On Tue, Nov 30, 2010 at 5:08 PM, Henri Bergius wrote:
> Hi,
>
> On Fri, Nov 26, 2010 at 4:05 PM, Derick Rethans wrote:
>> You surely would like to call this a "point" instead? Also, are you
>> thinking of only doing WGS-84 here?
>
> WGS-84 only for now. But agreed, Point makes more sense.
maybe reference systems should be added as own area
but a given reference system could be used internally and
recalculated on getting and setting
i would prefer UTM as this "internal" reference system
>
>> "Bounding box at a radius" ... that doesn't make sense. A box is not a
>> circle :P
>
> True, not the best wording there. The edges of the bbox are at the end
> of the radius.
>
>> All of those services provide information in a slightly different way
>> though. Especially with admin-levels. There ought to be an abstraction
>> for this.
>
> Certainly.
>
>> - Obtaining the location through Google's geolocation services:
>> http://talks.php.net/show/maps-afup10/18 and
>> http://talks.php.net/show/maps-ipc10/22 (by providing ssid/mac
>> addresses).
>> - Skyhook also provides an interface.
>
> Sure, why not. Maybe not in the initial version but would make sense
> to add. There are some special scenarios where talking to GeoClue
> would also make sense.
>
>> Derick
>
> /Henri
>
my other ideas for this component would be
- Create a Point with all 3 axes latitude, longiutude and altitude and
a reference
system. EPSG Codes should be used for this
- Create Lines based on Points
- Create Shapes based on Points
- Wotking with differnet reference systems (support for EPSG Codes ,
Proj4 Support)
- Convert Points between differnt reference systems
- Working with formats like GeoRSS, GeoJSON, GPX and KML
- Tiein for Databases with GIS Support
- Tiein for Databases without GIS Support
Links:
http://trac.osgeo.org/proj/
http://spatialreference.org/
http://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system
http://proj4js.org/
http://www.openlayers.org/
http://www.epsg-registry.org/
--
Mit freundlichen Grüßen,
Martin Holzhauer
https://www.xing.com/profile/Martin_Holzhauer
http://de.linkedin.com/in/martinholzhauer
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