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65 views

Maximum number of points in a linestring?

I have a database (in Postgres/PostGIS) of GPS points recorded all over a rail network. The only data available is the lat/long coords of each point (no timestamps, links between points, or anything ...
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60 views

Can I use Point as the geom type in pgrouting?

in my table i have the field geom(POINT, srid) and its populated, this table also have the source an target field witch is blank(just like pgrouting guide). I tried the function pgr_createTopology() ...
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488 views

how to find vertices for a geometry in OpenLayers

I am having a LineString, where I need to find the vertices logically and save those vertices. Can anyone help me out. Or else how below can help me. OpenLayers.Geometry.LineString = ...