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<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 (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
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