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List:       gimp-print-devel
Subject:    Re: [Gimp-print-devel] Page sizes for floating point units
From:       Steve Letter <sletter1 () yahoo ! com>
Date:       2017-03-20 1:49:04
Message-ID: A95B3A83-1D25-4C15-A986-D8F0AB8070C2 () yahoo ! com
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I would prefer the former.  We need more accuracy on small labels and can tolerate more error on large labels.  For most, 3 significant figures would be enough but for a few, 4 would be better..

Steve Letter

> On Mar 19, 2017, at 9:18 PM, Robert Krawitz <rlk@alum.mit.edu> wrote:
> 
> So, the next question: do we want to update the paper sizes in the
> floating point units branch, and if so, to what level of precision?
> 
> The English paper sizes should, at least for the most part, be
> exact since they're based on inches or low order fractions of inches.
> The metric ones aren't.  Per el Wik, the actual paper sizes have
> tolerances between +/- 1-3 mm depending upon size, which is a lot more
> than 1 point.
> 
> The smallest label size I see is d-056x344, which is normalized to
> 40x248 points.  That's the only one where the error might be even as
> much as 1% (it actually isn't quite -- the exact size would be 40.32
> points).  Most other listed media sizes are at least several hundred
> points in the smallest dimension, so we're looking at errors of no
> more than about 0.1%.  Is this worth correcting or not?
> 
> And if so, do we correct to a certain number of significant figures
> (say, sizes above 1000 points we don't correct at all, if we decide 4
> significant figures is the limit)) or a certain number of decimals
> (say, 2 significant figures to the right of the decimal point)?
> -- 
> Robert Krawitz                                     <rlk@alum.mit.edu>
> 
> ***  MIT Engineers   A Proud Tradition   http://mitathletics.com  ***
> Member of the League for Programming Freedom  --  http://ProgFree.org
> Project lead for Gutenprint   --    http://gimp-print.sourceforge.net
> 
> "Linux doesn't dictate how I work, I dictate how Linux works."
> --Eric Crampton
> 
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