There are several dimensions in your question. Its not a OpenLayers solution only, requiring PostGIS queries and painting the points in execution time.<br><br>As Ian said, check out WPS, they the great new Web GIS deal. :P<br>
<br>Specifically you can check you Zoo WPS and 52n implementation.<br><br>George Silva<br><br><div class="gmail_quote">On Sun, Aug 1, 2010 at 4:55 PM, Ian Turton <span dir="ltr"><<a href="mailto:ijturton@gmail.com">ijturton@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On Sun, Aug 1, 2010 at 3:48 PM, George Matt <<a href="mailto:georgematt99@yahoo.co.uk">georgematt99@yahoo.co.uk</a>> wrote:<br>
> Hi,<br>
><br>
> Very strange, no one reply to the query raised by me about the online<br>
> spatial analysis, it seems no one knows. Only loading the map with panning,<br>
> zooming and some gadget is not GIS.<br>
><br>
<br>
</div>I suspect that plenty of us know how to do this but you are asking<br>
badly and in the wrong place - google Web Processing Service and read<br>
some of the top links returned.<br>
<br>
Ian<br>
<font color="#888888">--<br>
Ian Turton<br>
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</font></blockquote></div><br><br clear="all"><br>-- <br>George R. C. Silva<br><br>Desenvolvimento em GIS<br><a href="http://blog.geoprocessamento.net">http://blog.geoprocessamento.net</a><br>