[Mapserver-users] Easy mapfile question

[Jim Buzbee]

I'm working on an application that starts with a whole-world raster 
image.  As the user pans and zooms in different areas, I want more 
detailed raster images to be displayed if they are available.

I currently have a single raster image referenced in my map file and it 
is working properly.  My question : How do I add additional rasters to 
the map file?

For example, say I have a raster map of the western US with extents of 
something like 34N, 114W to 35N, 112W. How do I reference this in my map 
file?  Here's my current map file :

MAP
   STATUS ON
   EXTENT -180 -90 180 90
   UNITS DD
   SIZE 640 320
   SHAPEPATH  "/usr/apache2/htdocs/maps/"

WEB
   TEMPLATE world.html
   IMAGEPATH "/usr/apache2/htdocs/tmp/"
   IMAGEURL "/tmp/"
END

   LAYER
     NAME world
     TYPE RASTER
     DATA world.tif
     STATUS DEFAULT
   END

END

Thanks!

Jim Buzbee


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