[postgis-users] Custom CRS/SRS

[Paul Ramsey]

insert into spatial_ref_sys
values (200000, 'NOONE', '0',
'PROJCS["Malaysia_Cassini_Kelantan",GEOGCS["GCS_Kertau",DATUM["D_Kertau",SPHEROID["Everest_1830_Modified",6377304.063,300.8017]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Cassini"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",102.8952083],PARAMETER["Scale_Factor",1],PARAMETER["Latitude_Of_Origin",4.946141667],UNIT["Meter",1]]',
'+proj=cass +lat_0=4.946141667 +lon_0=102.8952083 +x_0=0 +y_0=0
+ellps=evrst48 +units=m +no_defs');

On Thu, May 28, 2009 at 9:37 AM, Paul Ramsey <pramsey at opengeo.org> wrote:
> Bruce,
> Can you provide a known projected point?
> (x,y) in the old system
> (lat,lon) in WGS84
> Would help verify.
> P
>
> On Thu, May 28, 2009 at 9:25 AM, Bruce Foster <gis.foster at gmail.com> wrote:
>> All,
>> Apologies if this has been asked before and cross posting. Well, in dire
>> situation.
>> I'm working on a project in Malaysia and the ran into major road block
>> because of the local projection. All existing datasets are in
>> older Cassini projection. They have 9 state level Cassini projection for
>> cadastal work and they have different origin. It uses Everest 1830 Modified
>> for spheroid.
>> They are moving to their new projection called GDM2000 and they have EPSG
>> entries. But the older cassini dont have EPSG entries. this puts me in real
>> fix.
>> ArcGIS has the projection parameters for cassini and I dont find any details
>> in spatialreferece or EPSG.org.
>> My work involves GeoServer and PostGIS. Can you plesae guide and help me
>> with this? How do I put a custom projection and how do I work on a
>> projection that dont have EPSG? Since we work lot on EPSG with GeoServer and
>> PostGIS, how can we support the non standard one.
>> This is the CRS parameters;
>> PROJCS["Malaysia_Cassini_Kelantan",GEOGCS["GCS_Kertau",DATUM["D_Kertau",SPHEROID["Everest_1830_Modified",6377304.063,300.8017]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Cassini"],PARAMETER["False_Easting",0],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",102.8952083],PARAMETER["Scale_Factor",1],PARAMETER["Latitude_Of_Origin",4.946141667],UNIT["Meter",1]]
>> any guru out there help me?
>> another question, can this be reprojected to WGS84 using on the fly
>> reprojection in GeoServer and PostGIS?
>> Thanks a lot
>> Bruce Foster
>>
>>
>>
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>