Garmin unveiling?

On Thu, 12 Jul 2007 21:56:59 -0000, "Robert M. Gary"
wrote:

Airways. Until they put airways in the GPS systems they will still be
just help tools. This is the same with the G1000. I still have to
carry all my charts and reference them often in flight.

Excellent point, I had forgotten about airways. I have been flying
with a Garmin 295 for years, but I also have my own moving map
software running on a tablet PC which displays airways and
intersections.

In Garmin's defense, the airways take up a lot of memory, are slow to
draw/paint on the screen, and consume/clutter the display... and that
is on a 900MHz Pentium III tablet PC with a 10.4" screen. Airways
would be a tough trick on a smaller 3-4" portable GPS screen.

Nathan Young wrote:
In Garmin's defense, the airways take up a lot of memory

Feh. The FAA distributes the airway database in an extremely verbose text
format which is about 10 meg in raw format, but compresses down (with gzip)
to a little under a meg. The only data in the file which doesn't already
need to be stored anyway (i.e. fix coordinates) is a list of which fixes
make up each airway. There's 42k records in the file. If you used a
32-bit pointer for each fix, plus some per-airway information (I count 2240
airways), the whole thing fits into under 200k. This is nothing.

"Roy Smith" wrote:

In Garmin's defense, the airways take up a lot of memory

Feh. The FAA distributes the airway database in an extremely verbose text
format which is about 10 meg in raw format, but compresses down (with gzip)
to a little under a meg. The only data in the file which doesn't already
need to be stored anyway (i.e. fix coordinates) is a list of which fixes
make up each airway. There's 42k records in the file. If you used a
32-bit pointer for each fix, plus some per-airway information (I count 2240
airways), the whole thing fits into under 200k. This is nothing.

G-D usenet. There's always some smartass who actually knows what he's
talking about to come along and spoil the fun!

--
Dan

"Gut feeling"

Intestinologists concur that the human gut does not contain any
rational thoughts.

What the human gut *is* full of is moderately well
known.