[mapserver-users] projection help please

[woodbri at swoodbridge.com]

YES! Chip nails it!
Thank you, this was starting to drive me crazy!

Many thanks,
   -Steve

On 24 Jul 2002 at 12:57, Hankley, Chip wrote:

> Steve -
> 
> IF you're state plane data is in feet, then you may need to add a line to
> your projection def that will do the feet to meter conversion. I had a
> similar problem with some state plane data that was in feet. Here's the
> projection def for the layer that I was using.
> 
>   PROJECTION
>     "proj=lcc" 
>     "lat_1=45.056389" 
>     "lat_2=44.745278" 
>     "lat_0=44.405556" 
>     "lon_0=-89.770000" 
>     "x_0=74676.149352" 
>     "y_0=0" 
>     "ellps=GRS80"
>     "datum=NAD83"
>     "to_meter=0.3048006096" <-- THIS LINE
>     "no_defs"
>   END
> 
> This has always been confusing to me... and I just monkey around w/ it 'til
> it works. We end up w/ a lot of SP data in feet...parameters are in feet,
> etc.
> 
> Anyway, this worked for me. HTH.
> 
> Chip
> 
> -----Original Message-----
> From: woodbri at swoodbridge.com [mailto:woodbri at swoodbridge.com]
> Sent: Wednesday, July 24, 2002 12:07 PM
> To: mapserver-users at 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
>