[mapserver-users] GPS to GIS

Benoît Andrieu bea at ixsea.com
Thu Aug 7 07:26:48 PDT 2008


Glad to know it helps.

But, in my own opinion, the difference between the results implies that 
something is wrong (on which side, i don't know).

It could be another coordinate system, or another datum...

Sorry but I am not a expert with coordinate systems.

Regards,
Benoît Andrieu

----- Original Message ----- 
From: "Peter Falk" <peter at nexus.dk>
To: <mapserver-users at lists.osgeo.org>
Sent: Thursday, August 07, 2008 11:35 AM
Subject: Re: [mapserver-users] GPS to GIS


> Hi Guys,
>
> Thanks for your input. It's been a great help. The fact that I'm now aware 
> of the translation - from WGS84 to UTM Zone 32 - has narrowed the problem 
> down.
>
> Peter
>
>
> Benoît Andrieu skrev:
>> Hi Peter,
>>
>> What do you mean with 'GIS' coordinates ?
>>
>> For me, GIS means Geographic Information System and is a very common 
>> term.
>> Looking at your 'GIS' coordinates I would say that your GIS coordinate 
>> system is a UTM 32 coordinate system.
>>
>> And in your case, you could use cs2cs 
>> (http://proj.maptools.org/man_cs2cs.html) in order to make the 
>> translation.
>>
>> cs2cs.exe +proj=latlong +datum=WGS84 +to +proj=utm +zone=32 
>> +datum=WGS84 -r
>> input : 54.9808N 8.86707E
>> output : 491492.61       6092662.95 0.00
>>
>> The results are not exactly accurate with yours but they are close enough 
>> to me (by what ? 600 meters ? ^^).
>>
>> I hope it will help.
>>
>> Regards,
>> Benoît Andrieu
>>
>> ----- Original Message ----- From: "Peter Falk" <peter at nexus.dk>
>> To: <mapserver-users at lists.osgeo.org>
>> Sent: Thursday, August 07, 2008 9:20 AM
>> Subject: [mapserver-users] GPS to GIS
>>
>>
>>> Hi David,
>>>
>>> Yes I know i was a bit vague. What I need is a simple function, that can 
>>> turn a point in GPS - a lattitude and a logitude value - into a point in 
>>> GIS.
>>>
>>> I.e. I got these coordinate:
>>> GPS: N: 54.9809  E: 8.86707
>>>
>>> that applies to
>>>
>>> GIS: X: 491055.41 Y: 6092507.928
>>>
>>> What I need is the correlation between the two.
>>>
>>> Regards
>>> Peter
>>>
>>> _______________________________________________
>>> mapserver-users mailing list
>>> mapserver-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>
>
>
> -- 
> Med venlig hilsen
> Peter Falk
> Nexus Kommunikation
> Østre Messegade 2
> 2650 Hvidovre
> 36 77 00 46
> www.nexus.dk
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