[mapserver-users] How to display coordinates in lat/long format on a map with UNITS=Meters?

[Jan Mantkowski]

Hi all,

i have a map with UNITS=Meters. (Still the europa example.)
What i do right now is to save coordinates in meters format as a layer. (I
really do not know what this meters mean, i choosed the coordinates to be
"inside" the extent, thats all).

Then i dispaly them together with the map data which is in meters to.
There are no projection settings at all right now.

So what do i need to do to display real lat /long data instead of that
artificial data?

Jan




I add the complete current europa.map:


NAME FIRSTMAP
SIZE 400 400
STATUS ON
EXTENT -5696501 1923039 5696501 11022882
UNITS Meters

SYMBOLSET "C:\Apache\htdocs\pn_71\html\modules\map5\symbols\symbols.txt"
FONTSET   "C:\Apache\htdocs\pn_71\html\modules\map5\fonts\fonts.txt"
SHAPEPATH "C:\Apache\htdocs\pn_71\html\modules\map5\data"
IMAGECOLOR 255 255 255

WEB
IMAGEPATH "c:\Apache\htdocs\tmp\"
IMAGEURL "/tmp/"
END

LAYER
NAME world
TYPE POLYGON
STATUS ON
DATA europa
	CLASS
		TEMPLATE void
		COLOR 200 200 200
		OUTLINECOLOR 0 0 0
		#END
	END
	TOLERANCE 10
END

LAYER
    NAME "X"
    DATA users
    STATUS ON
    TYPE POINT
	CLASS
		COLOR 255 0 0
		SYMBOL 'circle'
		SIZE 10
	END
END

  LAYER
    NAME "PN"
    DATA users
    STATUS ON
    TYPE ANNOTATION
    LABELITEM "username"
    SYMBOLSCALE 250000
    CLASS
      COLOR -1 -1 -1 # no marker will be drawn
      LABEL
      	POSITION AUTO
        SIZE MEDIUM
        COLOR 132 31 31
        OUTLINECOLOR 255 255 255
        BUFFER 4
      END
     END
  END



END






This is the shpdump:
C:\a>shpdump.exe europa.shp > europa.txt
Shapefile Type: Polygon   # of Shapes: 54
File Bounds: (-4362443.744, 3864199.098,4.16405e+202,0)
         to  ( 2916998.546, 9336805.431,0,0)

Shape:0 (Polygon)  nVertices=1258, nParts=4
  Bounds:(   31629.715, 4389343.606, 0, 0)
      to (  183200.478, 4723802.771, 0, 0)
 The File Bounds:  (MINX, MINY, MINZ, MINV)

               to   (MAXX, MAXY, MAXZ, MAXV)
 and
 EXTENT  MINX  MINY  MAXX  MAXY












-----Original Message-----
From: owner-mapserver-users at lists.gis.umn.edu
[mailto:owner-mapserver-users at lists.gis.umn.edu]On Behalf Of Tyler
Mitchell
Sent: Tuesday, March 26, 2002 3:52 PM
To: Jan Mantkowski
Cc: mapserver-users at lists.gis.umn.edu
Subject: Re: [mapserver-users] How to display coordinates in lat/long
format on amap with UNITS=Meters?



Have you looked into the PROJECTION parameters for your map file at all?
It sounds like you will want to set the PROJECTION for the whole map to
Decimal Degrees, then within each LAYER section define what the input
PROJECTION is.  If this sounds like what you are trying to do - then you
will need to get PROJECTION settings under your belt.  I think you will be
changing your UNITS parameter to something like DD for decimal degrees. I
haven't done it before though.  Someone else can probably comment with some
more intelligence.



                    "Jan Mantkowski"
                    <jan.mantkowski at gmx.de>             To:
"Mapserver-Users" <mapserver-users at lists.gis.umn.edu>
                    Sent by:                            cc:
                    owner-mapserver-users at lists.g       Fax to:
                    is.umn.edu                          Subject:
[mapserver-users] How to display coordinates in lat/long
                                                         format on a map
with UNITS=Meters?

                    03/26/2002 12:50 AM






Hi list,

i got stuck again.
It´s still the europa example.

What i do right now is to make shapefiles from "artificial" coordinates.
(Choosen to fit the EXTENT)
It works.

But, when i have coordinats in latitude and longitude, how to display the
resulting layer correct on the map that is in Meters?

I did a shpdump and got this:

Shapefile Type: Polygon   # of Shapes: 54
File Bounds: (-4362443.744, 3864199.098,4.16405e+202,0)
         to  ( 2916998.546, 9336805.431,0,0)
Shape:0 (Polygon)  nVertices=1258, nParts=4
Bounds:(   31629.715, 4389343.606, 0, 0)
    to (  183200.478, 4723802.771, 0, 0)


The europa.map looks like this:
NAME FIRSTMAP
SIZE 400 400
STATUS ON
EXTENT -5696501 1923039 5696501 11022882
UNITS Meters
...

The layer to display the data in meter format looks like this:

LAYER
    NAME "X"
    DATA users
    STATUS ON
    TYPE POINT
           CLASS
                     COLOR 255 0 0
                     SYMBOL 'circle'
                     SIZE 10
           END
END

What do i need to change to make it to display data in latitude longitude
format?

Thanks,

Jan