[mapserver-users] large # of GeoTiffs mapfile/index strategy

Mark Korver mwkorver at gmail.com
Fri Jun 27 11:57:14 PDT 2014


Hi Experts,
I need a little advice on how to do lots of aerial image GeoTiffs quickly.
I have a large region with many GeoTiffs covering 9 UTM zones. Typically I
would put together a map file with layers per utm zone and use shapefile
index to point at the GeoTiffs. I know that declaring the extent per layer
is important when you have a lot of layers. The GeoTiffs are RGB,
internally tiled, and jpeg compressed. They are also about 20-30MB in size.

My question is, has anyone done any testing between doing this via
shapefile index vs GDAL .vrt files? Which would perform faster?
My current setup is using Mapserver behind nginx in fastcgi mode.
Thanks for any help on this.
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