Steve Letter
2017-03-20 01:49:04 UTC
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
Steve Letter
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)?
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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)?
--
*** 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
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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