one man, one vote (also good web site)

[KA4HJH]

>I'm a PDF man myself - I've had too many bad experiences downsampling
>GIFs, trying to get them to fit on a page, etc. Everything I have
>scanned in, however, has been GIF, which does look nice if you can
>process it properly. JPEG and schematics don't mix - my current printer
>can actually print JPEGs legibly, but no other printer I have used has
>that capability.

JPEG is a type of information compression. It works partially by throwing
away information that won't be missed later. Schematics are line art,
mostly. Run some line art through a Fourier transform and what do you
see--a bunch of high frequency info that JPEG likes to throw away! (it
thinks you won't notice).

For line art you need a non-lossy form of compression (data compression
only). JPEG was never intended for line art, but for still photos in
particular.

MPEG is information compression, too, intended for audio and video. Can
_you_ hear the difference?

Terry Bowman, KA4HJH
"The Mac Doctor"