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<p><span>Thank you Regina for your response. I mean, for example, I have a roads layer that has many attributes (width, pavement type, maximum speed, etc.). Without dynamic segmentation I must have a new segment every time an attribute changes its value; with
dynamic segmentation I don't need to do this. Regarding this I found the following: <a href="http://postgis.net/workshops/postgis-intro/linear_referencing.html" class="OWAAutoLink" id="LPlnk159056" previewremoved="true">http://postgis.net/workshops/postgis-intro/linear_referencing.html</a>.
But I would like to know if there is someone who had already used it so as to ask him or her about how that experience.</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>De:</b> Regina Obe <lr@pcorp.us><br>
<b>Enviado:</b> miércoles, 8 de mayo de 2024 11:56:04<br>
<b>Para:</b> SERGIO ACOSTAYLARA; postgis-users@lists.osgeo.org<br>
<b>Asunto:</b> RE: linear reference/dynamic segmentation</font>
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<p class="MsoNormal"><span style="font-size:11.0pt">Not sure what you mean by dynamic attributes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">If you need something to position points along a line, so that you can put an info tip on each point, they you’ll want to use<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><a href="https://postgis.net/docs/en/ST_LineInterpolatePoints.html">https://postgis.net/docs/en/ST_LineInterpolatePoints.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Something like below will give you a point every 20 percent along the linestring<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">SELECT dp.geom<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">From your_table, ST_DumpPoints(ST_LineInterpolatePoints(your_table.geom, 0.2, true)) AS dp<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> SERGIO ACOSTAYLARA <sergio.acostaylara@mtop.gub.uy>
<br>
<b>Sent:</b> Wednesday, May 8, 2024 9:21 AM<br>
<b>To:</b> postgis-users@lists.osgeo.org<br>
<b>Subject:</b> linear reference/dynamic segmentation<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black">Hi. Is there anybody in the list that has any experience using linear reference/dynamic segmentation with postgis? We need to show dynamic attributes in our geoportal/visualizer. Is this possible
to do it with postgis?<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Thanks in advance<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Sergio Acosta y Lara<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Departamento de Geomática<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Ministerio de Transporte y Obras Públicas<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">URUGUAY<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">(598)29157933 ints. 20329<o:p></o:p></span></p>
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