[GRASS-user] SQL Queries

Slover, Kevin kslover at Dewberry.com
Thu Jul 27 17:09:18 EDT 2006


Ok, looking for a SQL guru out there...

 

Want to see if something is even possible or not using GRASS (using 5.4)

 

Here is the situation... I have 2 files, once containing xyz pts, and
another containing polygons.  I am wondering if there is a way to use a
sql query to find the average elevation for a given polygon?

 

I am trying right now to use MapInfo to do this query, but it doesn't
like the amount of points I am query (> 1,500,000) and knowing that
GRASS is much better at processing and dealing with larger files,
wondered if a query like this is possible..

 

Any ideas??

 

Thanks in advance!

Cheers!

 

Kevin Slover

Coastal / GIS Specialist

2872 Woodcock Blvd Suite 230

Atlanta GA 30341

(P) 678-530-0022

(F) 678-530-0044

 

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