[postgis-users] How do you use PostGIS Raster?

[Bryce L Nordgren]

I'm not using PostGIS raster yet. We've been using PostGIS for years to 
keep track of active fire and burn scar detections from the MODIS 
instruments on board the Aqua and Terra satellites. Part of our process is 
to resample the point detections onto a grid which aggregates burned area 
over the course of a fire season. Aggregating onto a grid has been 
performed using an external program, but we'd like to be able to use 
PostGIS raster.

More recently, we're comparing a vector fire perimeter from the MODIS 
instrument  to a higher resolution Landsat image of the area. We select 
the areas of the Landsat raster which are inside the perimeter vs. outside 
the perimeter and calculate histograms on the separate image regions. 
Currently, we're using ENVI and IDL to do this more or less manually. We'd 
like to be able to perform this inside PostGIS, as PostGIS is the source 
of the vector data anyway.

Bryce
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