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Co-ordinates conversion

 
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RedSkel
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Joined: Feb 05, 2005
Posts: 24

PostPosted: Sun Feb 06, 2005 12:33 am    Post subject: Co-ordinates conversion Reply with quote

Sorry if this topic has been covered - if so please can someone give me the link - but I have TTN3, 3950 and NAVMAN sleeve. Only had it a few days and want to put some PoI's on.

I am using OV2 tools to read and create the Overlay files. However, the co-ordinates on TTN3 are in the format:

000 52'53"W
051 56'39"N

for example, but the output .asc file lists it differently, in another format like -0.77899 , 51.83119

Is there a conversion tool I can use or can somebody explain the process?

Many thanks.
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Nomada
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Joined: Nov 01, 2003
Posts: 131
Location: Hampshire

PostPosted: Sun Feb 06, 2005 9:44 am    Post subject: Re: Co-ordinates conversion Reply with quote

Hi RedSkel,

The conversion formula is very easy, when you know...

degrees+(minutes/60)+(seconds/3600)

Remember: when the longitude is West you must make it negative and same for South's latitude. That's all.

Nomada
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RedSkel
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Joined: Feb 05, 2005
Posts: 24

PostPosted: Sun Feb 06, 2005 2:15 pm    Post subject: Reply with quote

Many thanks.
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Oldie
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Joined: 22/11/2002 13:33:48
Posts: 992
Location: Surrey, UK

PostPosted: Sun Feb 06, 2005 5:43 pm    Post subject: Re: Co-ordinates conversion Reply with quote

RedSkel wrote:
Sorry if this topic has been covered - if so please can someone give me the link - but I have TTN3, 3950 and NAVMAN sleeve. Only had it a few days and want to put some PoI's on.

I am using OV2 tools to read and create the Overlay files. However, the co-ordinates on TTN3 are in the format:

000 52'53"W
051 56'39"N

for example, but the output .asc file lists it differently, in another format like -0.77899 , 51.83119

Is there a conversion tool I can use or can somebody explain the process?

Many thanks.


The TomTom MakeOV2 program and my own programs will accept data in degrees, mins, secs format but you would have to format it as follows (with longitudes west of Greenwich negative)

-000'52"53, 051'56"39,"text"

but you can also leave out the leading zeros, ie
-0'52"53, 51'56"39,"text"

It is also acceptable to relace both ' and " with a colon character : . This is the form that I prefer.

Richard
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Various TomToms, Garmin eTrex Legend, GPSMAP 60CSx, Oregon 550t, Forerunner 405
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RedSkel
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Posts: 24

PostPosted: Sun Feb 06, 2005 9:07 pm    Post subject: Reply with quote

Thank you, Richard.
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