|GeoTIFF Code||CT_MillerCylindrical (20)|
|OGC WKT Name||Miller_Cylindrical|
|Supported By||GeoTIFF, PROJ.4, OGC WKT|
|Name||EPSG #||GeoTIFF ID||OGC WKT||Units||Notes|
|Latitude of projection center||1||ProjCenterLat||latitude_of_center||Angular||This is normally zero and optional in GeoTIFF.|
|Longitude of projection center||2||ProjCenterLong||longitude_of_center||Angular|
Intergraph uses NatOriginLat and NatOriginLong instead of ProjCenterLat/Long.
Intergraph also supplies a scale at the origin, which isn't in the spec. I am ignoring this for now, but eventually a pass should be made adding scale as an option for any projection it can be made to work for as per Peter Laskowski's suggestion.
+proj=mill +lat_0=Latitude at projection center +lon_0=Longitude at projection center +x_0=False Easting +y_0=False Northing