Google maps projections..

[Dave Brown]

Is there a quick way to convert the EXTENT figures ?   

The extencts at the moments are basically the whole world in lat/longs..

EXTENT         -179.999169 -89.901447 181.795516 84.929365

I got those figures from  using OGRINFO on the world boundaries file from
mapinfo.

Thanks,

Dave.

-----Original Message-----
From: Steve Young [mailto:steve at sierraclub.bc.ca] 
Sent: 07 November 2005 22:04
To: Dave Brown; MAPSERVER-USERS at LISTS.UMN.EDU
Subject: RE: [UMN_MAPSERVER-USERS] Google maps projections..

Hi Dave,

Did you remember to change the EXTENT in your map file? It needs to be in
metres for Mercator. 

Steve 

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Dave Brown
Sent: Monday, November 07, 2005 9:29 AM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Google maps projections..

Tried using that projection in the top MAP section of the .MAP file, then
put PROJECTION  "AUTO" 
END
In each layer section, strangely now the maps don't show anything.  
When I don't specify any map projection settings, I get it to show in rougly
the correct position just slightly warped..  As soon as I start trying to
change the projections I get nothing.  Sadly I was hoping it was going to be
quite straightforward this problem... :(




-----Original Message-----
From: John Hagstrand [mailto:john.hagstrand at INTERAGERESEARCH.COM]
Sent: 07 November 2005 07:07
To: MAPSERVER-USERS at LISTS.UMN.EDU; Dave Brown
Subject: Re: Google maps projections..

Hi Dave,

The list provided me with this projection info a couple weeks ago.  I am
using it successfully to draw mapserv images which overlay on top of Google
maps.

  PROJECTION
    "proj=merc"
    "lat_ts=0.0"
    "lon_0=-90.0"
    "x_0=0.0"
    "y_0=0.0"
    "ellps=GRS80"
    "no_defs"
  END

John

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