Printing off approach plates on demand?

John R. Copeland wrote:
More specifically, Jepp plates are vector graphics, not raster images.
They are rendered into a raster image only at time of display,
so lines and edges won't appear fuzzy at high zoom levels.
That means each displayable image is constructed to the full resolution
of your display device only *after* you select a subsection of the chart,
such as the chart header, or the profile view, etc. for display.
That uses a little extra real-time image-processing computation,
but the result is an immensely better image than PDFs give us.

PDF is inherently vector graphics too (they *can* contain raster
scanned images, but the approach plates are vector). I just opened up
the HPN ILS-16 plate in Adobe Reader and zoomed in to 6400%. No
jaggies.

PDF is pretty much just PostScript with a few minor restrictions and
packaged up nicely in a standard file format. If you zoom in to about
800% on some of the standard symbols (vortac, displaced threshold) on
the charts, you can even see some classic PostScript coding errors
where they don't handle mitre clipping properly at the corners of
polygons. PostScript has built-in mechanisms to handle these (ahem)
corner cases, but whoever did coded up the postscript driver didn't do
it right.