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SUPPORT_LATLON | SUPPORT_EDGEFLAGS the default constructor sets SUPPORT_LATLON only. Other constructors must set the combination explicitly. The code above is a binary operation with Or-Op "|"


Ok, so I figured it out. It was a two part problem. First, using the source of the start node IS the correct way to produce a matchup. Second, my left join at the end was joining to id1 instead of id2 produced by the pgr_drivingDistance function. That caused it to relate to the wrong entities, producing the results in a different part of the country. As ...

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