From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rasmus <rasmus@gmx.us>
Subject: Re: Multiple Author affiliations in Org mode with more than 2
 institute affiliations
Date: Thu, 18 Feb 2016 16:31:15 +0100
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Prakash Nayak <nayakprakash@gmail.com> writes:

> I have this setup in my Orgmode doc and it doesn't export the author
> affiliations to latex or pdf. Instead I get a heuristic 'immediate' in
> place of authors I have added Latex to Org -babel-Load languages in .emacs
> What must be done to allow babel to evaluate Latex code blocks? Is there a
> hyperef setup that I must change? Is there an easier way to do it without a
> latex code block?

I'm not very satisfied with authblk.  Couldn't you use the standard
input method?  E.g. you could get

      \author{Name1\\Affil1 \and Name2 \and Name3\\Affil2}

As:

#+Macro: aa $1@@latex:\\@@$2
#+Macro: and @@latex:\and@@
#+Author: {{{aa(name1, affil1)}}} {{{and()}}} {{{aa(name2, affil2)}}} {{{and()}}} {{{aa(name3, affil3)}}}

You could probably eliminate the need for {{{and()}}} by having aa look
ahead and check if another call to aa() will come, and if so insert \and.

> #+Title: Multiple Author affiliations in OrgMode Latex export #+date:
> 11 Feb 2016#+latex_class: article#+latex_class_options:
>
> [a4paper]#+OPTIONS: toc:nil#+OPTIONS: author:nil#+latex_header:
> \usepackage{float}#+latex_header: \usepackage{graphicx}#+latex_header:
> \usepackage{authblk}
>
>     #+BEGIN_LATEX
>     \author[1]{Author One}
>     \author[1]{Author TwoTwo}
>     \author[1]{Author TwoTwoo}
>     \author[1,2]{Author TwoTwooo}
>     \author[1]{Author Three}
>     \author[1]{Author TwoTw}
>     \author[1]{Author Four}
>     \author[1]{Author Fourrr}
>     \author[2]{Author Fourrrr}
>     \author[2]{Author Twenty}
>     \affil[1]{Guided Therapeutics Centre}
>     \affil[2]{Division of theatre}
>     #+END_LATEX

If you insist on this you could use a filter.

Hope it helps,
Rasmus

-- 
When in doubt, do it!