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<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D">Thanks Vicky,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D">I’ll try get the issue and node table posted on github next week.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D">The node that is causing the problem is the node at the end of a long stretch of road with no other nodes within the specified cost of ~650 seconds (I’m
working with travel time as cost). If I ignore the node then my function works fine. If I adjust the cost of the link in question then I can make it work too. But that’s enough for a Friday evening…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D">Have a good weekend and looking forward to 2.2.0<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D">Ross<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Pgrouting-users [mailto:pgrouting-users-bounces@lists.osgeo.org]
<b>On Behalf Of </b>Vicky Vergara<br>
<b>Sent:</b> 15 April 2016 16:28<br>
<b>To:</b> pgRouting users mailing list<br>
<b>Subject:</b> Re: [pgrouting-users] alphashape with less than 3 points crashing server process<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS"">Hello Ross:<br>
I wonder if you can post this issue in (while I start working on it)<br>
<a href="https://github.com/pgRouting/pgrouting/issues">https://github.com/pgRouting/pgrouting/issues</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS"">please also post the node table data sample that makes it crash.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS"">So that we can be able to reproduce the problem.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS"">I must say, that version 2.2 is to be announced this weekend so it will not be fixed in 2.2.0<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS"">But I'll see what I can do for a v2.2.1 patch.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Comic Sans MS"">Vicky<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Apr 15, 2016 at 9:03 AM, McDonaldR <<a href="mailto:McDonaldR@angus.gov.uk" target="_blank">McDonaldR@angus.gov.uk</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">Hello</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">I’ve got some SQL wrapped up in a function to calculate alphashapes for multiple input points. The input
points have all been assigned a “nearest_node” id and this is used in the SQL. The problem is where I have one point at the end of a long road and when I try to calculate an alphashape with a value that does not return 3 points to make a polygon it crashes
the server process. In PgAdmin I see the log has the following: </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">2016-04-15 14:40:15 BST LOG server process (PID 5044) was terminated by exception 0xC0000005
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">2016-04-15 14:40:15 BST LOG terminating any other active server processes
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">2016-04-15 14:40:15 BST WARNING terminating connection because of crash of another server process
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">So, I guess my question is, is there any way I can get my function to fail gracefully when I hit this exception
and stop my connection terminating and the process crashing?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">Postgres 9.2.15 64bit</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">PostGIS 2.2.1</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">pgRouting 2.1.0</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">Windows Server 2008 r2</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">My SQL (could probably be done better)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">CREATE TEMPORARY TABLE node AS</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT id,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ST_X(geometry) AS x,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ST_Y(geometry) AS y,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> geometry</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM (</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT source AS id,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ST_Startpoint(geometry) AS geometry</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM itn_network</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> UNION</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT target AS id,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ST_Startpoint(geometry) AS geometry</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM itn_network</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ) AS node;</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">SELECT ST_SetSRID(ST_MakePolygon(ST_AddPoint(foo.openline, ST_StartPoint(foo.openline))),27700) AS geometry</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM (</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT ST_Makeline(points ORDER BY id) AS openline</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM (</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT row_number() over() AS id, ST_MakePoint(x, y) AS points
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM pgr_alphashape('</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT *</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM node</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> JOIN</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> (SELECT * FROM pgr_drivingDistance(''</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> SELECT gid AS id,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> source::int4 AS source,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> target::int4 AS target,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> cost_time::float8 AS cost,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> rcost_time::float8 AS reverse_cost</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> FROM itn_network'',</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> 35819, --for this node</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> 700, --this fails when I set it to 600</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> true,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> true)) AS dd ON
<a href="http://node.id" target="_blank">node.id</a> = dd.id1'::text)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ) AS a</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> ) AS foo;</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">Thanks</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif"">Ross</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#4F6228">Ross McDonald
</span></b><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#4F6228">|<b>
</b>GIS Data Coordinator | Resources Department, IT Division | Angus Council, Angus House, Orchardbank Business Park, Forfar, DD8 1AT</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#4F6228">T:
<b>01307 476419</b> | F: 01307 476401 | E: <a href="mailto:mcdonaldr@angus.gov.uk" target="_blank">
<span style="color:#4F6228">mcdonaldr@angus.gov.uk</span></a> </span><o:p></o:p></p>
<p class="MsoNormal" align="center" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-align:center">
<span style="font-size:13.0pt;font-family:"Century Gothic","sans-serif";color:#4F6228"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
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<pre>Georepublic UG (haftungsbeschränkt)<o:p></o:p></pre>
<pre>Salzmannstraße 44, <o:p></o:p></pre>
<pre>81739 München, Germany<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Vicky Vergara<o:p></o:p></pre>
<pre>Operations Research<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>eMail: vicky@<a href="http://georepublic.de" target="_blank">georepublic.de</a><o:p></o:p></pre>
<pre>Web: <a href="https://georepublic.info" target="_blank">https://georepublic.info</a><o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Tel: +49 (089) 4161 7698-1<o:p></o:p></pre>
<pre>Fax: +49 (089) 4161 7698-9<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Commercial register: Amtsgericht München, HRB 181428<o:p></o:p></pre>
<pre>CEO: Daniel Kastl<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
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