Large data sets

[Scott Phillips]

Hello Jose,

The map file documentation has a little information on using tiles for
shapefiles, but it doesn't mention that you can do the same thing for
tiles of raster data.  I tried it with a set of scanned topographic maps
(about 500 maps) and it worked fine.

What I did was set up an index shapefile of the map tiles.  I added a
field to this shape file called "LOCATION".  In that field, I put the
full path to the image tile, such as: "/data/gis/data/drg/files/o37121h8.tif"

In my map file, I added this entry:

layer
  name "drg"
  type raster
  status on
  offsite 2
  tileindex /data/gis/data/drg/tiles
  maxscale 24000
end

If you have ArcView files showing where the map tiles are, you can modify
this and use it for the tile index. 

Hope this helps,

Scott Phillips
scott at phillipsgis.com

> 
> Hello everybody,
> 
> Where can I find documentation about setting up large data sets (there is no
> link in the documentation page).
> 
> I am trying to set up access to topographical data in the 1:1,000,000 scale
> (and later 1:250,000) for all of Mexico using Mapserver, but if possible I will
> try to have several data sets (tiles), instead of a single big one.
> 
> Thanks,
> 
> Jose L. Ornelas de Anda
> DGG-INEGI
> Av Heroe de Nacozari Sur 2301
> 20290, Aguascalientes, Ags
> Mexico
> jornelas at antares.inegi.gob.mx
> 
>