Could you reply with a URL to what buffers are and how they would be used in this context? I'm totally unfamiliar.<br><br><div><span class="gmail_quote">On 9/9/07, <b class="gmail_sendername">Nico Mandery</b> <<a href="mailto:nicomandery@googlemail.com">
nicomandery@googlemail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi Rainer,<br><br>You could could use a buffer instead of bounding boxes.
<br>Just an idea<br><br>Nico<br><br>Am Sonntag 09 September 2007 schrieb <a href="mailto:postgis@jochem.name">postgis@jochem.name</a>:<br>> Hi,<br>><br>> what I want to do is finding certain features in some distance around a
<br>> certain point. Those features should be located in some corridor between X<br>> and Y km around this point. Currently I've solved this problem by<br>> computing two bounding boxes of X and Y km around the point and taking the
<br>> difference of those. So far so good.<br>><br>> But I don't want to have some quadratic box but a real circle - is there<br>> any way to achieve this?<br>><br>> Best regards,<br>> Rainer<br>
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