Subject: RE: [Geomedia-l] GeoTIFF: from INGR to ESRI[Scanned]

[Frost, Steve]

Alex,

Please see the following from a techie colleague - it appears that all
ESRI require (prior to 9.2) is one extra GeoKEY:

Regards,Steve,
:
:
I had to add a GeographicTypeGeokey entry. This key can be included as
well as, or instead of, the GeogGeodeticDatumGeokey and the
GeogGeogEllipsoidGeokey entries.

Example:

BEFORE
Geotiff_Information:
   Version: 1
   Key_Revision: 1.0
   Tagged_Information:
      ModelTiepointTag (2,3):
         0                0                0                
         -27492.845       3431465.46       0                
      ModelPixelScaleTag (1,3):
         2.11686629       2.11686629       0                
      End_Of_Tags.
   Keyed_Information:
      GTModelTypeGeoKey (Short,1): ModelTypeProjected
      GTRasterTypeGeoKey (Short,1): RasterPixelIsArea
      GeogGeodeticDatumGeoKey (Short,1): Datum_WGS84
      GeogEllipsoidGeoKey (Short,1): Ellipse_WGS_84
      ProjectedCSTypeGeoKey (Short,1): User-Defined
      PCSCitationGeoKey (Ascii,34): "Transverse Mercator; WGS84; WGS84"
      ProjectionGeoKey (Short,1): User-Defined
      ProjCoordTransGeoKey (Short,1): CT_TransverseMercator
      ProjLinearUnitsGeoKey (Short,1): Linear_Meter
      ProjNatOriginLongGeoKey (Double,1): 62               
      ProjNatOriginLatGeoKey (Double,1): 0                
      ProjFalseEastingGeoKey (Double,1): 0                
      ProjFalseNorthingGeoKey (Double,1): 0                
      ProjScaleAtNatOriginGeoKey (Double,1): 0.9996           
      End_Of_Keys.

   End_Of_Geotiff.

AFTER
Geotiff_Information:
   Version: 1
   Key_Revision: 1.0
   Tagged_Information:
      ModelTiepointTag (2,3):
         0                0                0                
         -27909.57        3320674.64       0                
      ModelPixelScaleTag (1,3):
         2.11692545       2.11692545       0                
      End_Of_Tags.
   Keyed_Information:
      GTModelTypeGeoKey (Short,1): ModelTypeProjected
      GTRasterTypeGeoKey (Short,1): RasterPixelIsArea
      GeographicTypeGeoKey (Short,1): GCS_WGS_84   ***NEW***
      GeogGeodeticDatumGeoKey (Short,1): Datum_WGS84
      GeogEllipsoidGeoKey (Short,1): Ellipse_WGS_84
      ProjectedCSTypeGeoKey (Short,1): User-Defined
      PCSCitationGeoKey (Ascii,34): "Transverse Mercator; WGS84; WGS84"
      ProjectionGeoKey (Short,1): User-Defined
      ProjCoordTransGeoKey (Short,1): CT_TransverseMercator
      ProjLinearUnitsGeoKey (Short,1): Linear_Meter
      ProjNatOriginLongGeoKey (Double,1): 63               
      ProjNatOriginLatGeoKey (Double,1): 0                
      ProjFalseEastingGeoKey (Double,1): 0                
      ProjFalseNorthingGeoKey (Double,1): 0                
      ProjScaleAtNatOriginGeoKey (Double,1): 0.9996           
      End_Of_Keys.
   End_Of_Geotiff.

Steve Baker
Technical Support
Geographic Applications Branch
Capability Division