<div dir="ltr">Looking at the source code for function <span style="color:rgb(121,93,163);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:12px;line-height:16.8px;white-space:pre">_pgr_pointToId()</span><span style="color:rgb(121,93,163);line-height:16.8px;white-space:pre"><font face="arial, helvetica, sans-serif"> led me to try the following snippets on edge_table:</font></span><div><span style="color:rgb(121,93,163);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;line-height:16.8px;white-space:pre"><br></span></div><div><font color="#795da3" face="monospace, monospace" size="1"><span style="line-height:16.8px;white-space:pre">pgr_test=# select st_distance(the_geom, st_geomfromtext('point(1.9999999999 3.5)', 4326)) as d from edge_table where st_dwithin(st_geomfromtext('point(1.9999999999 3.5)'
, 4326), the_geom, 0.001) order by d;
d
-----------------------
0
1.00000008274037e-010
(2 rows)
pgr_test=# select st_distance(the_geom, st_geomfromtext('point(1.9999999999 3.5)', 4326)) as d from edge_table where st_dwithin(st_geomfromtext('point(1.9999999999 3.5)'
, 4326), the_geom, 0.001) order by d limit 1;
d
---
0
(1 row)</span></font><span style="color:rgb(121,93,163);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;line-height:16.8px;white-space:pre">
</span></div><div><span style="color:rgb(121,93,163);line-height:16.8px;white-space:pre"><font face="arial, helvetica, sans-serif"><br></font></span></div><div><span style="color:rgb(121,93,163);line-height:16.8px;white-space:pre"><font face="arial, helvetica, sans-serif">The first row is the "self geometry" to which the point belongs. However, in _pgr_pointToId() there is a "ORDER BY d LIMIT 1", which would have pick up only</font></span></div><div><span style="color:rgb(121,93,163);line-height:16.8px;white-space:pre"><font face="arial, helvetica, sans-serif">the self geometry and miss the intended one. Could this be the problem? Perhaps there should be a DESC?</font></span></div><div><span style="color:rgb(121,93,163);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;line-height:16.8px;white-space:pre"><br></span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 14 May 2016 at 00:12, <span dir="ltr"><<a href="mailto:pgrouting-users-request@lists.osgeo.org" target="_blank">pgrouting-users-request@lists.osgeo.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send Pgrouting-users mailing list submissions to<br>
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Today's Topics:<br>
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1. Re: Pgrouting-users Digest, Vol 92, Issue 2 (HuanChun Ye)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Sat, 14 May 2016 00:12:15 -0700<br>
From: HuanChun Ye <<a href="mailto:huanchunye@athentek.com">huanchunye@athentek.com</a>><br>
To: <a href="mailto:pgrouting-users@lists.osgeo.org">pgrouting-users@lists.osgeo.org</a><br>
Subject: Re: [pgrouting-users] Pgrouting-users Digest, Vol 92, Issue 2<br>
Message-ID:<br>
<CADxKYiSvdNhjKveK1Etj2AY79EAMbbEir=qy9Cmo_aKnPQ=<a href="mailto:qOQ@mail.gmail.com">qOQ@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi Regina,<br>
<br>
Thanks for your quick response! I upgraded to 2.2.2 using stack builder<br>
with the following results:<br>
<br>
<br>
pgr_sample=# select version(), postgis_full_version(), pgr_version();<br>
version |<br>
<br>
postgis_full_version<br>
|<br>
pgr_version<br>
-------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------<br>
--------------------------------------------------------+-----------------------------------------------<br>
PostgreSQL 9.5.2, compiled by Visual C++ build 1800, 64-bit |<br>
POSTGIS="2.2.2 r14797" GEOS="3.5.0-CAPI-1.9.0 r4090" PROJ="Rel. 4.9.1, 04<br>
