Hi there,

I am writing to check how to perform SNAP and DISSOLVE function by PostGIS.

I have a point dataset table and a MultipleLineString dataset table. I need
to snap all the points in the dataset to the Line Strings when the distance
is within 100 meters.

I also need union some polygon features and dissolve the polygons within a
polygon.

Any inputs would be appreciated.

-- 
Sincerely,


John Zhang,   M.Sc., B.Sc., A.Dipl.T.
email:   [EMAIL PROTECTED]
Phone:  604-998-1874

URL:  http://ca.geocities.com/john_z04/JOHN_ZHANG_GIS.html
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