[mapserver-users] Projection issue

[Rahkonen Jukka]

Hi,
 
Have defined also the input projection inside LAYER?  It is necessary to know both the input and output or otherwise it is not possible to reproject.  If layer projection is not given Mapserver is using the output projection as default.  That's why your first layer shows because it is originally in the output projection or at least close to it.  The other dataset is clearly using another projection.  It is odd to me, but perhaps it is this one I found from the Mapserver epsg file
# NAD83 / Georgia West (ftUS)
<2240> +proj=tmerc +lat_0=30 +lon_0=-84.16666666666667 +k=0.9999 +x_0=699999.9998983998 +y_0=0 +ellps=GRS80 +datum=NAD83 +to_meter=0.3048006096012192 +no_defs  <>
 
If that's the case you can use "init=epsg:2240" as input projection.
 
-Jukka Rahkonen-
 
 
 


________________________________

	Lähettäjä: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] Puolesta qazi iqbal
	Lähetetty: 19. tammikuuta 2011 2:15
	Vastaanottaja: mapserver-users
	Aihe: [mapserver-users] Projection issue
	
	
	I have a mapfile in which I have specified the main output projection as
	 
	PROJECTION
	"proj=latlong"
	"ellps=WGS84"
	"datum=WGS84"
	END

	Below is details of one of the layers that shows perfectly
	 
	Layer name: subdiv
	Geometry: Polygon
	Feature Count: 7
	Extent: (-84.276822, 33.752808) - (-83.799104, 34.167873)
	Layer SRS WKT:
	GEOGCS["GCS_North_American_1983",
	    DATUM["North_American_Datum_1983",
	        SPHEROID["GRS_1980",6378137,298.257222101]],
	    PRIMEM["Greenwich",0],
	    UNIT["Degree",0.017453292519943295]]
	
	Here is one more layer which is projected and I was expecting it to change projection on fly. But it does not show. Below is the details.
	 
	Geometry: Polygon
	Feature Count: 703
	Extent: (1905254.375111, 1140017.900055) - (2497321.299899, 1670166.374861)
	Layer SRS WKT:
	PROJCS["NAD_1983_StatePlane_Georgia_West_FIPS_1002_Feet",
	    GEOGCS["GCS_North_American_1983",
	        DATUM["North_American_Datum_1983",
	            SPHEROID["GRS_1980",6378137.0,298.257222101]],
	        PRIMEM["Greenwich",0.0],
	        UNIT["Degree",0.0174532925199433]],
	    PROJECTION["Transverse_Mercator"],
	    PARAMETER["False_Easting",2296583.333333333],
	    PARAMETER["False_Northing",0.0],
	    PARAMETER["Central_Meridian",-84.16666666666667],
	    PARAMETER["Scale_Factor",0.9999],
	    PARAMETER["Latitude_Of_Origin",30.0],
	    UNIT["Foot_US",0.3048006096012192]]
	 
	 
	I must be doing some mistake, can anyone help please.
	 
	Thanks and appreciate.

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