Thank you Benjamin for your reply.

I have a project whereby I would be using a one and only form, which is
published by the European Union. I understand from your explanation that
the only way to use SDAPS would then be to have the .tex source of that
form, because the use of any pdf to LaTeX converter would still show some
discrepancies with the original file. Is that correct ?

On Wed, May 13, 2015 at 11:54 PM, Benjamin Berg <[email protected]>
wrote:

> Hi,
>
> On Mi, 2015-05-13 at 00:28 +0200, lookman sanni wrote:
> > I am pretty new to SDAPS and have a question regarding its usage. I
> > went through the tutorial of questionnaire creation, printing,
> > scanning and recognition. What remains unclear to me is how he
> > recognition process works. Does it rely on the defined LaTeX layout.
> > stored in the same working folder or it completely does it from
> > scratch ?
>
> It relies on the layout that the document had when the project was
> created. The LaTeX class writes out all the information (look at the
> questionnaire.sdaps file) which is parsed by SDAPS and stored
> internally. So it is impossible to change the layout/questionnaire after
> the setup step.
>
> > Let's suppose I have an existing survey that I would like to read
> > optically. Should I first "clone" or rebuild the survey in LaTex for
> > SDAPS to be able to read through it?
>
> SDAPS needs to know the exact location of all the checkboxes. It also
> requires the barcodes and corner marks to be exactly as it expects them
> to be.
> You really need to do everything with the utilities provided by SDAPS,
> using a print/scan of another (similar) document together with SDAPS is
> *not* possible.
>
> Hope this answers your question,
> Benjamin
>
>


-- 
Best Regards

Lookman SANNI

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