Raster DEMs and MapServer

[Tyler Mitchell]

Travis,
I'd highly recommend keeping your data in GeoTIFF format.  There are ways to optimise the display in MapServer for TIFF imagery.  I find that the overhead involved with decompression some compressed formats, isn't worth it.  If you have lots of drive space, stick with TIFF.

I can't speak to the querying ability.  I don't know the status of it in MapServer at present, but I remember some talk about it.

Good luck.
Tyler

----- Original Message -----
From: Travis Kirstine GIS Tech <tkirstine at JDBARNES.COM>
Date: Friday, May 6, 2005 2:05 pm
Subject: [UMN_MAPSERVER-USERS] Raster DEMs and MapServer

> I was hoping someone could provide me with some basic info
> regarding raster
> dataset. I want to display a regional DEM covering approximatly
> 270000 sq km
> with the ability to allow the user to query the elevation in
> Mapserver.What raster format would be the best allowing me to
> retain the elevation
> data but also provide maximum drawing speed.  I haven't yet
> created the
> dem's (I'll be using ESRI's Spatial Analyst and 3d Analyst)and
> don't want to
> waste time producing a product that is useless.
> Thanks for your time
> Travis Kirstine
>