[mapserver-users] Projection question

[Ian Walberg]

I thought I understood how PROJECTION worked in map files....

 

The map file below renders the earth/countries outline and a rectangle
with the overall map projection set to init=epsg:4326 and EXTENT -180
-90 180 90.

 

However when I change the overall map projection to "proj=ortho" and
EXTENT -8000000 -8000000 8000000 8000000 I get a globe drawn the
rectangle has not been projected onto the globe.

 

I have various other layers with city names etc and all of these project
ok.

 

What have I misunderstood here?

 

Thanks

 

Ian

 

 

LAYER

  NAME "box"

  STATUS DEFAULT

  TYPE polygon

               

  FEATURE

    WKT "POLYGON ((180.0 0.0, -180.0 0.0, -180.0 90.0, 180.0 90.0, 180.0
0.0))"

  END

 

  CLASS

    STYLE 

      COLOR 0 0 100

    END

  END

    

   PROJECTION

    "init=epsg:4326"

   END

END

 

LAYER

  NAME world

  TYPE polygon

  DATA World_Countries.shp

  STATUS DEFAULT

 

  CLASS

    STYLE

      COLOR 50 128 50

            OUTLINECOLOR 10 10 10

     WIDTH 1

    END

  END

 

  PROJECTION

    "init=epsg:4326"

    END

  END

 

  PROJECTION

    "init=epsg:4326"

                        

#  "proj=ortho"

#  "lat_0=0.0"

#  "lon_0=-90.0"

  END

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