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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Hi all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I’m having some problems with the intersection
function that I’ve been trying to use as a Cookie cutter command.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I’ve been executing the following script:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>SELECT <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
INTERSECTION(<cookie>.the_geom, <cookie-cutter>.the_geom) AS
the_geom<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>INTO<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
<output><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>FROM <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
<cookie>, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
<cookie-cutter><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>WHERE <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
<cookie>.the_geom && <cookie-cutter>.the_geom<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>AND <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
intersects(<cookie>.the_geom, <cookie-cutter>.the_geom);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>The problem it gives me is that polygons which need
to be cut don’t turn out right. The output retuns to the geometry column
a GeometryCollection for the polygon in question. This is composed of one
polygon, which is what I want, and a collection of linestrings, each of which
represents a segment of the boundary of the cutting polygon, which obviously I
don’t want.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Has anybody come across this and how can I solve the
problem?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Cheers,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Matt<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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<td colspan=2 style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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<tr>
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<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal style='mso-element:frame'><font size=3 color="#2e3a75"
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:#2E3A75'>Matt
Doughty</span></font><o:p></o:p></p>
</td>
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<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><img width=90
height=100 id="_x0000_i1025" src="cid:image001.jpg@01C82C16.C6D01F10"><o:p></o:p></span></font></p>
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<p class=MsoNormal style='mso-element:frame'><font size=3 color="#2e3a75"
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:#2E3A75'>GEOGRAMA
S.L.</span></font><font face=Arial><span style='font-family:Arial'><o:p></o:p></span></font></p>
</td>
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<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3 color="#2e3a75"
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:#2E3A75'>Tel.:
+34 945 13 13 72 652 77 14 15</span></font><font face=Arial><span
style='font-family:Arial'><o:p></o:p></span></font></p>
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<p class=MsoNormal style='mso-element:frame'><font size=3 color="#2e3a75"
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:#2E3A75'>Fax:
+34 945 23 03 40 </span></font><font face=Arial><span style='font-family:
Arial'><o:p></o:p></span></font></p>
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<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3 color="#2e3a75"
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:#2E3A75'>www.geograma.com</span></font><font
face=Arial><span style='font-family:Arial'><o:p></o:p></span></font></p>
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<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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