Hello All,

I am working on a project where we need to be able to query a raster image (i.e. GeoTiff) to obtain elevation information. Basically, I need to be able to import a rather large data set and be able to query it on demand and export just the data I need at the time back into a raster format for further processing (very similar to the USGS Seamless Data server).

I am thinking importing the raster data as individual points (x,y,z) in the EWKT format is probably my best bet.

I am not totally sure I am on the right track here, so I am hoping someone can let me know if I am going down the right track or nudge me back onto it. So I just have a few basic questions:


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