<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Hello,<BR><BR>I am new to postgis. My question is this: How can postgis be used to solve the nearest neighbour problem.. I have gone through the postgis geometry functions and I am yet to see functions that can be used to solve this problem. (or may be they are but I have no idea how to use them). It will be appreciated if i can get access to sample tutorials on this. <BR><BR>Thanks,<BR><BR>Smith<BR></td></tr></table><br>