Hi don't think to st_contains because SELECT line,point, ST_Line_Locate_Point(geom_line, geom_point)
give this otput: 7646;11764;0.0983820617751394 7646;11769;0.962087766284734 7646;11762;0.231570267802357 2013/10/28 Rémi Cura <[email protected]> > You may want to split not with point but with the projected point one line > (use http://postgis.refractions.net/docs/ST_ClosestPoint.html) > If it is not enough, you may want to translate all your geometries to > reduce the number of digits in coordinates. > Another possibility is to use ST_Snap to snap line to point (won't work > the other way) > > Cheers, > Rémi-C > > > 2013/10/28 Nicolas Ribot <[email protected]> > >> Hi, >> >> The points are not on the line, probably due to rounding errors. >> >> st_contains(line, point) returns false. >> >> Nicolas >> >> On 28 October 2013 18:07, franco base <[email protected]> wrote: >> > Hi. >> > I have a set of linestring and point on linestring. >> > I want cut the linestring on the point. >> > I can have n points for one linestring, >> > so I use ST_Split >> > (insted of ST_Line_Interpolate_Point and ST_Line_Substring) >> > but it doesn't work. >> > >> > line;geom_line;point;geom_point >> > >> 7646;"0102000020BB0B000006000000A4703D0A471F37412D211F04AF335341FAEDEBE0491F3741325530C2AE335341BD5296014F1F37418FC2F578AE3353414694F606521F3741D2DEE07BAE3353412D211F74541F37418FC2F578AE33534123B9FC675020374112143FF6BC335341";11764;"0101000020BB0B00005713362F611F37410D996234AF335341" >> > >> 7646;"0102000020BB0B000006000000A4703D0A471F37412D211F04AF335341FAEDEBE0491F3741325530C2AE335341BD5296014F1F37418FC2F578AE3353414694F606521F3741D2DEE07BAE3353412D211F74541F37418FC2F578AE33534123B9FC675020374112143FF6BC335341";11769;"0101000020BB0B00005EF0DD584620374139BF2762BC335341" >> > >> 7646;"0102000020BB0B000006000000A4703D0A471F37412D211F04AF335341FAEDEBE0491F3741325530C2AE335341BD5296014F1F37418FC2F578AE3353414694F606521F3741D2DEE07BAE3353412D211F74541F37418FC2F578AE33534123B9FC675020374112143FF6BC335341";11762;"0101000020BB0B0000A5CBC785841F374156A2A33CB1335341" >> > >> > ST_GeometryType(St_Split(geom_line, geom_point)) >> > give "ST_GeometryCollection" >> > >> > but >> > >> > (ST_Dump(ST_Split(geom_line, geom_point))).geom >> > >> > return only 3 linestring (one for record) and the geometry is egual to >> > geom_line >> > >> > >> > thanks. >> > >> > fb >> > >> > _______________________________________________ >> > postgis-users mailing list >> > [email protected] >> > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> _______________________________________________ >> postgis-users mailing list >> [email protected] >> http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >> > > > _______________________________________________ > postgis-users mailing list > [email protected] > http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users >
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