Wondering how would i go about getting this to work.
I have a table with location data (lat, long, homevalue) in sql server 2008. Given a lat long say (32.113, -81.3225), i want to draw a 50 mile radius circle and get the number of locations and total home value within the circle buffer.
Thanks
vic
Mapoholic,
Thanks for your reply. If i understand you correctly, you are using the "shape" as an attribute to perform stintersect and stbuffer on the location table. My limitations are that, i have the location table which has just the lat, long, homevalue in dollars. I need to independently draw a cirlce based on the given lat long, which if i am doing it right would be like this
DECLARE @Result geography
SELECT @Result = geography::Point(32.113, -81.3225,4326);
select @Result.STBuffer(10000);
and then i need to JOIN or use some method to check if the lat longs in the location table are within the @Result.STBuffer(10000). Any ideas?
Thanks again
vic
Best Answer
STBuffer and STIntersects are the functions you want I think. This is an example of getting the location records within a 10m buffer around the point:
Where 4326 is the SRID (assuming the data is in WGS84) and 'shape' is the name of the spatial column