[Qgis-user] matching .prj (ArcGIS) with CRS in QGIS

[K Imran M]

Dear Andre,

Is it possible, because of the different WKT string specification, my shape
files was misaligned for about 200 meters to 300 meters when I chose Kertau
(RSO)/RSO Malaya (m) (EPSG:3168) as the projection (OTF)?
In view of that issue, can you advise me if I
1) can I still use the Kertau (RSO)/RSO Malaya (m) (EPSG:3168) projection?
Or
2) should I transform the projection to any other projection? Or
3) should I use the User-define CRS? If yes, how can I do that?

I apologize for any trivial questions here. Your responses is very much
appreciated.

Thanks and best wishes,

Kamarul






On Sun, May 31, 2015 at 10:00 PM, Andre Joost <andre+joost at nurfuerspam.de>
wrote:

> Am 30.05.2015 um 23:31 schrieb Nicolas Cadieux:
>
>> Hi,
>> I am assuming QGIS cannot read this projection?
>>
>
> You are right, the projection name is not known for QGIS.
>
> The WKT string for Kertau RSO is:
>
>
> PROJCS["Kertau (RSO) / RSO Malaya (m)",
>     GEOGCS["Kertau (RSO)",
>         DATUM["Kertau_RSO",
>             SPHEROID["Everest 1830 (RSO 1969)",6377295.664,300.8017,
>                 AUTHORITY["EPSG","7056"]],
>             AUTHORITY["EPSG","6751"]],
>         PRIMEM["Greenwich",0,
>             AUTHORITY["EPSG","8901"]],
>         UNIT["degree",0.0174532925199433,
>             AUTHORITY["EPSG","9122"]],
>         AUTHORITY["EPSG","4751"]],
>     PROJECTION["Hotine_Oblique_Mercator"],
>     PARAMETER["latitude_of_center",4],
>     PARAMETER["longitude_of_center",102.25],
>     PARAMETER["azimuth",323.0257905],
>     PARAMETER["rectified_grid_angle",323.1301023611111],
>     PARAMETER["scale_factor",0.99984],
>     PARAMETER["false_easting",804670.24],
>     PARAMETER["false_northing",0],
>     UNIT["metre",1,
>         AUTHORITY["EPSG","9001"]],
>     AXIS["Easting",EAST],
>     AXIS["Northing",NORTH],
>     AUTHORITY["EPSG","3168"]]
>
> which looks similar to the one given, but the ellipsoid major axis is
> different, and False Easting.
>
> For the different namings of the projection, see
>
> https://trac.osgeo.org/gdal/ticket/2745
> http://lists.maptools.org/pipermail/proj/2010-September/005349.html
>
> HTH,
> André Joost
>
>
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-- 
Dr. Kamarul Imran Musa,
M.D. M.Community.Med.
Associate Professor (Epidemiology and Biostatistics) &
Public Health Physician
Dept of Community Medicine
School of Medical Sciences
16150 Universiti Sains Malaysia, Kbg Kerian
Kelantan
Thomson Reuters researchID: http://www.researcherid.com/rid/G-4864-2010
Google-scholar:
http://scholar.google.co.uk/citations?user=aZyayMgAAAAJ&hl=en&authuser=1
blog: http://designdataanalysis.wordpress.com
email : drkamarul at usm.my <drkamarul at kb.usm.my> , k.musa at lancaster.ac.uk
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