KOMA-script scrreprt: Chapter Heading Size Customisation

Question

This is a continued question from my previous thread I am setting up LaTeX to write my thesis using scrreprt.

I have implemented with success all the advised and suggested solutions and have tried to tinker to achieve the final desired aesthetic change which was increasing the chapter name size.

Currently I am more than happy with the size of the chapter and chapter number, but I wasn't able to figure out the right way to control the chapter name. I used \addtokomafont{chapter}{\Huge} but could see no big change. I couldn't work out how to use a \scalebox. I also looked into using the \othersectionlevelsformat{sectioning name }{}{counter output } the KOMA-Script manual states on pg 97 that \renewcommand can be used to define formatting commands and that the original definitions in the KOMA-Script classes are:

\newcommand*{\partformat}{\partname~\thepart\autodot}
\newcommand*{\chapterformat}{%
\chapappifchapterprefix{\ }\thechapter\autodot\enskip}
\newcommand*{\othersectionlevelsformat}[3]{%
#3\autodot\enskip}

However I wasn't able to make use of this command effectively, could you please help, thank you in advance.

Please find below my current MWE, thank you in advance for any help.

\documentclass[
bibliography=totoc,
headings=big,
captions=tableheading,
chapterprefix=true% like in standard class "report"
]{scrreprt}
\usepackage[left=2cm,right=2cm,top=2.5cm,bottom=3cm]{geometry}
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage{minitoc}
\usepackage{setspace}

\setcounter{secnumdepth}{3} % number subsubsections
\setcounter{tocdepth}{3} % list subsubsections

\begin{document}
\dominitoc
\tableofcontents

\addtokomafont{chapterprefix}{\raggedleft}

\addtokomafont{section}{\huge}
\addtokomafont{subsection}{\Large}
\addtokomafont{subsubsection}{\large}

\renewcommand*{\chapterformat}{%
\mbox{\scalebox{1.5}{\chapappifchapterprefix{\nobreakspace}}%
\scalebox{4}{\color{gray}\thechapter\autodot}\enskip}}

\setcounter{chapter}{6}\setcounter{page}{199}
\newpage\setcounter{page}{212}

\chapter{Conclusions}
\dictum[Sun Tzu]{If you know the enemy and you know yourself %\\
you need not fear the results of a hundred battles.}

\minitoc

\section{Summary of Achievements}
Text goes here

\subsection{Papers Submitted}
Text

\subsubsection{I want to go into the TOC}
Testing stuff out

\bibliographystyle{plain}
\bibliography{bibliography}

\end{document}

Answer 1

Load the lmodern package so you can use very huge sizes, then use something like

\addtokomafont{chapter}{\fontsize{30}{38}\selectfont}

and this is the result:

Complete MWE:

\documentclass[
bibliography=totoc,
headings=big,
captions=tableheading,
chapterprefix=true% like in standard class "report"
]{scrreprt}
\usepackage[left=2cm,right=2cm,top=2.5cm,bottom=3cm]{geometry}
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage{minitoc}
\usepackage{setspace}
\usepackage{lmodern}

\setcounter{secnumdepth}{3} % number subsubsections
\setcounter{tocdepth}{3} % list subsubsections

\begin{document}
\dominitoc
\tableofcontents

\addtokomafont{chapterprefix}{\raggedleft}
\addtokomafont{chapter}{\fontsize{30}{38}\selectfont}
\addtokomafont{section}{\huge}
\addtokomafont{subsection}{\Large}
\addtokomafont{subsubsection}{\large}

\renewcommand*{\chapterformat}{%
\mbox{\scalebox{1.5}{\chapappifchapterprefix{\nobreakspace}}%
\scalebox{4}{\color{gray}\thechapter\autodot}\enskip}}

\setcounter{chapter}{6}\setcounter{page}{199}
\newpage\setcounter{page}{212}

\chapter{Conclusions}
\dictum[Sun Tzu]{If you know the enemy and you know yourself %\\
you need not fear the results of a hundred battles.}

\minitoc

\section{Summary of Achievements}
Text goes here

\subsection{Papers Submitted}
Text

\subsubsection{I want to go into the TOC}
Testing stuff out

\bibliographystyle{plain}
\bibliography{bibliography}

\end{document}