometry}
\geometry{verbose,tmargin=1cm,bmargin=1cm,lmargin=1cm,rmargin=1cm,headheight=0cm,headsep=0cm,footskip=0cm}
\pagestyle{empty}
\setlength{\parskip}{0bp}
\setlength{\parindent}{0pt}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{babel}
\begin{document}
\noindent \begin{center}
Hello
\par\end{center}
\noindent \begin{center}
World
\par\end{center}
There is no space, but not centered either:
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage[a4paper]{geometry}
\geometry{verbose,tmargin=1cm,bmargin=1cm,lmargin=1cm,rmargin=1cm,headheight=0cm,headsep=0cm,footskip=0cm}
\pagestyle{empty}
\setlength{\parskip}{0bp}
\setlength{\parindent}{0pt}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{setspace}
\usepackage{babel}
\begin{document}
\begin{singlespace}
\noindent Hello
\noindent World
\end{singlespace}
Looking at these sources, I can feel that it should have been something like
\begin{singlespace}
\noindent \begin{center} Hello \end{center}
\noindent \begin{center} World \end{center}
\end{singlespace}
but as you know, user is not allowed to edit the source directly in Lyx.
How do I do it in proper way?