You are here: > ESRI Forums > arcgis desktop discussion forums > Thread Replies

ArcGIS Desktop Discussion Forums

ArcGIS Desktop - Projections, Projection Engine forum

Projecting Gauss Kruger to Geographic or UT...   John Mickelson Jan 03, 2006
Re: Projecting Gauss Kruger to Geographic o...   Melita Kennedy Jan 03, 2006
Report Inappropriate Content • Top • Print • This Forum is closed for replies.    
Subject Projecting Gauss Kruger to Geographic or UTM 
Author John Mickelson 
Date Jan 03, 2006 
Message Hi,
I've been stumped with projecting some data from Uruguay, which has been sent as residing in:

Gauss Kruger (a variant of TM).


PROJCS["Pulkovo_1995_GK_Zone_22"
GEOGCS["GCS_Pulkovo_1995"
DATUM["D_Pulkovo_1995"
SPHEROID["Krasovsky_1940",6378245.0,298.3]]
PRIMEM["Greenwich",0.0]
UNIT["Degree",0.0174532925199433]]
PROJECTION["Gauss_Kruger"]
PARAMETER["False_Easting",22500000.0]
PARAMETER["False_Northing",0.0]
PARAMETER["Central_Meridian",129.0]
PARAMETER["Scale_Factor",1.0]
PARAMETER["Latitude_Of_Origin",0.0]
UNIT["Meter",1.0]]

and trying to get it into either (or ideally both)

Geographic WGS84 and\or UTM Zone 22S WGS84

I've been trying the following:

(any help is appreciated... ArcGIS "Project" seems to run, but the output Shapefiles end up corrupted). 
 
Input Coordinate System:
                  Name:    Pulkovo_1995_GK_Zone_22
                  POSC:    20022
                  Unit:    Meter
       Geographic CSYS:    GCS_Pulkovo_1995
                 Datum:    D_Pulkovo_1995
        Prime Meridian:    Greenwich
         False Easting:    22500000
        False Northing:    0
       Base Projection:    Gauss_Kruger
      Central_Meridian:    129.0
      Central_Parallel:    0.0
          Scale_Factor:    1.0

Input Geographic Transformation:
   none

Output Geographic Transformation:
   none

Output Coordinate System:
                  Name:    WGS_1984_UTM_Zone_22S
                  POSC:    32722
                  Unit:    Meter
       Geographic CSYS:    GCS_WGS_1984
                 Datum:    D_WGS_1984
        Prime Meridian:    Greenwich
         False Easting:    500000
        False Northing:    10000000
       Base Projection:    Transverse_Mercator
      Central_Meridian:    -51.0
      Central_Parallel:    0.0
          Scale_Factor:    0.9996

or

Output Coordinate System:
                  Name:    WGS_1984_UTM_Zone_22S
                  POSC:    32722
                  Unit:    Meter
       Geographic CSYS:    GCS_WGS_1984
                 Datum:    D_WGS_1984
        Prime Meridian:    Greenwich
         False Easting:    500000
        False Northing:    10000000
       Base Projection:    Transverse_Mercator
      Central_Meridian:    -51.0
      Central_Parallel:    0.0
          Scale_Factor:    0.9996
 
   
Report Inappropriate Content • Top • Print • This Forum is closed for replies.    
Subject Re: Projecting Gauss Kruger to Geographic or UTM 
Author Melita Kennedy 
Date Jan 03, 2006 
Message For the rest of you, if you're interested...

John and I have talked off-list. The data's definitely not in GK zone 22. The term Gauss-Kruger is used as a map projection name, like Albers, and as a projected or grid coordinate system, like UTM or State Plane. Gauss-Kruger,
the map projection, is the same as Transverse
Mercator.

He's tried defining the data as UTM zone 22S, but I think it's still not quite lining up. I found a reference in Cliff Mugnier's PE&RS column that Uruguay uses a central meridian of 55 48 W, but no other parameters are listed.

Some other websites appear to state that the other "UTM" parameters are used, although data is based on the Yacare geographic coordinate system, and there's a datum transformation.

Melita 
  Melita Kennedy
ESRI Product Specialist