On Tue, Oct 24, 2017 at 7:27 PM, Alan Braslau <[email protected]> wrote:
> On Tue, 24 Oct 2017 19:06:51 +0200
> luigi scarso <[email protected]> wrote:
>
>> is this
>> \externalfigure[cow]
>> a pdf ?
>> As said previously , including pdf can break the rules of
>> format=PDF/A-3a.
>> Simply include bitmap images, it's way more robust.
>
> Isn't that non-optimal, using bitmap images rather than vector graphics?
> Must there not be a way to correctly include PDF graphics, perhaps
> modifying the included file to make it conforming?
Forgetting for the moment that a generic pdf could not have the right
structure (and fix it can be quite complicate)
you can have a "guest" pdf file that is valid pdf/a but once included
with \externalfigure can conflicts with the "host" pdf, because the
host specifies a different color spaces, for example.
On the other side, if you include it as bitmap, you are safe on the
color spaces and the structure.
Of course This sound not ok if the pdf is only text --- but even in
this case the situation is not so simple:
the fonts must be correct (it's known that we have math fonts that are
not ok ), the tounicode also..
so also in this case a high res bitmap can be the only solution.,
--
luigi
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