Returns a point interpolated along an ST_Geometry type that represents an ST_LineString or GeoSequence value, given a proportional distance along that line.
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Argument … |
Specifies … |
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proportion |
a FLOAT value between 0 and 1 that represents the fraction of the total 2-dimensional length of the ST_LineString where the point must be located. |
Returns an ST_Point value.
ST_LineString and GeoSequence
SELECT streetShape.ST_Line_Interpolate_Point(3E-1)
FROM sample_streets
WHERE skey = 1331;