Centering a figure vertically on a page

Centering a figure vertically on a page

[Marcin Borkowski]

Hello,

the subject line basically covers my problem: I have a large (tikz)
figure, and I want to have it by itself on a page, centered both
horizontally and vertically.  How can I achieve this?  I already know
that \setuppagenumber[state=stop] is a good idea, and \midaligned{...}
gives me horizontal centering; what about vertical?  The problem is
that the figure is larger than the text area (and this doesn't bother
me, it's a game board and it may extend almost to the paper border),
so \vfill doesn't work (and \vss doesn't, either).

TIA

-- 
Marcin Borkowski
http://mbork.pl
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Re: Centering a figure vertically on a page

[Wolfgang Schuster]

Am 03.07.2012 um 13:21 schrieb Marcin Borkowski:

> Hello,
> 
> the subject line basically covers my problem: I have a large (tikz)
> figure, and I want to have it by itself on a page, centered both
> horizontally and vertically.  How can I achieve this?  I already know
> that \setuppagenumber[state=stop] is a good idea, and \midaligned{...}
> gives me horizontal centering; what about vertical?  The problem is
> that the figure is larger than the text area (and this doesn't bother
> me, it's a game board and it may extend almost to the paper border),
> so \vfill doesn't work (and \vss doesn't, either).

\starttext
%\noheaderandfooterlines
\centerbox{\externalfigure[cow]}
\stoptext

Wolfgang
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Re: Centering a figure vertically on a page

[Marcin Borkowski]

Dnia 2012-07-03, o godz. 13:30:22
Wolfgang Schuster <schuster.wolfgang@gmail.com> napisał(a):

> 
> Am 03.07.2012 um 13:21 schrieb Marcin Borkowski:
> 
> > Hello,
> > 
> > the subject line basically covers my problem: I have a large (tikz)
> > figure, and I want to have it by itself on a page, centered both
> > horizontally and vertically.  How can I achieve this?  I already
> > know that \setuppagenumber[state=stop] is a good idea, and
> > \midaligned{...} gives me horizontal centering; what about
> > vertical?  The problem is that the figure is larger than the text
> > area (and this doesn't bother me, it's a game board and it may
> > extend almost to the paper border), so \vfill doesn't work (and
> > \vss doesn't, either).
> 
> \starttext
> %\noheaderandfooterlines
> \centerbox{\externalfigure[cow]}
> \stoptext
> 
> Wolfgang

Thanks a lot, it works!

-- 
Marcin Borkowski
http://mbork.pl
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Re: Centering a figure vertically on a page

[Alan BRASLAU]

On Tue, 3 Jul 2012 13:30:22 +0200
Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:

> \centerbox{\externalfigure[cow]}

Wow! \centerbox{}

Alan
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Re: Centering a figure vertically on a page

[Hans Hagen]

On 3-7-2012 15:10, Alan BRASLAU wrote:
> On Tue, 3 Jul 2012 13:30:22 +0200
> Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:
>
>> \centerbox{\externalfigure[cow]}
>
> Wow! \centerbox{}

It's a rather (old) low level boxing macro ...

\start
     \showboxes
     \centerbox width 10cm height 3cm {Alan is surprised}
\stop

.. simulating the regular tex syntax for box dimensions

Hans


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Re: Centering a figure vertically on a page

[Alan BRASLAU]

On Tue, 3 Jul 2012 15:48:43 +0200
Hans Hagen <pragma@wxs.nl> wrote:

> It's a rather (old) low level boxing macro ...
> 
> \start
>      \showboxes
>      \centerbox width 10cm height 3cm {Alan is surprised}
> \stop

My TeX culture remains, alas, always limited (even if I have the
TeXbook on my office bookshelf, indeed \centerbox does not appear in
plain TeX). Nothing in the ConTeXt manual, either. Of course, a
leisurely browsing of the source code would reveal many such treasures!

On the garden:

Context 2005.05.25
...
\centerbox now accepts \par in it;s argument
...


Alan
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Re: Centering a figure vertically on a page

[Aditya Mahajan]

On Tue, 3 Jul 2012, Alan BRASLAU wrote:

> plain TeX). Nothing in the ConTeXt manual, either. Of course, a
> leisurely browsing of the source code would reveal many such treasures!

supp-box.mkiv is a good place to start a leisurely browsing of the source 
code. It contains many useful box manipuation macros.

