How to control white-space dimensions around author block with authblk and geometry?

Question

I am trying to control the white-space dimensions around my author block using authblk and geometry. How can I control the distance between the top margin and the title, the title and the author list, the authors and the affiliations and between the affiliations and the text body? I indicated the dimensions that I'm interested in with annotations (in red) on the drawing below.

The MWE for my document is here:

% arara: pdflatex
\documentclass[10pt,twocolumn]{article}
\usepackage[margin=0.5in,showframe]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{authblk}
\usepackage{setspace}
\renewcommand{\familydefault}{\sfdefault}
\usepackage{helvet}
\usepackage{lipsum}

\makeatletter
\def\@maketitle{
\newpage
\null
\vskip 2em
\begin{center}
    \let \footnote \thanks
    {\LARGE \@title \par}
    \vskip 1.5em
    {\large
    \lineskip .5em
    \begin{tabular}[t]{c}
        \baselineskip=12pt
        \@author
    \end{tabular}\par}
    \vskip 1em
    {\large \@date}
\end{center}
\par
\vskip 1.5em}
\makeatother

\begin{document}
    \large
    \title{Title}
    \scriptsize
    \setstretch{0.1}
    \author[1]{Author 1}
    \author[2]{Author 2}
    \author[3]{Author 3}
    \author[4]{Author 4}
    \author[5]{Author 5}
    \author[1]{Author 6}
    \author[1]{Author 7}
    \author[1]{Author 8}
    \author[1]{Author 9}
    \author[1]{Author 10}
    \author[1]{Author 11}
    \author[1]{Author 12}
    \author[1]{Author 13}
    \author[1]{Author 14}
    \author[1]{Author 15}
    \author[1]{Author 16}
    \author[1]{Author 17}
    \author[1]{Author 18}
    \author[1]{Author 19}
    \author[1]{Author 20}
    \author[1]{Author 21}
    \author[1]{Author 22}
    \author[1]{Author 23}
    \author[1]{Author 24}
    \author[1]{Author 25}
    \author[1]{Author 26}
    \author[1]{Author 27}
    \author[1]{Author 28}
    \author[1]{Author 29}
    \affil[1]{Affiliation 1}
    \affil[2]{Affiliation 2}
    \affil[3]{Affiliation 3}
    \affil[4]{Affiliation 4}
    \affil[5]{Affiliation 5}
    \date{}
    {\let\clearpage\relax
    \maketitle }
    \lipsum[1-10]
\end{document}

Thanks!

score 4 · Accepted Answer · answered Aug 30 '19 at 18:19

Well, at last you can control the red annotations with geometry, authblk and the given redefined code for \maketitle:

Please see in the following MWE marked with <===== space X) the places where you can control the named spaces. Please see that I added the date and therefore is an new space e') existing between affiliation and date. Please see that the resulting space can be a sum of two commands, for example an \par (new line) and an \vspace{} ...

a), b), g), h) are defined by geometry, change for example margin=1in. Please read the documentation of package geometry with texdoc geometry ...
c) space before title
d) space after title, before authors
e) space after authors, before affiliation, controlled/changed with \setlength{\affilsep}{5em} ...
e') space between affiliation and date (in the case you have no date in your code e') is part of the resulting space f) ...
f) space after date

Here the MWE with commented places, where the spaces comes from:

\documentclass[10pt,twocolumn]{article}

\usepackage[%
  margin=1in, % 0.5in <============================ space a), b), g), h)
  showframe
]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{authblk}
\usepackage{setspace}
\renewcommand{\familydefault}{\sfdefault}
\usepackage{helvet}
\usepackage{lipsum}

\setlength{\affilsep}{5em} % <================================= space e)

\makeatletter
\def\@maketitle{%
\newpage%
\null%
%\vskip 2em % <================================================ space c)
\begin{center}%
    \let\footnote\thanks %
    {\LARGE \@title %
      \par % <================================================= space d)
    }
%   \vskip 1.5em % <=========================================== space d)
    {\large
     \lineskip .5em
     \begin{tabular}[t]{c}
        \baselineskip=12pt
        \@author
     \end{tabular}
     \par% <=================================================== space e')
    }
%   \vskip 1em % <============================================= space e')
    {\large \@date}
\end{center}
\par % <======================================================= space f)
\vskip 1.5em} % <============================================== space f)
\makeatother

\begin{document}
    \large
    \title{Title}
    \scriptsize
    \setstretch{0.1}
    \author[1]{Author 1}
    \author[2]{Author 2}
    \author[3]{Author 3}
    \author[4]{Author 4}
    \author[5]{Author 5}
    \author[1]{Author 6}
    \author[1]{Author 7}
    \author[1]{Author 8}
    \author[1]{Author 9}
    \author[1]{Author 10}
    \author[1]{Author 11}
    \author[1]{Author 12}
    \author[1]{Author 13}
    \author[1]{Author 14}
    \author[1]{Author 15}
    \author[1]{Author 16}
    \author[1]{Author 17}
    \author[1]{Author 18}
    \author[1]{Author 19}
    \author[1]{Author 20}
    \author[1]{Author 21}
    \author[1]{Author 22}
    \author[1]{Author 23}
    \author[1]{Author 24}
    \author[1]{Author 25}
    \author[1]{Author 26}
    \author[1]{Author 27}
    \author[1]{Author 28}
    \author[1]{Author 29}
    \affil[1]{Affiliation 1}
    \affil[2]{Affiliation 2}
    \affil[3]{Affiliation 3}
    \affil[4]{Affiliation 4}
    \affil[5]{Affiliation 5}
    \date{\today} % <===================================================
    {\let\clearpage\relax
    \maketitle }
    \lipsum[1-10]
\end{document}

and its resulting pdf:

Thanks for a great answer! What is the difference between dimensions a and b (or between g and h) . Basically, what is showframe showing me. I've posted this as a separate question at the following link: https://tex.stackexchange.com/questions/508356/what-is-the-showframe-option-to-geometry-showing-me — Canaryyellow, Sep 15 '19 at 07:35

How to control white-space dimensions around author block with authblk and geometry?

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