[postgis-users] LinearReferencing: measure vertex of linestring?

Andrés Maneiro amaneiro at icarto.es
Wed Mar 28 10:26:36 PDT 2012

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.


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