<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Hi,<br>
<br>
A straight skeleton might be what you need:<br>
<a class="moz-txt-link-freetext" href="http://postgis.net/docs/ST_StraightSkeleton.html">http://postgis.net/docs/ST_StraightSkeleton.html</a><br>
<br>
I know there are some blog posts on this but couldn't find them
that quickly.<br>
<br>
Best, <br>
Tom<br>
<br>
On 20-5-2015 4:29, KhunSanAung wrote:<br>
</div>
<blockquote
cite="mid:CAAQr1jb6L3o1RSnHjg3sRkLvy24WheVUbQO6xnY5SwmW1NctqA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_default" style="color:#0000ff">Hello All,</div>
<div class="gmail_default" style="color:#0000ff"><br>
</div>
<div class="gmail_default" style="color:#0000ff">I'd like to
generated line from elongated polygon in PostGIS.</div>
<div class="gmail_default" style="color:#0000ff">e.g. extracting
center of a river polygon, center of the road polygon, etc.</div>
<div class="gmail_default" style="color:#0000ff"><br>
</div>
<div class="gmail_default" style="color:#0000ff">I'd to know
what would be equivalence of Polygon Thinning in PostGIS. </div>
<div class="gmail_default" style="color:#0000ff"><br>
</div>
<div class="gmail_default" style="color:#0000ff">Thank you very
much for any hints.</div>
<div class="gmail_default" style="color:#0000ff"><br>
</div>
<div class="gmail_default" style="color:#0000ff">Best regards</div>
-- <br>
<div class="gmail_signature">
<div dir="ltr"><span style="color:rgb(0,0,153)">Have a nice
day!</span><br>
--<br>
<p style="line-height:115%"><b><span
style="font-size:9.0pt;line-height:115%;color:#7f7f7f"
lang="EN-GB">Mr. Khun San Aung</span></b></p>
<u><span style="font-size:9.0pt;line-height:115%;color:blue"
lang="EN-GB"></span></u><u><span
style="font-size:9.0pt;line-height:115%;color:#7f7f7f"
lang="EN-GB"></span></u></div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
postgis-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:postgis-users@lists.osgeo.org">postgis-users@lists.osgeo.org</a>
<a class="moz-txt-link-freetext" href="http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users">http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users</a></pre>
</blockquote>
<br>
</body>
</html>