The problem I'm encountering is simple. I have a shape file of points (about 8 million). They have three XY pairs that I am attempting to create XY lines from for purposes of measuring distance. ...
I am currently looking into online/cloud-based storage solutions in general and also for my GIS data which consists of shapefiles, rasters, file geodatabases, and the like (no relational databases). ...
I've been searching for a few days for the most accurate world coastline datasets.. Does anyone know where l can get coastlines at scales of 1:250 000, 1:2 000 000 and 1: 70 000. I've tried using the ...
Are there any efficient methods for processing ArcGIS-based database tables outside of the ArcEtc program library?
Let us say, for the sake of argument, that you are working with a table that is over 2 GB in size (so .dbf is automatically ruled out... right?). To even create such a document, ArcGIS requires that ...
I have a set of Sites in the thousands. Not all users see same the same Sites on the map - thus ACL. Data is stored in a non-GIS database (mssql, ora, etc) and right now is retrieved with a standard ...
I have a PostGIS query that will return several million rows: SELECT t1.id AS id1, t2.id AS id2, ABS(t1.mean_h - t2.mean_h) AS h_diff, ST_Distance(t1.the_geom, t2.the_geom) AS dist FROM ...