[Qgis-developer] About Korean CRS

[Frank Warmerdam]

On Wed, Jan 18, 2012 at 10:14 AM, Sanghee Shin <endofcap at gmail.com> wrote:
> Dear all,
>
> South Korea made major CRS changes in 2010 and those new CRS were registered to official EPSG code in June, 2010. Those codes are EPSG:5173 ~ 5188. You can see those CRS information at http://www.epsg-registry.org/ by filtering Korea.
>
> However we, Korean QGIS users who are mainly using QGIS 1.7.3, still couldn't find the new Korean CRS info in QGIS.
>
> Anybody know the reasons or anybody could help us to solve this issue?

Sanghee,

I see that EPSG:5173 is supported by the GDAL 1.9 release.
I'm a bit vague on how the QGIS srs'es are managed but I
imagine the new CRSes can be added.  For EPSG:5173 I
get the following definition from gdalsrsinfo.  Does that
look reasonable to you?  Should there be a datum
definition for the Korean_Datum_1985 to WGS84 available?

PROJ.4 : '+proj=tmerc +lat_0=38 +lon_0=125.0028902777778 +k=1
+x_0=200000 +y_0=500000 +ellps=bessel +units=m +no_defs '

OGC WKT :
PROJCS["Korean 1985 / Modified West Belt",
    GEOGCS["Korean 1985",
        DATUM["Korean_Datum_1985",
            SPHEROID["Bessel 1841",6377397.155,299.1528128,
                AUTHORITY["EPSG","7004"]],
            AUTHORITY["EPSG","6162"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4162"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",38],
    PARAMETER["central_meridian",125.0028902777778],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",200000],
    PARAMETER["false_northing",500000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["X",NORTH],
    AXIS["Y",EAST],
    AUTHORITY["EPSG","5173"]]

Best regards,
-- 
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