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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,<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 got a new problem… how in PostGIS
could I perform the opposite of a cookie cutting operation? Better said, use a
polygon layer to cut a hole in a line layer thereby keeping the lines from
outside the polygons but not those inside. I’ve been trying with a
cooking cutting script (see below) by placing NOT before the operators but
without much luck.<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'>
cookie.gid,<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, 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'>
curvas_isla_not_02<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'>
roads AS 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'>
urban_areas AS 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 && 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, 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'>I’ve also tried to use the results from the
cookie cutter script to select those lines that don’t coincide with those
from the cookie (see below), but also without any luck.<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'>
roads.gid,<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'>
roads.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'>
roads_not_urban<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'>
roads,<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'>
roads_urban<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'>
roads.the_geom && roads_urban.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'>
NOT INTERSECTS(roads.the_geom, roads_urban.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'>If anybody’s got any tips on how to do this, or
advice on where I’m going wrong….!<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'>Many thanks,<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 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'> <o:p></o:p></span></font></p>
<table class=MsoNormalTable border=0 cellpadding=0 align=left width="100%"
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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 lang=EN-GB style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<td colspan=2 style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<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'>Matt
Doughty</span></font><o:p></o:p></p>
</td>
<td rowspan=5 valign=top 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'><img width=90
height=100 id="_x0000_i1026" src="cid:image001.jpg@01C7A6A7.7874AC90"><o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<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'>GEOGRAMA
S.L.</span></font><font face=Arial><span style='font-family:Arial'><o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<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>
</td>
</tr>
<tr>
<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'>Fax:
+34 945 23 03 40 </span></font><font face=Arial><span style='font-family:
Arial'><o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<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>
</td>
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<tr>
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<p class=MsoNormal style='mso-element:frame'><font size=3
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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>
<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>
<table class=MsoNormalTable border=0 cellpadding=0 align=left width="100%"
bgcolor=white style='width:100.0%;background:white'>
<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>
</td>
</tr>
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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>
</td>
</tr>
<tr>
<td 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>
</td>
<td rowspan=5 valign=top 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>
</td>
</tr>
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<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3 face=Arial><span
style='font-size:12.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
</td>
</tr>
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<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3 face=Arial><span
style='font-size:12.0pt;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 face=Arial><span
style='font-size:12.0pt;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 face=Arial><span
style='font-size:12.0pt;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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