Has a set of standard queries been developed to make Tiger shapefiles
routable? It would need to eliminate gaps and ensure that all end nodes and
intersecting nodes corresponded with each other.
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I created a table of ST_ClosestPoint()s to polylines. I assumed that if the
closest points were on the line the queries below would give equal results,
but that's not happening.
"InsideWorking".simplified is a line.
"gaps".closeststartpoint is a point.
SELECT "gaps".closeststartpoint FR
I'd like to be able to detect all line loops that are not closed, but where
one end of the line loops around and terminates on another line (a lasso).
Querying a table containing several of these returns no ST_IsClosed=true, or
ST_IsValid=false, or ST_IsSimple=false. Ultimately, I'd like to spli
