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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear All,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am trying to setup and test pgrouting, I followed the setups but it is still not working. If ollowed the following steps:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Copay pgrouting libraries to ..\pgsql\8.4\lib<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Execute routing_core.sql and routing_core_wrappers.sql<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3-<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Create a newtwork:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Added source and target fields<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Execute Execute <span style='color:#333333;background:white'>assign_vertex_</span>id('<table>', float tolerance, '<geometry column', '<gid>')<o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>c.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Added indices <o:p></o:p></p><p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>d.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Added reverse_cost column.<o:p></o:p></p><p class=MsoNormal>Then I used the following query to retrieve records:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>SELECT * FROM shortest_path(‘<o:p></o:p></p><p class=MsoNormal>SELECT gid as id,<o:p></o:p></p><p class=MsoNormal>source::integer,<o:p></o:p></p><p class=MsoNormal>target::integer,<o:p></o:p></p><p class=MsoNormal>length::double precision as cost<o:p></o:p></p><p class=MsoNormal>FROM ways’,<o:p></o:p></p><p class=MsoNormal>24154,<o:p></o:p></p><p class=MsoNormal>24157,<o:p></o:p></p><p class=MsoNormal>false, false)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>the query executes without errors, but return no data. I checked the table and the records seems OK. <o:p></o:p></p><p class=MsoNormal>is there a way to validate the database and verify the topology? How to make sure that the pgrouting library (dlls) are installed and working correctly?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>