Next message: Richard Goodwin: "RE: lv-ab: nav programs"
Yeah, that's the really good thing about the vector
charts -- they can contain a wealth of information
about any object. And the charts are program
readable, meaning the software can be aware of such
things as depths, and let you know if you are heading
for trouble. Raster charts are just big pictures, and
the software can't deduce much from that unless it is
smart enough to do optical character recognition.
Dick
--- Tim Holock <> wrote:
> A couple of other thoughts: the vector vs raster
> argument may go on forever,
> but I happen to love the vector charts. As an
> example, headed down Delaware
> Bay I saw a huge concrete mound just off the
> channel. I couldn't find any
> mention of it on the raster chart, but in Coastal
> Explorer I highlighted the
> item, and it told me it was 'rip-rap', 'tower -
> ruined', 'abandoned
> lighthouse', 'disused'. To me, pretty good
> information, although not
> critical for navigation.
>
> Also, Coastal Explorer uses the raster info in neat
> (strange) ways. It looks
> ahead and predicts if you are headed for too shallow
> areas, and gives you a
> verbal warning that you're going to go aground.
> Which would work fine if the
> speakers on the computer were about 10 times as
> loud. Not useful to me, but
> an idea of where we could be going.
>
> There was something else but after 2 margaritas its
> gone. Maybe later.
>
> Tim
>
>
>
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