March 2015" GDAL="GDAL 2.0.2, re<br>
leased 2016/01/26" LIBXML="2.7.8" LIBJSON="0.12" RASTER |<br>
(2.2.2,pgrouting-2.2.2,544044b,master,1.59.0)<br>
(1 row)<br>
<br>
<br>
But unfortunately the same commands still produce the same results.<br>
<br>
Huanchun<br>
<br>
<br>
On 13 May 2016 at 22:24, <<a href="mailto:pgrouting-users-request@lists.osgeo.org">pgrouting-users-request@lists.osgeo.org</a>> wrote:<br>
<br>
> Send Pgrouting-users mailing list submissions to<br>
> <a href="mailto:pgrouting-users@lists.osgeo.org">pgrouting-users@lists.osgeo.org</a><br>
><br>
> To subscribe or unsubscribe via the World Wide Web, visit<br>
> <a href="http://lists.osgeo.org/mailman/listinfo/pgrouting-users" rel="noreferrer" target="_blank">http://lists.osgeo.org/mailman/listinfo/pgrouting-users</a><br>
> or, via email, send a message with subject or body 'help' to<br>
> <a href="mailto:pgrouting-users-request@lists.osgeo.org">pgrouting-users-request@lists.osgeo.org</a><br>
><br>
> You can reach the person managing the list at<br>
> <a href="mailto:pgrouting-users-owner@lists.osgeo.org">pgrouting-users-owner@lists.osgeo.org</a><br>
><br>
> When replying, please edit your Subject line so it is more specific<br>
> than "Re: Contents of Pgrouting-users digest..."<br>
><br>
><br>
> Today's Topics:<br>
><br>
> 1. Re: Problem with topology using sample data in the manual<br>
> (Regina Obe)<br>
><br>
><br>
> ----------------------------------------------------------------------<br>
><br>
> Message: 1<br>
> Date: Sat, 14 May 2016 00:24:18 -0400<br>
> From: "Regina Obe" <<a href="mailto:lr@pcorp.us">lr@pcorp.us</a>><br>
> To: "'pgRouting users mailing list'" <<a href="mailto:pgrouting-users@lists.osgeo.org">pgrouting-users@lists.osgeo.org</a>><br>
> Subject: Re: [pgrouting-users] Problem with topology using sample data<br>
> in the manual<br>
> Message-ID: <000001d1ad98$7b662120$72326360$@<a href="http://pcorp.us" rel="noreferrer" target="_blank">pcorp.us</a>><br>
> Content-Type: text/plain; charset="utf-8"<br>
><br>
> Quick note.<br>
><br>
><br>
><br>
> There were some issues in pgRouting 2.2.0 released which this may be one<br>
> of them. I pushed up pgRouting 2.2.2 in stackbuilder last week for<br>
> PostgreSQL 9.5 x windows 64-bit<br>
><br>
><br>
><br>
> If you reinstall PostGIS bundle from stackbuilder and then do a<br>
><br>
><br>
><br>
> ALTER EXTENSION pgRouting UPDATE;<br>
><br>
><br>
><br>
> You should get the new version.<br>
><br>
><br>
><br>
> For others on windows, sorry haven't had a chance to repackage. I do have<br>
> binaries you can get from here - <a href="http://postgis.net/windows_downloads/" rel="noreferrer" target="_blank">http://postgis.net/windows_downloads/</a><br>
><br>
><br>
><br>
> In the unreleased section – look for in respective pg version folder<br>
><br>
><br>
><br>
> pgrouting-pg95-binaries-2.2.2w64gcc48.zip <<br>
> <a href="http://winnie.postgis.net/download/windows/pg95/buildbot/pgrouting-pg95-binaries-2.2.2w64gcc48.zip" rel="noreferrer" target="_blank">http://winnie.postgis.net/download/windows/pg95/buildbot/pgrouting-pg95-binaries-2.2.2w64gcc48.zip</a><br>
> ><br>
><br>
><br>
><br>
><br>
><br>
> Where the 95, w64 will change depending on which version of PostgreSQL you<br>
> are running.<br>
><br>
><br>
><br>
> These will be the same versions I'll be pushing up.<br>
><br>
><br>
><br>
><br>
><br>
> Thanks,<br>
><br>
> Regina<br>
><br>
> From: Pgrouting-users [mailto:<a href="mailto:pgrouting-users-bounces@lists.osgeo.org">pgrouting-users-bounces@lists.osgeo.org</a>] On<br>
> Behalf Of HuanChun Ye<br>
> Sent: Friday, May 13, 2016 11:57 PM<br>
> To: <a href="mailto:pgrouting-users@lists.osgeo.org">pgrouting-users@lists.osgeo.org</a><br>
> Subject: [pgrouting-users] Problem with topology using sample data in the<br>