Aditya
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Re: Centering a figure vertically on a page

[luigi scarso]

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On Tue, Jul 3, 2012 at 5:27 PM, Alan BRASLAU <alan.braslau@cea.fr> wrote:
> On Tue, 3 Jul 2012 15:48:43 +0200
> Hans Hagen <pragma@wxs.nl> wrote:
>
>> It's a rather (old) low level boxing macro ...
>>
>> \start
>>      \showboxes
>>      \centerbox width 10cm height 3cm {Alan is surprised}
>> \stop
>
> My TeX culture remains, alas, always limited (even if I have the
> TeXbook on my office bookshelf, indeed \centerbox does not appear in
> plain TeX). Nothing in the ConTeXt manual, either. Of course, a
> leisurely browsing of the source code would reveal many such treasures!
There is also \vcenter

\starttext
xxxxxxxxxxg\ruledvbox{\hsize=5cm\vcenter to 3cm{Alan is
surprised}}gxxxxxxxxx \type{\vcenter}\par
xxxxxxxxxxg\ruledvbox{\centerbox width5cm height3cm{Alan is
surprised}}gxxxxxxxxx \type{\centerbox}\par
xxxxxxxxxxg\ruledvbox{\vcenter{\centerbox width5cm height3cm{Alan is
surprised}}}gxxxxxxxxx\type{\centerbox+\vcenter}\par
\stoptext

(\vcenter is a TeX primitive)


-- 
luigi

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Re: Centering a figure vertically on a page

[Wolfgang Schuster]

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Am 03.07.2012 um 18:04 schrieb luigi scarso:

> 
> 
> On Tue, Jul 3, 2012 at 5:27 PM, Alan BRASLAU <alan.braslau@cea.fr> wrote:
> > On Tue, 3 Jul 2012 15:48:43 +0200
> > Hans Hagen <pragma@wxs.nl> wrote:
> >
> >> It's a rather (old) low level boxing macro ...
> >>
> >> \start
> >>      \showboxes
> >>      \centerbox width 10cm height 3cm {Alan is surprised}
> >> \stop
> >
> > My TeX culture remains, alas, always limited (even if I have the
> > TeXbook on my office bookshelf, indeed \centerbox does not appear in
> > plain TeX). Nothing in the ConTeXt manual, either. Of course, a
> > leisurely browsing of the source code would reveal many such treasures!
> There is also \vcenter
> 
> \starttext
> xxxxxxxxxxg\ruledvbox{\hsize=5cm\vcenter to 3cm{Alan is surprised}}gxxxxxxxxx \type{\vcenter}\par
> xxxxxxxxxxg\ruledvbox{\centerbox width5cm height3cm{Alan is surprised}}gxxxxxxxxx \type{\centerbox}\par
> xxxxxxxxxxg\ruledvbox{\vcenter{\centerbox width5cm height3cm{Alan is surprised}}}gxxxxxxxxx\type{\centerbox+\vcenter}\par
> \stoptext
> 
> (\vcenter is a TeX primitive)

ConTeXt redefines \vcenter because the primitive can only be used in math mode.

Wolfgang


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Re: Centering a figure vertically on a page

[luigi scarso]

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On Tue, Jul 3, 2012 at 6:08 PM, Wolfgang Schuster <
schuster.wolfgang@gmail.com> wrote:

>
> Am 03.07.2012 um 18:04 schrieb luigi scarso:
>
>
>
> On Tue, Jul 3, 2012 at 5:27 PM, Alan BRASLAU <alan.braslau@cea.fr> wrote:
> > On Tue, 3 Jul 2012 15:48:43 +0200
> > Hans Hagen <pragma@wxs.nl> wrote:
> >
> >> It's a rather (old) low level boxing macro ...
> >>
> >> \start
> >>      \showboxes
> >>      \centerbox width 10cm height 3cm {Alan is surprised}
> >> \stop
> >
> > My TeX culture remains, alas, always limited (even if I have the
> > TeXbook on my office bookshelf, indeed \centerbox does not appear in
> > plain TeX). Nothing in the ConTeXt manual, either. Of course, a
> > leisurely browsing of the source code would reveal many such treasures!
> There is also \vcenter
>
> \starttext
> xxxxxxxxxxg\ruledvbox{\hsize=5cm\vcenter to 3cm{Alan is
> surprised}}gxxxxxxxxx \type{\vcenter}\par
> xxxxxxxxxxg\ruledvbox{\centerbox width5cm height3cm{Alan is
> surprised}}gxxxxxxxxx \type{\centerbox}\par
> xxxxxxxxxxg\ruledvbox{\vcenter{\centerbox width5cm height3cm{Alan is
> surprised}}}gxxxxxxxxx\type{\centerbox+\vcenter}\par
> \stoptext
>
> (\vcenter is a TeX primitive)
>
>
> ConTeXt redefines \vcenter because the primitive can only be used in math
> mode.
>
yes I know ... and  original TeX primitive is still available as
\normalvcenter
(kind of easter egg for Alan..)

-- 
luigi

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Re: Centering a figure vertically on a page

[Wolfgang Schuster]

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Am 03.07.2012 um 18:19 schrieb luigi scarso:

>> (\vcenter is a TeX primitive)
> 
> ConTeXt redefines \vcenter because the primitive can only be used in math mode.
> yes I know ... and  original TeX primitive is still available as \normalvcenter
> (kind of easter egg for Alan..)

All primitives are available as \normal… and sometimes it’s the only way to use
them because the names are used for other commands, e.g. \unexpanded.

Wolfgang


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