Re: BIG PDF files with LOTS of images

[Hans Hagen <pragma@wxs.nl>]

Matthew Baker wrote:

> This massive monstrosity I have been working on for the past few weeks is
> finally nearly ready for the printers, who are graciously accepting it in
> PDF form.  Now I have a problem: this document doesn't have many pages but
> it has a *lot* of images.  Acrobat grows in size with each page and it
> runs out of memory before I've browsed very far into the document.  I'd

This sounds like an acrobat bug. Did you try version 4? (Pleas keep
version 3on you system for more accurate viewing). 

> like Acrobat to clear all it's memory before loading the next page.  The
> file isn't that big (only a few meg) so it must be storing all the

There is an option to turn off the page cache in the preferences. 

> embedded JPEG images internally as uncompressed bitmaps.  Is this problem
> related to PDF storing images globally so that they can be reused (I'm no

Graphics are object anyway. Context does reuse them by default, and you
can turn this behavior off, but this will not solve the problem. They
still are xobjects. 

> PDF expert but I have vague recollections of it doing this)?  If so, can
> that be turned off in context so that the images are deleted from memory
> after use?  And does this have anything to do with the preset option in
> externalfigure (which dumps TeX errors when I play with it)?

Please show me the errors! The preset option has nothing to do with
this. You seldom (never) need to use this. It tells context not to
determine the dimensions (default with for instance movies, that are
always scaled by the viewer). The errors can be due to overflows when
(nearly) zero dimensions are used.  

One seldom has to mess around with preset, sometimes with preview
(movies) and also seldom with object (only when the illustration changes
while the name is the same). 

> One more question: what does one do to make PDF bookmarks?  From what I
> can tell, I just need something like
> 
> \placebookmarks[section]
> \setupinteraction[state=start]

This must come before ths \placebookmarks. 

> \setuplist
>   [section]
>   [criterium=all,
>    interaction=all]

This is unrelated to bookmarks. 

> which I try but it doesn't seem to do anything.  I get promising looking
> entries in my tui file with bm:: as the name of the list so I figure I
> must be close.

You can locally overload a chapter title by saying: 

% \chapter{het eerste hoofdstuk}
%
% \bookmark {de eerste bookmark} 

So here, \bookmark overloads the \chapter title. Keep inmind that,
although I do some conversion, it will never be 100%, due to pdfdoc
encoding and plain strings. 

% \placebookmarks
[hoofdstuk,paragraaf,subparagraaf,subsubparagraaf,mylist]
%                 [open list]

When you define a list with \definelist[mylist] you can also add marks
that are not in titles, saying \bookmark[mylist]{whatever}. BTW, no
problem in including figures etc too. 

The second argument of \placebookmark specifies which ones to open. 

Hans

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                                          Hans Hagen | PRAGMA ADE
              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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