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<p class=MsoNormal><span lang=EN-GB>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>I am trying to make a query where is given
the nearest aid station (hospital / fire station – either which passed
through a parameter). Nearest being on the road network itself, thus I am using
pgRouting’s function : Shooting_star. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>My idea to tackle the problem is :<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:20.25pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-GB><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-GB>Make an expansion of the
accident of 20 KM<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:20.25pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-GB><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-GB>Check which hospital / fire
station is within that expansion<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:20.25pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-GB><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-GB>Find the shortest distance
between every hospital / fire station to the accident location<o:p></o:p></span></p>
<p class=MsoListParagraph style='margin-left:20.25pt;text-indent:-18.0pt;
mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-GB><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span lang=EN-GB>Prepare the route for the
shortest distance<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>What I am finding hard to implement is the
part where to find the shortest distance on the road network. It is taking
more or a less a minute there. Any idea how I can improve it please?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>This is my code : <a
href="http://yancho.pastebin.com/f75683d8b">http://yancho.pastebin.com/f75683d8b</a>
- The section I am worried about is : 72 – 96 (highlighted in yellow)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Any idea is extremely appreciated.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Regards<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Matthew<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>I
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Paying users do not have this message in their emails.<br>
Try <a href="http://www.spamfighter.com/len">SPAMfighter</a> for free now!<o:p></o:p></span></p>
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