Showing parts of PDF files or splitting PDF files

Showing parts of PDF files or splitting PDF files

[Matthias Heidbrink]

Hi,

I need to include a PDF picture in a ConTeXt document that is much too 
detailed to be scaled down onto a single page. So I need to distribute it
across two ore more pages.

- Is there a way to display only a part of a PDF file in ConTeXt, like 
  it could be done with manipulation of the bounding box of a PostScript 
  picture in LaTeX?

- Does anyone know an application that will split a PDF file into 
  user-defined parts (not just printing pages)?

- Any other ideas?


Ciao, Matthias

Re: Showing parts of PDF files or splitting PDF files

[John Culleton]

On Saturday 26 October 2002 10:09 am, Matthias Heidbrink wrote:
> Hi,
>
> I need to include a PDF picture in a ConTeXt document that is much
> too detailed to be scaled down onto a single page. So I need to
> distribute it across two ore more pages.
>
> - Is there a way to display only a part of a PDF file in ConTeXt,
> like it could be done with manipulation of the bounding box of a
> PostScript picture in LaTeX?
>
> - Does anyone know an application that will split a PDF file into
>   user-defined parts (not just printing pages)?
>
> - Any other ideas?
>
>
> Ciao, Matthias
> _______________________________________________


I would convert the pdf to ps, load it into gimp, and do what I needed
to do there. Then download the results as e.g., giff and include it in
Context as a graphic. Or download as ps, convert to pdf etc.
John Culleton
Able Indexers and Typesetters, Rowse Reviews, Culleton Editorial 
Services
http://wexfordpress.com

Re: Showing parts of PDF files or splitting PDF files

[Henning Hraban Ramm]

Am Samstag, 26. Oktober 2002 16:09 schrieb Matthias Heidbrink:
> - Is there a way to display only a part of a PDF file in ConTeXt, like
>   it could be done with manipulation of the bounding box of a PostScript
>   picture in LaTeX?

Don't know.
In PS you could use a mask path, similar constructs exist in PDF, but I don't 
know how to create or manipulate such.

> - Does anyone know an application that will split a PDF file into
>   user-defined parts (not just printing pages)?

The simplest way would be to change the crop box and trim box of the page.
You can do that with Acrobat (not Reader) and the free "Prinergy Geometry 
Editor" plugin by Creo. There are other tools (Acrobat plugins, not free) to 
trim pictures in a PDF to the visual part (Enfocus PitStop, Quite A Box of 
Tricks, maybe others).
You would need two copies with different boxes.

But I didn't try yet how ConTeXt / pdfTeX handles boxes in an embedded PDF.

Grüßlis vom Hraban!
---
http://www.fiee.net/texnique/
http://www.ramm.ch/context/
---

Re: Showing parts of PDF files or splitting PDF files

[Jens-Uwe Morawski]

On Sat, 26 Oct 2002 16:09:30 +0200
Matthias Heidbrink <mh@cs.tu-berlin.de> wrote:

> I need to include a PDF picture in a ConTeXt document that is much too 
> detailed to be scaled down onto a single page. So I need to distribute it
> across two ore more pages.
> 
> - Is there a way to display only a part of a PDF file in ConTeXt, like 
>   it could be done with manipulation of the bounding box of a PostScript 
>   picture in LaTeX?

Since LaTeX can do it it for PDFs too, it should be possible in ConTeXt
as well. The problem is that there seems to be no option in the
\externalfigure macro for this purpose. Hans knows ...
 
> - Does anyone know an application that will split a PDF file into 
>   user-defined parts (not just printing pages)?
> 
> - Any other ideas?

Maybe the following can help you. (run texexec with option --automp)

%%--- snip ---
% output=pdftex interface=en

\startMPinclusions
def SplitExternalFigure (expr _file, _size, _split, _show) =
	begingroup;
	save _xp, _yp ; numeric _xp, _yp ;
	_xp:= (xpart _size)/(xpart _split) ;
	_yp:= (ypart _size)/(ypart _split) ;
	
	externalfigure _file xyscaled _size ;
	clip currentpicture to ( (unitsquare xyscaled (_xp,_yp))
		shifted (((xpart _show)-1)*_xp,((ypart _show)-1)*_yp) ) ;
	endgroup;
enddef;
\stopMPinclusions

\startuseMPgraphic{mySplitFigure}
SplitExternalFigure(
	"\MPvar{file}", 
	(\MPvar{size}),
	(\MPvar{hparts},\MPvar{vparts}),
	(\MPvar{hshow},\MPvar{vshow}) ) ;
\stopuseMPgraphic



\starttext

% file: file name of your graphic
% size: horizontal and vertical size of your graphic
% hparts, vparts: split graphic horizontally in hparts
%       columns and vertically in vparts rows
% hshow, vshow: shows after splitting segment in column
%       hshow and row vshow (hshow=1,vshow=1 means most
%       lower-left segment)

\setupMPvariables[mySplitFigure]
	[file=myfigure.pdf,
	 size={91.9mm,53.7mm},
	 hparts=3,vparts=2,hshow=1,vshow=1]

% place the splitted figure by name
\placefigure{splitted: 3by2, shows segment: 1,1}
	{\useMPgraphic{mySplitFigure}}


\setupMPvariables[mySplitFigure]
	[hparts=2,vparts=2,hshow=2,vshow=1]
\placefigure{splitted: 2by2, shows segment: 2,1}
	{\useMPgraphic{mySplitFigure}}

\stoptext
%%--- snap ---

Have fun,
  Jens

Re: Showing parts of PDF files or splitting PDF files

[Hans Hagen]

At 10:34 PM 10/26/2002 +0200, Jens-Uwe Morawski wrote:
>On Sat, 26 Oct 2002 16:09:30 +0200
>Matthias Heidbrink <mh@cs.tu-berlin.de> wrote:
>
> > I need to include a PDF picture in a ConTeXt document that is much too
> > detailed to be scaled down onto a single page. So I need to distribute it
> > across two ore more pages.
> >
> > - Is there a way to display only a part of a PDF file in ConTeXt, like
> >   it could be done with manipulation of the bounding box of a PostScript
> >   picture in LaTeX?
>
>Since LaTeX can do it it for PDFs too, it should be possible in ConTeXt
>as well. The problem is that there seems to be no option in the
>\externalfigure macro for this purpose. Hans knows ...
>
> > - Does anyone know an application that will split a PDF file into
> >   user-defined parts (not just printing pages)?
> >
> > - Any other ideas?

there is a clip macro:

   \clip[nx=2,ny=2,x=1,y=1]{\externalfigure[koe]}
   \clip[hoffset=1cm,width=2cm,height=3cm]{\externalfigure[koe]}

you can also apply arbitrary clipping paths (see metafun manual)

\startMPclip{fun}
   clip currentpicture to fullcircle
     shifted (.25,.25) xscaled \width yscaled \height ;
\stopMPclip

\clip[nx=1,ny=1,x=1,y=1,mp=fun]{\externalfigure[koe]}


Hans


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