[MLB-WIRELESS] New Node Coordinates?
Nick Sibbing
nick.sibbing at arts.monash.edu.au
Wed Apr 28 17:00:15 EST 2004
Ian you are a scholar and a gentleman thanks very much I'm back in leafy
Warranwood all is good
so for the less mathematical of us you need to divide the first 2
figures after the degrees (minutes) by 60 and then divide the 2nd 2
figures by 3600 and add those 2 decimals together and put them after the
whole degrees.
This worked for me but no wonder there were a few confused nodes out
with me in the middle of nowhere. Maybe a summary of this email could be
added to the add node page?
Regards Nick Sibbing
Ian Donaldson wrote:
>
> Nick,
>
> There are a couple of ways of expressing co-ordinates, but they are
> variations on either degrees, minutes, seconds, or decimal notation. There
> are 60 minutes in each degree and 60 seconds in each minute, just like
> time.
>
> When it is written degrees, minutes, seconds as below:
>
> 37 46' 03" S
>
> It is actually saying that the co-ordinate is 37 degrees + 46/60 of a degree
> + 3/60 of a minute (or 3/3600 of a degree).
>
> So in decimal notation it is 37 + 0.766666.. + 0.000833333... or 37.7675
> degrees.
>
> Just to be painful, sometimes people write co-ordinates as degrees, minutes,
> but seconds in decimal, e.g. 36 46.05' S.
>
> Oh, and sometimes the "N E S W" comes before the co-ordinate rather than
> after.
>
> Converting from a decimal back to degrees, minutes seconds is relatively
> straightforward, e.g. 37.7675, write "37" and subtract 37, leaving .7675.
> Multiply that by 60, giving 46.05. Write "46'" and subtract it, leaving
> 0.05. Multiply that by 60, giving 3, which is your seconds '03"'.
>
> Ian
>
> On Wed, 28 Apr 2004 03:37 pm, Nick Sibbing wrote:
> > Just added a new node for a mate in Kerry Rd Warranwood but something
> > isn't quite right with the coordinates. Locfinder shows him to be 43 km
> > from my place in Montrose (should be about 10-12)
> >
> > I found the block on Vic MAp ok and the coordinates in the status bar
> > are
> > 37 46' 03" S and 145 15' 42" E
> >
> > I checked another node in Warranwood BEA and they show Lat -37.7694 Long
> > 145.2407
> >
> > so this looks good and my theory is that the lat/long is made up of the
> > figures from the status bar with a dot after the forst 2 and the other
> > 4 concatenated.
> >
> > Problem is most other nodes have a 7 digit figure rather than 6 and when
> > I add the node it ends up in the middle of nowhere. I can't tell from
> > the map but there aren't any roads and ther seem to be a few other
> > confused nodes out there as well eg Box Hill and Scoresby nodes. At
> > least I'm in Vic as it warns for non vic locations but its a bit lonely.
> >
> > So if anyone can shed any light on what my correct coordinates are that
> > would be great and it might help someone else to add it to the create
> > node page.
> >
> > Regards Nick Sibbing
> >
> > To unsubscribe: send mail to majordomo at wireless.org.au
> > with "unsubscribe melbwireless" in the body of the message
>
> --
> Ian Donaldson, SA @ MI -- ian at myinternet.com.au
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