[Loadstone] Clock-face cardinal discrepancy in exploration mode

Rob Melchers rob at loadstone-gps.com
Fri Oct 12 10:54:31 BST 2007


Agree. Only the clockface should go.

At 10/12/2007, you wrote:
>Oh please keep that setting option. take out the clock/face if you
>please, but leave me the degrees. I have mine set to degrees and it's
>the most accurate option. Some of us are hobby sailors and this option
>is most useful when determining a heading.
>
>Cheers,
>Robbie Sandberg
>-----Original Message-----
>From: loadstone-bounces at loadstone-gps.com
>[mailto:loadstone-bounces at loadstone-gps.com] On Behalf Of Shawn
>Kirkpatrick
>Sent: 12 October 2007 10:27
>To: loadstone at loadstone-gps.com
>Subject: Re: [Loadstone] Clock-face cardinal discrepancy in exploration
>mode
>
>I tend to really like this idea.
>As I see it the simplified cardinal (8 directions) are standard on any
>compass dial and we didn't have to invent anything. A clock face has
>12 standard positions so fits badly in to an 8 key interface. It could
>be
>made to fit by doing the every 90 minute thing but that's a rather
>non-standard way of doing things. If we left in all the other half hours
>the
>question would come up as to which key to press to move in a given
>direction. This is kind of the problem now. This can also occure if the
>setting is set to just cardinal (all 32 compass points). The other
>problem
>with clock face is that every point is reported as being at 12 o'clock
>since
>it is in relation to the direction of travel.
>All this being said, is the exploration point direction setting needed?
>Does
>anyone have this set to anything other than the simplified (8
>directions)
>cardinal? If we just remove this setting it might solve a lot of
>problems.
>
>On Fri, 12 Oct 2007, Rob Melchers wrote:
>
> > In Exploration mode the user decides in which direction he wants to
>'look' by
> > pressing a rather intuitive key. As a confirmation the program states
>the
> > direction of the found point. Since the user is not moving there's no
> > direction in which he is moving and thus no relevance in the clockface
>way of
> > presenting that direction. Take out the clockface menu item and the
>whole
> > thing is resolved.
> >
> > Rob
> >
> > At 10/12/2007, you wrote:
> >> Hi,
> >>
> >> I understand what Dave is suggesting and yes Shawn you are correct
>with
> >> your key-to-clockface assignments.
> >>
> >> Sometimes when people are describing directions in terms of clockface
> >> directions they will use terminology such as 6:30.  Which affectively
> >> means right of 6:00 and left of 7:00.
> >>
> >> I see how this method for some would be better than the current
>limited
> >> clockface directions in Exploration mode since it would use all eight
>keys
> >> but the :30 terminology may confuse some as indeed it has.
> >>
> >> If we wanted to get right down to it the GPS/NMEA protocol measures
> >> direction in degrees which means there are 360 potential directions.
>This
> >> means that any other form of reference (such as cardinal, clockface
>etc)
> >> is only an aproximation anyway!
> >>
> >> Monty
> >>
> >>
> >> On Thu, 11 Oct 2007, Shawn Kirkpatrick wrote:
> >>
> >> > I can usually follow things but I'm completely lost on this one.
>Adding
> >> the
> >> > half hours would give 24 points with only 8 direction keys. This
>leaves
> >> 16
> >> > directions you can't exactly hit. If I've got this right the
>pattern
> >> would
> >> > be: 12:0 1:30 3:0 4:30 6:0 7:30 9:0 11:30. Not what I'd call an
>intuitive
> >> > pattern.
> >> >
> >> > On Thu, 11 Oct 2007, Dave Mielke wrote:
> >> >
> >> >> [quoted lines by Shawn Kirkpatrick on 2007/10/11 at 17:04 -0700]
> >> >>
> >> >>> Wouldn't this make the problem worse?
> >> >>
> >> >> No, as it adds 12 more points for a total of 24.
> >> >>
> >> >>> The biggest problem is that there's 12 directions on the clock
>face but
> >> only 8
> >> >>> direction keys.
> >> >>
> >> >> But if you add the half hours, thereby getting 24 points on the
>clock
> >> face, and
> >> >> since 24 is divible by 8, the problem is resolved.
> >> >>
> >> >>> I'm also not sure what direction something like 4:30 would
>represent.
> >> It's
> >> >>> been a long time since I've used an analog clock but wouldn't
>something
> >> like
> >> >>> 4:30 represent two different directions?
> >> >>
> >> >> Don't worry about the minute hand. 4:30 would map to the 9 key,
>i.e. to
> >> 135
> >> >> degrees, since the hour hand would be pointing exactly half way
>between
> >> 4:00
> >> >> and 5:00.
> >> >>
> >> >> --
> >> >> Dave Mielke           | 2213 Fox Crescent | I believe that the
>Bible is
> >> the
> >> >> Phone: 1-613-726-0014 | Ottawa, Ontario   | Word of God. Please
>contact
> >> me
> >> >> EMail: dave at mielke.cc | Canada  K2A 1H7   | if you're concerned
>about
> >> Hell.
> >> >> http://FamilyRadio.com/                   |
>http://Mielke.cc/bible/
> >> >> _______________________________________________
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> >> >> http://www.loadstone-gps.com/mailman/listinfo/loadstone
> >> >>
> >> > _______________________________________________
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