I guess the best way to do this is to combine the actual line and a "virtual" line, probably a view, with "measured" points.
This involves a bit of thinking but it might be possible. George On Wed, Mar 28, 2012 at 3:03 PM, Stephen Woodbridge <wood...@swoodbridge.com > wrote: > On 3/28/2012 1:26 PM, Andrés Maneiro wrote: > >> On 28/03/12 18:26, Sandro Santilli wrote: >> >>> On Wed, Mar 28, 2012 at 06:22:28PM +0200, Andrés Maneiro wrote: >>> >>> LINESTRINGM(1 0 1,2 0 2,4 0 4) >>>> >>> >> Oh, I get it. And there is a native way in postgis to calibrate the line >> from a given set of measured points instead of using the ends? >> >> -- >> >> If I understand it correctly I could: >> >> 1) mylinestringm = ST_AddMeasure(mylinestring, measure_start, >> measure_end); >> 2) Add the given set of points to mylinestringm with ST_AddPoint >> 3) Using ST_SetPoint to move the original vertexes. >> >> Is that correct? I'm very interested to know if there is a more direct >> and proper way to create a route from a set of points. >> > > ST_MakeLine [1] can be used to aggregate a sequence of points into a line. > > [1] > http://www.postgis.org/**documentation/manual-1.5/ST_**MakeLine.html<http://www.postgis.org/documentation/manual-1.5/ST_MakeLine.html> > > ______________________________**_________________ > postgis-users mailing list > postgis-users@postgis.**refractions.net<postgis-users@postgis.refractions.net> > http://postgis.refractions.**net/mailman/listinfo/postgis-**users<http://postgis.refractions.net/mailman/listinfo/postgis-users> > -- George R. C. Silva Desenvolvimento em GIS http://geoprocessamento.net http://blog.geoprocessamento.net
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