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4 Dec 2014
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Registered Users
HUBB regular
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Join Date: Aug 2012
Posts: 28
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GPS ref format help
Hoping someone can help with what I am sure is a very basic question!
I'm currently in Marrakech about to set out to do my first overland route from Chris Scott's book. I wanted to check I'm using his GPS coordinates right. I have a garmin oregan 300 loaded with t4a and have Olaf as well. My gps asks for coordinates in hddd°mm.mmm (map datum WGS84, map Spehroid WGS 84) format for example I am sat at N31°37.522 W007°59.292. Chris gives coordinates such as N30°31.91' W07°55.31
How do I expand these figures to 7 digit ones? For example do I add a 5 as the last figure so that I am in the middle? There are also lots of other formats for grids but nothing that seems to relate to the 6 figure ones chris uses.
I want to be sure I am using this unit correctly before I head out into the wild!
Thanks in advance!!
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4 Dec 2014
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Registered Users
Veteran HUBBer
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Join Date: Dec 2012
Location: Haarlem, The Netherlands
Posts: 177
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What you use is Dregees minutes.3decimals what he uses is Degrees minutes.2decimals. The las decimal is about a few meters so not so important unless he is using another map datum but as WGS 84 is most used I don't think so. Most probably it is mentioned somewhere in the book.
Just add a 0
GRTZ,
JP
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5 Dec 2014
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Super Moderator
Veteran HUBBer
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Join Date: Jun 2000
Posts: 4,934
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JP is right. I would not get bogged down with GPS waypoints until something goes wrong.
The tracks are use in the book are clear as a bell and Olaf (occasionally a little misaligned) will be a far more useful aid, day to day.
Ch
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