[postgis-devel] line_locate_prevertex(linestring geometry, locationfraction float8)

[David William Bitner]

How difficult would it be to implement line_locate_prevertex(linestring
geometry, locationfraction float8)
and
line_locate_postvertex(linestring geometry, locationfraction float8)
that would return the vertex along a line "at or before" / "at or after" a
fraction along a line?

Is there existing information in the line_interpolate_point() implementation
that is essentially throwing this information away?

David

-- 
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David William Bitner
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