[R] Artifacts in pdf() of image() (w/o comments)
murdoch at stats.uwo.ca
Mon Aug 13 17:56:47 CEST 2007
On 8/13/2007 11:43 AM, Michael Kubovy wrote:
> But is it a bug? Can a program anti-alias text and line drawings and
> not bitmaps?
Anti-aliasing is the removal of artifacts caused by displaying an image
on a low-resolution bitmapped display. Introducing artifacts is a bug.
If it wasn't a bug, why did it bother you so much? And why do you think
it's reasonable to complain about it on R-help, but not to complain
about it to Apple, who are clearly responsible for it?
> On Aug 13, 2007, at 9:30 AM, Duncan Murdoch wrote:
>> On 8/13/2007 11:07 AM, Michael Kubovy wrote:
>>> Dear Friends,
>>> Thanks for your input.
>>> FYI: Preview doesn't show PDF aliasing in the image I produced if
>>> I uncheck the "Anti-alias text and line art" box under the PDF
>>> tab in Preferences. So I'm not yet ready to drop Preview from my
>> An alternative to dropping Preview is to report the bug in it to
>> Apple. Apple has an online bug reporting web page somewhere; I
>> haven't found them as helpful as R-help, but your mileage may vary.
>> Duncan Murdoch
> Professor Michael Kubovy
> University of Virginia
> Department of Psychology
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