[maplab-users] RE: [mapserver-users] projection help please

[woodbri@swoodbridge.com]

On 24 Jul 2002 at 13:31, Ed McNierney wrote:

> Steve -
> 
> I'm not sure about this, but have you tried adding a "datum=NAD83" to the latlong layers?  I always include a datum or ellpsoid in all my projection definitions - I'm not sure what would be the default since your output projection specifies a datum and the input latlong layers do not.

Good suggestion, but that didn't help. I zoomed way out and it looks 
like the roads layers are rendering but doing so unprojected! Like 
mapserver thinks that are already projected and they are being drawn 
as if the lat/long is in projected feet. Here the mapserver output 
string:

MapScript Version ($Revision: 1.104.2.1 $ $Date: 2002/06/03 14:19:53 
$)
MapServer version 3.6.1-dev OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG 
OUTPUT=WBMP SUPPORTS=PROJ SUPPORTS=TTF SUPPORTS=WMS_SERVER 
SUPPORTS=WMS_CLIENT INPUT=TIFF INPUT=EPPL7 INPUT=JPEG INPUT=OGR 
INPUT=GDAL INPUT=SHAPEFILE

-Steve

> 	- Ed
> 
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA  01863
> ed@topozone.com
> (978) 251-4242 
> 
> -----Original Message-----
> From: woodbri@swoodbridge.com [mailto:woodbri@swoodbridge.com]
> Sent: Wednesday, July 24, 2002 1:07 PM
> To: mapserver-users@lists.gis.umn.edu
> Subject: [mapserver-users] projection help please
> 
> 
> Arrrgh! This is my first attempt to work with layers in two different 
> projections. I can get parcels to display, but not the roads layers 
> below. The roads display just fine by themselves unprojected. The 
> parcels show up just fine, they are in FL North state plane 
> projection #903 and the roads are both latlong projection.
> 
> Any help would be greatly appreciated.
>   -Steve W.
> 
> 
> MAP
>   NAME "gadsden"
>   STATUS ON
>   EXTENT 1850043.62398028 512249.445079203 2012425.97125672 
> 626430.515528745 
>   SIZE 400 400 
>   IMAGECOLOR 255 255 255
>   UNITS FEET
>   IMAGETYPE GIF
>   WEB
>     IMAGEPATH "/home/httpd/html/web2/tmp/"
>     IMAGEURL "/web2/tmp/"
>   END
>   PROJECTION
>     "proj=lcc"
>     "datum=NAD83"
>     "lon_0=-84d30"
>     "lat_1=30d45"
>     "lat_2=29d35"
>     "lat_0=29"
>     "x_0=600000"
>     "y_0=0"
>     "no_defs"
>   END
>   LEGEND
>     STATUS ON
>   END
>   SCALEBAR
>     STATUS ON
>     UNITS MILES
>     SIZE 400 10 
>     STYLE 1
>     COLOR 0 0 0
>     TRANSPARENT ON
>   END
>   LAYER
>     NAME "parcels"
>     STATUS DEFAULT
>     DATA "/data/maps/gadpar"
>     TYPE POLYGON
>     UNITS FEET
>     LABELITEM "shortparce"
>     LABELMAXSCALE 10000
>     PROJECTION
>       "proj=lcc"
>       "datum=NAD83"
>       "lon_0=-84d30"
>       "lat_1=30d45"
>       "lat_2=29d35"
>       "lat_0=29"
>       "x_0=600000"
>       "y_0=0"
>       "no_defs"
>     END
>     CLASS
>       COLOR 153 255 204
>       OUTLINECOLOR 0 0 0
>       LABEL
>         TYPE BITMAP
>         SIZE TINY
>         COLOR 0 0 0
>         OUTLINECOLOR 255 255 255
>       END
>     END
>   END
>   LAYER
>     NAME "major roads"
>     STATUS ON
>     DATA "/data/maps/majroads"
>     TYPE LINE
>     UNITS DD
>     PROJECTION
>       "proj=latlong"
>     END
>     CLASS
>       COLOR 255 0 0
>     END
>   END
>   LAYER
>     NAME "minroads"
>     STATUS ON
>     DATA "/data/maps/minroads"
>     TYPE LINE
>     UNITS DD
>     PROJECTION
>       "proj=latlong"
>     END
>     CLASS
>       COLOR 0 255 0
>     END
>   END
> END
> 
>