[Qgis-user] Adding Projections

[Werner Horsch]

I've installed QGIS 2.2 on Win as well, there the projection is available,
but it looks some how strange, there must be any difference between both,
this has to be the DATUM
POSGAR 2007 is WGS84 EPSG 1062
POSGAR 98     is WGS84 EPSG 6190
does some one knows what's the difference on this?

PROJCS["POSGAR 2007 / Argentina 7",
    GEOGCS["POSGAR 2007",
        DATUM["Posiciones_Geodesicas_Argentinas_2007",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            TOWGS84[0,0,0,0,0,0,0],
            AUTHORITY["EPSG","1062"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","5340"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",-90],
    PARAMETER["central_meridian",-54],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",7500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","5349"]]



PROJCS["POSGAR 98 / Argentina 7",
    GEOGCS["POSGAR 98",
        DATUM["Posiciones_Geodesicas_Argentinas_1998",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            TOWGS84[0,0,0,0,0,0,0],
            AUTHORITY["EPSG","6190"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4190"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",-90],
    PARAMETER["central_meridian",-54],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",7500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","22177"]]




On Thu, Jun 12, 2014 at 1:17 PM, Andre Joost <andre+joost at nurfuerspam.de>
wrote:

> Am 12.06.2014 15:57, schrieb Werner Horsch:
>
>> I'm running QGIS 2.0.1 Dufour on Linux
>>
>> I'd like to have POSGAR2007 "Argentina" Projection added on the projection
>> list, can someone give me a hint on this
>>
>
> The projection is available in QGIS 2.2 on Windows. Parameters are:
>
> +proj=tmerc +lat_0=-90 +lon_0=-72 +k=1 +x_0=1500000 +y_0=0 +ellps=GRS80
> +towgs84=0,0,0,0,0,0,0 +units=m +no_defs
>
> for Argentina 1. The others just have a different lon_0 and x_0.
>
> So no problem with datums. +towgs84 is all zero, even for Posgar94 and
> Posgar 98. Posgar 98 and 2007 have identical paramaters, Posgar94 has WGS84
> ellipsoid.
>
> HTH,
> André Joost
>
>
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