Re: GEO question

[John Stracke <francis@xxxxxxxx>]

"Pär Lannerö" wrote:

> In order for us to be able to use the GEO coordinates in a
> GIS application we need to know what coordinate system to use. Ie.
> what geographic datum, hemisphere, offset etc. The information seems
> to be missing in RFC2445

? It looks to me like it's there:

     The longitude represents the
        location east or west of the prime meridian as a positive or
     negative
        real number, respectively.
     [...]
     Latitudes north of the equator shall be specified by a plus
     sign (+),
        or by the absence of a minus sign (-), preceding the digits
        designating degrees. Latitudes south of the Equator shall be

        designated by a minus sign (-) preceding the digits
     designating
        degrees. A point on the Equator shall be assigned to the
     Northern
        Hemisphere.

        Longitudes east of the prime meridian shall be specified by
     a plus
        sign (+), or by the absence of a minus sign (-), preceding
     the digits
        designating degrees. Longitudes west of the meridian shall
     be
        designated by minus sign (-) preceding the digits
     designating
        degrees. A point on the prime meridian shall be assigned to
     the
        Eastern Hemisphere. A point on the 180th meridian shall be
     assigned
        to the Western Hemisphere.
     [...]

Do you need something more than this?

It looks to me as if the mention of FIPS 70-1 is not normative (it's not
even in the References); the text just mentions it to make it clear that
the spec was copied from there.

--
/=================================================================\
|John Stracke    | http://www.ecal.com |My opinions are my own.   |
|Chief Scientist |================================================|
|eCal Corp.      |I'm not imaginary. I'm ontologically challenged.|
|francis@xxxxxxxx|                                                |
\=================================================================/