[Mapserver-users] projection problem

[Daniel Morissette]

... and don't forget to change the UNITS value from DD to meters or
whatever your projections units are so that your scalebar and
MINSCALE/MAXSCALE settings work properly.

Daniel


Ed McNierney wrote:
> 
> Frauke -
> 
> When you change the projection to Gauß-Krüger, you must change the EXTENT statement to represent coordinates in that projected coordinate system.  The values in the EXTENT statement are always coordinates in the MAP file's PROJECTION.
> 
>         - Ed
> 
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA  01863
> ed at topozone.com
> (978) 251-4242
> 
> -----Original Message-----
> From: frauke.trurnit at gmx.de [mailto:frauke.trurnit at gmx.de]
> Sent: Tuesday, March 11, 2003 2:48 AM
> To: mapserver-users at lists.gis.umn.edu
> Cc: arnulf.christl at ccgis.de; stepan.kafka at centrum.cz
> Subject: Re: [Mapserver-users] projection problem
> 
> Hi Anrulf, hi Stepan,
> 
> If I use Gauß-Krüger (init=EPSG:31493), no more map appears.
> 
> Frauke
> 
> NAME 'Bundestagswahlkreise 2002'
> STATUS ON
> EXTENT 5.24 47.29 15.33 55.33
> UNITS dd
> 
> PROJECTION
>     'init=epsg:31493'
> END
> ...
> LAYER
>   NAME 'Bundestagswahlkreise 2002'
>   TYPE POLYGON
>   STATUS ON
>   DATA 'wahlkreise2002'
>   PROJECTION
>     'init=epsg:4326'
>   END
>   CLASSITEM 'Name'
>   CLASS
>     NAME 'Wahlkreise'
>     EXPRESSION /./
>     OUTLINECOLOR 128 128 128
>     COLOR 255 255 0
>     TEMPLATE 'wahlkreise.html'
>   END
> END
> 
> > Hi,
> > the map looks correct - just like specified with 4326 which ist "ETRS89".
> > If
> > you want to have it look like we are used to in Germany you have to
> > project
> > it in Gauß-Krüger or similar.
> >
> > Regards, Arnulf.
> >
> > MAP
> >   NAME "Germany"
> >   STATUS ON
> >   #EXTENT 5.88 46.6213 15 55.7187
> >         EXTENT 2886610 5230448 4285190 6130010 #5.88 46.6213 15 55.7187
> >         PROJECTION
> >                         "init=EPSG:31493"     # projection of the whole
> > project
> >   END
> > ....
> >
> >   LAYER
> >     NAME "Topographie"
> >     STATUS ON
> >     DATA "d:/umn/data/hynet_polygon.shp"
> >     TYPE POLYGON
> >                 TEMPLATE "templates/query.html"
> >                 HEADER "templates/query_header.html"
> >                 FOOTER "templates/query_footer.html"
> >     TOLERANCE 20
> >     TOLERANCEUNITS PIXELS
> >                 PROJECTION
> >       "init=EPSG:4326"     # projection of the data
> >     END
> >     CLASSITEM "HYPYTYPE"
> >     UNITS METERS
> >     SIZEUNITS PIXELS
> >
> >
> 
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-- 
------------------------------------------------------------
 Daniel Morissette               morissette at dmsolutions.ca
 DM Solutions Group              http://www.dmsolutions.ca/
------------------------------------------------------------