[Tex/LaTex] How to use fontspec to set normalsize to 11pt

fontsizeluatex

I'm writing a document where it is important that the font specification is times new roman and the font is 11pt.

This question Where and why does (LuaLa)TeX scale down the requested base font size? provides a discusseion regarding why this is so (geometric progression) and states that it's easy to change using fontspec but does not provide an example.

This answer https://tex.stackexchange.com/a/46089/89786 shows how it can be done with snippets of text. But I want to redefine \normalsize to be precisely 11.pt globally, but not the other fonts.

How do i do it? The following code shows that the \normalsize font is 10.95pt.

\documentclass[english,11pt]{article}
\usepackage[T1]{fontenc}
\usepackage{babel}

\makeatletter
\usepackage{mathptmx}% http://ctan.org/pkg/mathptmx
\usepackage{fontspec}
\newcommand\thefontsize[2]{{#1 The current font size is: #2 \f@size pt\par}}

\makeatother

\fontsize{11pt}{12pt}\selectfont 

\begin{document}
\thefontsize\tiny{tiny}
\thefontsize\scriptsize{scriptsize}
\thefontsize\footnotesize{footnotesize}
\thefontsize\small{small}
\thefontsize\normalsize{normalsize}
\thefontsize\large{large}
\thefontsize\Large{Large}
\thefontsize\LARGE{LARGE}
\thefontsize\huge{huge}
\thefontsize\Huge{Huge}
\end{document}

Best Answer

Change the LaTeX default to be 11 instead of 10.95. You may also want to do other roundings.

\makeatletter
\renewcommand\@xipt{11}
\renewcommand\@xviipt{17}
\renewcommand\@xxpt{20}
\renewcommand\@xxvpt{25}
\makeatother

\documentclass[11pt]{article}

\usepackage{mathptmx}% http://ctan.org/pkg/mathptmx
\usepackage{fontspec}

\makeatletter
\newcommand\thefontsize[2]{{#1 The current font size is: #2 \f@size pt\par}}
\makeatother

\begin{document}
\thefontsize\tiny{tiny}
\thefontsize\scriptsize{scriptsize}
\thefontsize\footnotesize{footnotesize}
\thefontsize\small{small}
\thefontsize\normalsize{normalsize}
\thefontsize\large{large}
\thefontsize\Large{Large}
\thefontsize\LARGE{LARGE}
\thefontsize\huge{huge}
\thefontsize\Huge{Huge}
\end{document}

For math, I recommend \usepackage{newtxmath} rather than mathptmx.

Related Solutions

[Tex/LaTex] font size selection how multiple of \normalsize

Your request isn't directly possible. The command \normalsize isn't a dimension, but a command that performs several actions.

Of course the command \normalsize depends on the font size. But it also depends on the class. The standard classes define the command related to the selected font size in the files size1X.clo. The X stands for

0 => 10pt
1 => 11pt
2 => 12pt

In the file size10.clo \normalsize is defined as

\renewcommand\normalsize{%
   \@setfontsize\normalsize\@xpt\@xiipt
   \abovedisplayskip 10\p@ \@plus2\p@ \@minus5\p@
   \abovedisplayshortskip \z@ \@plus3\p@
   \belowdisplayshortskip 6\p@ \@plus3\p@ \@minus3\p@
   \belowdisplayskip \abovedisplayskip
   \let\@listi\@listI}

where \@setfontsize\normalsize\@xpt\@xiipt means:

 \def\@xpt{10}
 \def\@xipt{10.95}
 \def\@xiipt{12}

\def\@setfontsize#1#2#3{\@nomath#1%
    \ifx\protect\@typeset@protect
      \let\@currsize#1%
    \fi
    \fontsize{#2}{#3}\selectfont}

To detect the current font size see How to display the font size in use in the final output

There you can find that the command \f@size represent the current font size. To save the standard font size use:

\edef\savefontsize{\f@size}

I can imagine the following example:

\documentclass{article}

\makeatletter
\begingroup
\normalsize
\xdef\doublesize{\noexpand\fontsize{\noexpand\numexpr2*\f@size\noexpand\relax pt}{\noexpand\dimexpr\f@baselineskip+\f@baselineskip\noexpand\relax}\noexpand\selectfont}
\endgroup


\begin{document}
Text Text

\doublesize Text Text
\end{document}

[Tex/LaTex] How to get the font sizes I need when they are in between the defaults? SAE Class progress

My solution to this problem was to first change the base class of my SAE class file from article to extarticle:

% The extarticle class allows for 9 pt font as the normalsize font.
\LoadClass[twocolumn,9pt]{extarticle}

This took care of most of the font sizes I needed, and allowed me to use a 9 pt. font as the \normalsize font in the document. For the fonts that were not available via the normal font size commands, I defined two additional font sizes in the following way:

% Define two additional exact font sizes to meet SAE guidelines. These font sizes are not included as part of the extarticle class, so we define them here. A 15pt font (baseline skip = 15*1.2 = 18), and an 11 pt font (baseline skip = 11*1.2 = 13.2). The general rule of thumb is that the baseline skip is 1.2 times the font point size. We will need to use \SAEtitlesize in the title definition, and SAEheadtwosize in the \subsection{} definition (heading level 2).
\newcommand\SAEtitlesize{\@setfontsize\SAEtitlesize{15pt}{18}}
\newcommand\SAEheadtwosize{\@setfontsize\SAEtwohead{11pt}{13.2}}

% A note about font sizes in this class: The class is based off the extarticle class, which supports 8-20pt font sizes as the default. Here we select 9pt fonts as the default \normalsize font. Thus in the SAE document class you will get the following font point sizes for each latex fontsize command:

% \tiny:         5 pt
% \scriptsize:   6 pt. 
% \footnotesize: 7 pt. SAE asks that text inside tables is 7 pt. Use \footnotesize before tables for this.
% \small:        8 pt. SAE asks for caption fonts to be 8 pt. Use \small for captions.
% \normalsize   9 pt. This should be the standard fontsize for the text body, as well as for 4th level headings (in bold/italic). This should also be the size of the paper number at the top of the page (in bold), and the size of the nomenclature/definitions/abbreviations at the end of the paper.
% \large        10 pt. This should be the size of 3rd level headings (in bold, \subsubsection{}), and the affiliations
% \Large        10.95 pt. 
% \SAEheadtwosize 11 pt. This custom font size should be the size of Heading level 2 (subsection{})
% \LARGE        12 pt. This should be the size of the author list (in bold), and all 1st level headings (in bold), including abstract, introduction, body headings, summary, references, contact info, acknowledgements, definitions/abbreviations, and the appendix heading.
% \huge         14.4 pt. 
% \SAEtitlesize 15 pt. This custom font size should be the size of the title.
% \Huge         17.28 pt.

Best Answer

Related Solutions

[Tex/LaTex] font size selection how multiple of \normalsize

[Tex/LaTex] How to get the font sizes I need when they are in between the defaults? SAE Class progress

Related Question