[Mac OS X TeX] small dots disappear in Quartz

[Troy Goodson]

<x-flowed>I made a PDF of a plot from Matlab.  I used syntax like plot(x,y,'.') 
which means that each point is marked with a little circle and are 
not connected by lines.  this plot has thousands of points on it, so 
when you look at it there appears be a big blue blob (Matlab's 
default plot color is blue).

Open such a PDF in Preview.app and it looks OK because Preview.app 
shows scale=1 by default.  Start reducing the scale and you'll see 
the problem: after a certain reduction (about 1/4), OS X decides not 
to show the dots!  The plot looks empty.

Now, each dot, as an individual becomes invisible at a small scale, 
but a large number of dots clustered together are quite visible at 
almost all scales.

I think this is a bug.  A big blue blob should scale.  Reduce the 
scale and you should get a small blue blob; it should not disappear.

<http://bugreport.apple.com> isn't working right now, but I plan on 
submitting this one.  At the same time, I thought the list might be 
interested.

Troy.

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