Hi All,
I am working on an Open Source GIS project and new to Spatial Reference
systems.
As we know the new Lucene Plugin for OrientDB (version 2.2) is enhanced
with Support of Complex Geometry like line, polygon etc.
I am exploring on adding a new spatial reference system native support for
storage and retrieval of spatial data in lucene Plugin for OrientDB.
Currently Lucene Engine supports well known WSG_84 reference system.
I would like to add a native support for a new SRS(Spatial Reference
System) i.e. EPSG:27700 and other. i don't want to go with SRS conversions
using external library like proj4.
As per my analysis for the support added in Lucene for WSG_84. I found
datum configuration parameters in PlanetModel class file like :
WGS84_MEAN = 6371009.0;
WGS84_POLAR = 6356752.314245;
WGS84_EQUATORIAL = 6378137.0;
PlanetModel WGS84 = new PlanetModel (1.0011188180710464,
0.9977622562211103);
which are used in Mathematical evaluations for calculating Flattering of
earth, North Pole, South Pole geographical reference Points etc.
I am suspecting this configuration are specific to WSG_84 Spatial reference
system only. Is my understanding correct?
And similarly, there will be new set of configuration needs to be defined
for other reference system to achieve a native support in the DB storage
and retrieval of GeoSpatial Data.
Or WSG_84 is a base reference system for all the other Reference Systems
and conversion has to happen?
Any suggestion will be very helpful.
Thanks in Advance.
Regards,
vikram
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