Thanks! I wasn't aware of that. Additionally I had to increase layer class maxscale parameter.
Sergey On Thu, Feb 24, 2011 at 10:33 PM, Jean-François Gigand < [email protected]> wrote: > Hi, > > Indeed. > > Also note that EPSG:900913 is the same as EPSG:3785 and EPSG:3857. > These three are the Spherical Mercator projection, which is the right > one to use for overlays on Google Maps. > > > Jean-François Gigand > > > > > 2011/2/24 Fawcett, David (MPCA) <[email protected]>: > > Sergey, > > > > > > > > If your data is in epsg:4326 and you want to publish the data as > epsg:3785, > > you will need to projection blocks to your layers. > > > > > > > > Something like: > > > > > > > > PROJECTION > > > > "init=epsg:4326" > > > > END > > > > The Projection block in the MAP section defines your output projection. > > Because your data is not in the same projection, you will need to define > a > > projection block in each layer section. Those projection blocks define > the > > ‘input’ projection. They tell MapServer what projection the data exists > > in. This allows MapServer (with proj4 support) to re-project your data > to > > the output projection. > > > > > > > > David. > > > > > > > > > > > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Sergey > Kraev > > Sent: Wednesday, February 23, 2011 5:01 AM > > To: [email protected] > > Subject: [mapserver-users] Spherical Mercator Projection Problem > > > > > > > > Hi, > > > > > > > > I’m running MS4W v3.0 (including MapServer 5.6.5) on Windows. > > > > > > > > My data source are PostGIS multipolygon countries’ borders. > > > > > > > > I have successfully got MapServer to render the world map in WGS84 > > projection using these settings: > > > > > > > > Request: > > > > > > > > > http://127.0.0.1:8080/cgi-bin/mapserv.exe?map=world.map&mode=map&mapsize=256+256&mapext=-180+-90+180+90 > > > > > > > > world.map: > > > > > > > > MAP > > > > EXTENT -180 -90 180 90 > > > > #EXTENT -20037508 -20037508 20037508 20037508 > > > > SIZE 256 256 > > > > IMAGECOLOR 153 179 204 > > > > FONTSET "c:\MS4W\fonts\fonts.list" > > > > RESOLUTION 96 > > > > MAXSIZE 5000 > > > > > > > > PROJECTION > > > > "init=epsg:4326" > > > > #"init=epsg:3785" > > > > END > > > > … > > > > <layers don’t have PROJECTION sections> > > > > > > > > I would like MapServer to render the same data into a “Web (spherical) > > Mercator” projected map (epsg:3785), but I don't know how to modify my > > request and mapfile in order to get the correct map. > > > > > > > > With the following settings I just receive a picture without any > polygons. > > > > > > > > \ms4w\proj\nad\epsg: > > > > > > > > … > > > > <3785> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 > > +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs <> > > > > … > > > > > > > > Request (only mapext is different): > > > > > > > > > http://127.0.0.1:8080/cgi-bin/mapserv.exe?map=world.map&mode=map&mapsize=256+256&mapext=-20037508+-20037508+20037508+20037508 > > > > > > > > world.map (only EXTENT and PROJECTION are different): > > > > > > > > MAP > > > > #EXTENT -180 -90 180 90 > > > > EXTENT -20037508 -20037508 20037508 20037508 > > > > SIZE 256 256 > > > > IMAGECOLOR 153 179 204 > > > > FONTSET "c:\MS4W\fonts\fonts.list" > > > > RESOLUTION 96 > > > > MAXSIZE 5000 > > > > > > > > PROJECTION > > > > #"init=epsg:4326" > > > > "init=epsg:3785" > > > > END > > > > … > > > > <layers don’t have PROJECTION sections> > > > > > > > > I’m assuming that -20037508 -20037508 20037508 20037508 is correct extent > > for the whole world map, since Google uses that and they also have > Mercator > > projection. > > > > > > > > Thanks for your help. > > > > > > > > Sergey > > > > > > > > _______________________________________________ > > mapserver-users mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/mapserver-users > > > > >
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