> manual<br>
><br>
><br>
><br>
> I am working through the examples in the manual (v2.2) using the sample<br>
> data, but encountered a problem with topology, as described below. I<br>
> apologize for the verbosity, but I want to show the exact steps leading to<br>
> the problem, starting with just after importing the sample data:<br>
><br>
><br>
><br>
> pgr_sample=# select * from edge_table;<br>
><br>
> id | dir | source | target | cost | reverse_cost | x1 | y1 | x2<br>
> | y2 | the_geom<br>
><br>
><br>
><br>
><br>
> ----+-----+--------+--------+------+--------------+-----+-----+----------------+-----+-----------------------------------------------------------------------------------<br>
><br>
> -<br>
><br>
> 1 | B | | | 1 | 1 | 2 | 0 |<br>
> 2 | 1 |<br>
> 010200000002000000000000000000004000000000000000000000000000000040000000000000F03F<br>
><br>
> 2 | TF | | | -1 | 1 | 2 | 1 |<br>
> 3 | 1 |<br>
> 0102000000020000000000000000000040000000000000F03F0000000000000840000000000000F03F<br>
><br>
> 3 | TF | | | -1 | 1 | 3 | 1 |<br>
> 4 | 1 |<br>
> 0102000000020000000000000000000840000000000000F03F0000000000001040000000000000F03F<br>
><br>
> 4 | B | | | 1 | 1 | 2 | 1 |<br>
> 2 | 2 |<br>
> 0102000000020000000000000000000040000000000000F03F00000000000000400000000000000040<br>
><br>
> 5 | FT | | | 1 | -1 | 3 | 1 |<br>
> 3 | 2 |<br>
> 0102000000020000000000000000000840000000000000F03F00000000000008400000000000000040<br>
><br>
> 6 | B | | | 1 | 1 | 0 | 2 |<br>
> 1 | 2 |<br>
> 01020000000200000000000000000000000000000000000040000000000000F03F0000000000000040<br>
><br>
> 7 | B | | | 1 | 1 | 1 | 2 |<br>
> 2 | 2 |<br>
> 010200000002000000000000000000F03F000000000000004000000000000000400000000000000040<br>
><br>
> 8 | B | | | 1 | 1 | 2 | 2 |<br>
> 3 | 2 |<br>
> 0102000000020000000000000000000040000000000000004000000000000008400000000000000040<br>
><br>
> 9 | B | | | 1 | 1 | 3 | 2 |<br>
> 4 | 2 |<br>
> 0102000000020000000000000000000840000000000000004000000000000010400000000000000040<br>
><br>
> 10 | B | | | 1 | 1 | 2 | 2 |<br>
> 2 | 3 |<br>
> 0102000000020000000000000000000040000000000000004000000000000000400000000000000840<br>
><br>
> 11 | FT | | | 1 | -1 | 3 | 2 |<br>
> 3 | 3 |<br>
> 0102000000020000000000000000000840000000000000004000000000000008400000000000000840<br>
><br>
> 12 | FT | | | 1 | -1 | 2 | 3 |<br>
> 3 | 3 |<br>
> 0102000000020000000000000000000040000000000000084000000000000008400000000000000840<br>
><br>
> 13 | FT | | | 1 | -1 | 3 | 3 |<br>
> 4 | 3 |<br>
> 0102000000020000000000000000000840000000000000084000000000000010400000000000000840<br>
><br>
> 14 | B | | | 1 | 1 | 2 | 3 |<br>
> 2 | 4 |<br>
> 0102000000020000000000000000000040000000000000084000000000000000400000000000001040<br>
><br>
> 15 | B | | | 1 | 1 | 4 | 2 |<br>
> 4 | 3 |<br>
> 0102000000020000000000000000001040000000000000004000000000000010400000000000000840<br>
><br>
> 16 | B | | | 1 | 1 | 4 | 1 |<br>
> 4 | 2 |<br>
> 0102000000020000000000000000001040000000000000F03F00000000000010400000000000000040<br>
><br>
> 17 | B | | | 1 | 1 | 0.5 | 3.5 |<br>
> 1.999999999999 | 3.5 |<br>
> 010200000002000000000000000000E03F0000000000000C4068EEFFFFFFFFFF3F0000000000000C40<br>
><br>
> 18 | B | | | 1 | 1 | 3.5 | 2.3 |<br>
> 3.5 | 4 |<br>
> 0102000000020000000000000000000C4066666666666602400000000000000C400000000000001040<br>
><br>
> (18 rows)<br>
><br>
><br>
><br>
><br>
><br>
> pgr_sample=# select pgr_createTopology('edge_table', 0.001);<br>
><br>
> NOTICE: PROCESSING:<br>
><br>
> NOTICE: pgr_createTopology('edge_table', 0.001, 'the_geom', 'id',<br>
> 'source', 'target', rows_where := 'true', clean := f)<br>
><br>
> NOTICE: Performing checks, please wait .....<br>
><br>
