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<p class="MsoNormal"><span lang="EN-US">Hi, I have a problem with MultiLinestrings/Linestrings.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have one layer with Linestrings which I would like to split in the intersections of a polygon (MultiPolygon) in a polygon layer.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I tried this:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">UPDATE public."linelayer" b <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> SET the_geom = ST_Intersection(b.the_geom, p.the_geom)
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> FROM public."polygonlayer" p <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> WHERE ST_Intersects(b.the_geom, p.the_geom)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m getting this error:</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white"> ERROR: Geometry type (MultiLineString) does not match column type (LineString) SQL state: 22023<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white">Then I tried to make the Linsestrings to MultiLinestrings, before splitting the lines:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ALTER TABLE public."linelayer" ALTER COLUMN "the_geom" TYPE geometry(MultiLinestring,"32633") USING ST_Multi("the_geom")<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And tried to split the lines again with the first expression, but gets this opposite error instead:
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white">ERROR: FEL: Geometry type (LineString) does not match column type (MultiLineString) SQL state: 22023<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white">What is it that I missed with MultiLinestring/Linestring?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white">What the heck can I do, seems like “Moment 22”?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#222222;background:white">Paul<br>
<br>
</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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