Re: 2DOWN imposition gives blank pages

[Willi Egger <w.egger@boede.nl>]

Hi,

The 2SIDE arrangment is not intended for a doublesided layout. If the 
layout is single sided you can easily add an empty page with 
\strut\page. This impositionscheme is only for arranging 2 pages on a 
suitable paper, the pages remain in their normal sequence. that is, 
there is no booklet!
In order to have an empty page you can stop pagenumbering first and 
start numbering on the second page (see below).

The 2UP arrangement is suitable for a doublesided layout, pages are 
arranged in such a way, that you can fold a booklet. Whether or not the 
left part of the paper-sheet remains blank depends on the number of 
pages to be arranged. This method uses a lot of paper because a chapter 
will allways start on an odd page, i.e. on the right-half of the paper.
Otherwise you can use a singlesided layout with 2UP and in this case 
chapters will also start on "odd" pages. This is the most compact way of 
arranging 2 pages on one sheet of paper, ending up still with a booklet.

Tests were performed with the following code:

\setuppapersize[A5,portrait][A4,landscape]%
% \setuparranging [2*8,doublesided]
\setuparranging[2SIDE]%not intended for a duoblesided layout.
%\setuparranging[2UP]% can be used with doublesided layout, chapters 
start allways on an odd page.
                                    % can be used with a singlesided 
layout, chapters will start also on even pages, keep in mind
                                    % that the imposition takes place 
after typesetting. In the case of a singlesides layout, all pages
                                    % are "odd".
\setuplayout [location=middle]
\setuppagenumbering[location={footer,marginedge},state=start]%,alternative=doublesided

\starttext
\setuppagenumbering[state=stop]
    \strut\page
\setuppagenumbering[state=start]

\dostepwiserecurse{1}{20}{1}{%
    \startalignment[middle]
    \chapter{Chapter title}
        \vfil
        This is {\bfd \recurselevel}
        \input zapf
        \stopalignment
        \vfil
        \page}
\stoptext

Willi

Sanjoy Mahajan wrote:
> I've mostly understood arranging but I cannot figure out how to make
> 2SIDE place a blank page (page 0, to not affect the page numbering) on
> the left half of the first arranged sheet and carry on as normal.  To
> illustrate, where the enclosed numbers are the unarranged numbers:
>
> p.1: | |1|
> p.2: |2|3|
> p.3: |4|5|
>
> That way each arranged sheet (p.1,2, or 3) will be a spread from the
> final book, plus one saves paper.
>
> Gerben Wierda (12 March 2005) asked this question on the list, but I
> did not see an answer so perhaps it is difficult.  I looked at the
> code in page-imp.tex and had hopes for \ejectdummypage but my
> experments didn't work.
>
> Also my hopes for a cheap hack also were dashed.  I tried inserting a
> \null\page[blank] before the \chapter{First chapter}.  But with
> doublesided pagenumbering, the chapter starts only on an odd page, so
> the single blank page turns into two blank pages.
>
> -Sanjoy
>
> `Never underestimate the evil of which men of power are capable.'
>          --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.
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