> NOTICE: Creating Topology, Please wait...<br>
><br>
> NOTICE: -------------> TOPOLOGY CREATED FOR 18 edges<br>
><br>
> NOTICE: Rows with NULL geometry or NULL id: 0<br>
><br>
> NOTICE: Vertices table for table public.edge_table is:<br>
> public.edge_table_vertices_pgr<br>
><br>
> NOTICE: ----------------------------------------------<br>
><br>
> pgr_createtopology<br>
><br>
> --------------------<br>
><br>
> OK<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
><br>
><br>
> pgr_sample=# select pgr_analyzeGraph('edge_table', 0.001);<br>
><br>
> NOTICE: PROCESSING:<br>
><br>
> NOTICE:<br>
> pgr_analyzeGraph('edge_table',0.001,'the_geom','id','source','target','true')<br>
><br>
> NOTICE: Performing checks, please wait ...<br>
><br>
> NOTICE: Analyzing for dead ends. Please wait...<br>
><br>
> NOTICE: Analyzing for gaps. Please wait...<br>
><br>
> NOTICE: Analyzing for isolated edges. Please wait...<br>
><br>
> NOTICE: Analyzing for ring geometries. Please wait...<br>
><br>
> NOTICE: Analyzing for intersections. Please wait...<br>
><br>
> NOTICE: ANALYSIS RESULTS FOR SELECTED EDGES:<br>
><br>
> NOTICE: Isolated segments: 2<br>
><br>
> NOTICE: Dead ends: 7<br>
><br>
> NOTICE: Potential gaps found near dead ends: 1<br>
><br>
> NOTICE: Intersections detected: 1<br>
><br>
> NOTICE: Ring geometries: 0<br>
><br>
> pgr_analyzegraph<br>
><br>
> ------------------<br>
><br>
> OK<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
><br>
><br>
> pgr_sample=# select pgr_nodeNetwork('edge_table', 0.001);<br>
><br>
> NOTICE: PROCESSING:<br>
><br>
> NOTICE: pgr_nodeNetwork('edge_table', 0.001, 'id', 'the_geom', 'noded',<br>
> '<NULL>', f)<br>
><br>
> NOTICE: Performing checks, please wait .....<br>
><br>
> NOTICE: Processing, please wait .....<br>
><br>
> NOTICE: Splitted Edges: 2<br>
><br>
> NOTICE: Untouched Edges: 16<br>
><br>
> NOTICE: Total original Edges: 18<br>
><br>
> NOTICE: Edges generated: 4<br>
><br>
> NOTICE: Untouched Edges: 16<br>
><br>
> NOTICE: Total New segments: 20<br>
><br>
> NOTICE: New Table: public.edge_table_noded<br>
><br>
> NOTICE: ----------------------------------<br>
><br>
> pgr_nodenetwork<br>
><br>
> -----------------<br>
><br>
> OK<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
><br>
><br>
> pgr_sample=# select pgr_createTopology('edge_table_noded', 0.001);<br>
><br>
> NOTICE: PROCESSING:<br>
><br>
> NOTICE: pgr_createTopology('edge_table_noded', 0.001, 'the_geom', 'id',<br>
> 'source', 'target', rows_where := 'true', clean := f)<br>
><br>
> NOTICE: Performing checks, please wait .....<br>
><br>
> NOTICE: Creating Topology, Please wait...<br>
><br>
> NOTICE: -------------> TOPOLOGY CREATED FOR 20 edges<br>
><br>
> NOTICE: Rows with NULL geometry or NULL id: 0<br>
><br>
> NOTICE: Vertices table for table public.edge_table_noded is:<br>
> public.edge_table_noded_vertices_pgr<br>
><br>
> NOTICE: ----------------------------------------------<br>
><br>
> pgr_createtopology<br>
><br>
> --------------------<br>
><br>
> OK<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
><br>
><br>
> pgr_sample=# select pgr_analyzeGraph('edge_table_noded', 0.001);<br>
><br>
> NOTICE: PROCESSING:<br>
><br>
> NOTICE:<br>
> pgr_analyzeGraph('edge_table_noded',0.001,'the_geom','id','source','target','true')<br>
><br>
> NOTICE: Performing checks, please wait ...<br>
><br>
> NOTICE: Analyzing for dead ends. Please wait...<br>
><br>
> NOTICE: Analyzing for gaps. Please wait...<br>
><br>
> NOTICE: Analyzing for isolated edges. Please wait...<br>
><br>
> NOTICE: Analyzing for ring geometries. Please wait...<br>
><br>
> NOTICE: Analyzing for intersections. Please wait...<br>
><br>
> NOTICE: ANALYSIS RESULTS FOR SELECTED EDGES:<br>
><br>
> NOTICE: Isolated segments: 1<br>
><br>
> NOTICE: Dead ends: 7<br>
><br>
> NOTICE: Potential gaps found near dead ends: 1<br>
><br>
> NOTICE: Intersections detected: 0<br>
><br>
> NOTICE: Ring geometries: 0<br>
><br>
> pgr_analyzegraph<br>
><br>
> ------------------<br>
><br>
> OK<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
><br>
><br>
> pgr_sample=# SELECT a.*<br>
><br>
> pgr_sample-# FROM edge_table_noded a, edge_table_noded_vertices_pgr b,<br>
> edge_table_noded_vertices_pgr c<br>
><br>
> pgr_sample-# WHERE a.source=<a href="http://b.id" rel="noreferrer" target="_blank">b.id</a> <<a href="http://b.id" rel="noreferrer" target="_blank">http://b.id</a>> AND b.cnt=1 AND a.target=<br>
> <a href="http://c.id" rel="noreferrer" target="_blank">c.id</a> <<a href="http://c.id" rel="noreferrer" target="_blank">http://c.id</a>> AND c.cnt=1;<br>
><br>
> id | old_id | sub_id | source | target |<br>
> the_geom<br>
><br>
><br>
> ----+--------+--------+--------+--------+------------------------------------------------------------------------------------<br>
><br>
> 20 | 17 | 1 | 17 | 18 |<br>
> 010200000002000000000000000000E03F0000000000000C4068EEFFFFFFFFFF3F0000000000000C40<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
><br>
><br>
> So the original node id 17, which is a nearly touching T-intersection,<br>
> remains isolated. This is in contrast to the output shown in the manual,<br>
> which shows the following:<br>
><br>
><br>
><br>
> SELECT pgr_analyzegraph('edge_table_noded', 0.001);<br>
> NOTICE: PROCESSING:<br>
> NOTICE:<br>
> pgr_analyzeGraph('edge_table_noded',0.001,'the_geom','id','source','target','true')<br>
> NOTICE: Performing checks, pelase wait...<br>
> NOTICE: Analyzing for dead ends. Please wait...<br>
> NOTICE: Analyzing for gaps. Please wait...<br>
> NOTICE: Analyzing for isolated edges. Please wait...<br>
> NOTICE: Analyzing for ring geometries. Please wait...<br>
> NOTICE: Analyzing for intersections. Please wait...<br>
> NOTICE: ANALYSIS RESULTS FOR SELECTED EDGES:<br>
> NOTICE: Isolated segments: 0<br>
> NOTICE: Dead ends: 6<br>
> NOTICE: Potential gaps found near dead ends: 0<br>
> NOTICE: Intersections detected: 0<br>
> NOTICE: Ring geometries: 0<br>
> pgr_createtopology<br>
> --------------------<br>
> OK<br>
> (1 row)<br>
><br>
> I tried the following but none helped:<br>
><br>
> - increasing the value of tolerance up to 0.5<br>
><br>
> - setting the SRID of the geometry column<br>
><br>
> - converting data to .osm file and run osm2pgrouting<br>
><br>
><br>
><br>
> I am using the following versions on Windows 10 64-bit PC:<br>
><br>
><br>
><br>
> pgr_sample=# select version(), postgis_full_version(), pgr_version();<br>
><br>
> version |<br>
><br>
> postgis_full_version<br>
><br>
> |<br>
> pgr_version<br>
><br>
><br>
> -------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------<br>
><br>
><br>
> --------------------------------------------------------+-----------------------------------------------<br>
><br>
> PostgreSQL 9.5.2, compiled by Visual C++ build 1800, 64-bit |<br>
> POSTGIS="2.2.2 r14797" GEOS="3.5.0-CAPI-1.9.0 r4090" PROJ="Rel. 4.9.1, 04<br>
> March 2015" GDAL="GDAL 2.0.2, re<br>
><br>
> leased 2016/01/26" LIBXML="2.7.8" LIBJSON="0.12" RASTER |<br>
> (2.2.0,pgrouting-2.2.0,afc622e,master,1.59.0)<br>
><br>
> (1 row)<br>
><br>
><br>
><br>
> Thanks in advance for your help!<br>
><br>
><br>
><br>
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><br>
> Subject: Digest Footer<br>
><br>
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><br>
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><br>
> End of Pgrouting-users Digest, Vol 92, Issue 2<br>
> **********************************************<br>
><br>
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